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Infomaniak support is also at your disposal by email, chat or phone if needed.

This guide details the limits of your email regarding size (message weight and disk space) set within the framework of Infomaniak's email offers and guides you on how to check the storage used.

Email box size limit

• The total volume of your emails is unlimited, whether in terms of the number of messages or the storage space they occupy.
• Only the my kSuite offer cannot exceed 20 Go of storage.

Limit on the size of each email

• The maximum size of an email for sending and receiving is 210763776 bytes, or 201 MB exactly.
  • This includes header and body (text, html, attachments, etc.) regardless of the means used for sending.
  • Note that an attachment can be encoded in base64, so its size in the email is not necessarily identical to its size on disk.
• With the Infomaniak Web app Mail (online service mail.infomaniak.com) the size limit for attachments is 25 Mo.
  • Beyond this and up to a limit of 3 Go, a link is generated and integrated into your message: the data is stored in Switzerland in the Infomaniak Cloud and your recipients will be able to use this link to easily download the attachments during a predefined period.
  • Beyond 3 Go (and up to 50 Go), it is recommended to use SwissTransfer directly for your sends.

Message retention period limit

• There is no time limit for message retention in the inbox or in subfolders, except for an email that would be deleted, marked as spam, or manually/automatically moved to the "Trash" or "Spam" folder (or any equivalent name such as "Deleted Items", "Deleted Messages", "Junk Mail", including spellings in another language, "Junk" for example - non-exhaustive list)… In this case, the email is automatically deleted after 30 days without possibility of recovery.

• Backups performed by Infomaniak have a retention period.
• It is not recommended to keep more than 4,000 to 5,000 messages per folder (slows down message indexing). It is therefore advisable to move your messages into subfolders, which also facilitates their consultation. You can do this manually or set up automatic sorting rules.

Display the total size from the Infomaniak Web Mail app

To do this:

1. Click here to access the Web Mail app (online service mail.infomaniak.com).
2. Check or select the relevant email address from the dropdown menu in the left sidebar.
3. Click on the action menu ⋮ to the right of the relevant item in the displayed table.
4. Click on Email Settings:
   
5. Click on Refresh in the Storage box to display the size of the mailbox:
   

Other email limits

• Limits on the number of recipients per email sent
• Outgoing email limits per 24 hours

What if there is still a problem?

In the case where your recipient's email address is not hosted by Infomaniak, you may receive an error message at the time of sending the email. This can take various forms, such as for example Recipient address rejected : 5.2.2 Over quota 554 5.0.0 Service unavailable.

This may indicate that your recipient's mailbox is full and they can no longer receive emails, or that the email you are trying to send is too large.

This guide details the various identifiers that you will need to use with Infomaniak, as well as what happens if one of the passwords is changed.

Preamble

1. Like many other online services, you signed up with Infomaniak using a personal email address.
2. This personal email address serves as your login identifier when you want to access Infomaniak services.
3. This login identifier has its own password (set when you created your Infomaniak user account – your personal email address, see above).

There is no link between…

• … this identifier/password pair described in points 1/2/3 above…
• … and the email addresses that you have created or obtained subsequently with Infomaniak.

A link could exist if the address is identical (for example, you signed up with the email address toto@abc.xyz and you also manage this same email address with Infomaniak) but even in this case, the password will very likely be different — once for the login identifier toto@abc.xyz and once for the email address toto@abc.xyz.

Login ID / email address

Enter the login identifier when…

• Whether it be on mail.infomaniak.com or in the Infomaniak Mail application, it is essential to log in with:
  • the identifier of your Infomaniak user account,
  • and its password.
• ⚠️ This will NOT work if you enter an email address and its password directly (unless a user account exists with exactly the same address and password).

Enter an email address when…

• In an email software or client (like Microsoft Outlook, Apple Mail, etc.), you must enter:
  • the email address you wish to view,
  • and the associated password.
• ⚠️ This will NOT work if you use the password for the Infomaniak interface, as it is very likely different!

Solving a connection issue

There is no need to contact Infomaniak Support (which does not have any of your passwords) if…

1. … you are unable to log in to interfaces such as mail.infomaniak.com or manager.infomaniak.com due to an incorrect password…
   1. The only solution is the password reset.
2. … you are unable to connect your email address to your email software or client (such as Microsoft Outlook, Apple Mail, etc.) due to an incorrect password:
   1. Test the email address / password pair to check if an error is detected.
   2. Reset the email password if necessary.

To remember

In summary, you have:

• 1 identifier (in the form of an email address) and 1 password to access:
  • … to Mail https://mail.infomaniak.com
  • … to the Manager https://manager.infomaniak.com
• 1 password for each email address hosted at Infomaniak.

These two pieces of information can be the same or different, depending on your choice. And if you change one, it will not necessarily change the other, unless both have been unified (this will be indicated to you – see below).

When are passwords unified?

Let's say that within the Mail Service that you own in your Infomaniak account, you create an email address named julie@entreprise-familiale.xyz (password 123-Abc).

If then an Infomaniak account…

• ... is created with the same address (julie@entreprise-familiale.xyz – password does not matter)…
• … is the only account to access the email address julie@entreprise-familiale.xyz via mail.infomaniak.com…
• … has the necessary permissions to change the password for this email address…

… then the password unification will be offered when you attempt to change the password of this email address from the relevant Infomaniak account.

And what about the other credentials?

Purchasing other Infomaniak products requires obtaining other credentials, such as those needed for FTP, MySQL, SSH, WebDAV, etc., but these credentials are entirely independent of the two types described above.

This guide details the accepted and valid characters when you need to create an email address (up to 64 characters) within an Mail Service Infomaniak.

Preamble

• Some characters may be forbidden or allowed, but they are not the same characters depending on whether they are before or after the @ sign, as in nom-utilisateur.mail@nom-domaine.xyz for example.
  • To understand the possibilities offered at the domain name level itself (distinct part "nom-domaine.xyz" that comes after the at sign @), refer to this other guide.

user-name.mail @ domain-name.xyz

In the part representing the user's email address (the distinct "nom-utilisateur.mail" part that comes before the at sign @) providers like Infomaniak may limit the use of certain characters when creating email addresses, even though they are allowed by the RFC (Request for Comments) #5321 and #5322, among others.

Here is what can be used or not in the part preceding the @ in an email address:

This guide explains how to create an email address from the Service Mail Infomaniak, the powerful and secure solution for hosting your email addresses.

Preamble

• To create multiple email addresses in bulk, refer to this other guide.
• To create "virtual" addresses used for redirection, refer to this other guide.
• Refer to this other guide if you are looking for additional information regarding invitations to use a new address (point b below) or an existing address.

Create an email address

Prerequisites

• Have a Service Mail on your Manager Infomaniak.
• Have a quota of available addresses or adjust it in advance if necessary.

Then, to add the email address of your choice:

1. Click here to access the management of your product on the Infomaniak Manager (need help?).
2. Click directly on the name assigned to the relevant product.
3. Click the blue button Create an email address at the top right:
   
4. Enter the desired email address (only what comes before the at sign e.g. your first name — the domain name is already specified and any aliases are visible by hovering over the information icon ⓘ)…
5. Click on the Continue button.

Then…

… depending on the intended use, select the user concerned by the creation of the address...

a. ... yourself (simple and quick)

In this case, the assistant will ask you to choose a secure password.

Then the email address is…

1. … created…
2. … automatically added to the Web app Mail Infomaniak of the currently logged-in user…
3. … and available immediately to work in any software / email application.

Note that any subsequent password change will cut access to the address everywhere (+ prompt to enter the new password) except on the original Mail app, i.e., the one from the account used to create the address on the Mail Service (point 2 above).

b. ... one or more other users

In this case, click on the displayed text field and… 

• … select 1 or more existing users already in the same Organization, including yourself if you wish:
  
  • If necessary, specify the user permissions (automatically retrieved from the global configuration) including whether or not they can change the password later:
    
  • You can modify the user permissions at any time from your Mail Service.
  • You will then need to select a signature template and click Continue.
  • That's it, a randomly generated password will be displayed on your screen.

• … or select the email address that you are currently creating (but later, you will need to access it in some way to get the invitation)
• … or enter the email address that the user already has (for personal use, for example):
  
  • In these 2 cases, you must choose, under Advanced Options, the way in which the user will connect to their future new user account:
    • either a connection with an identifier that will be exactly corresponding to the email address created
    • or a connection with the identifier of their choice (a personal email address, for example)
  • If necessary, specify the user permissions (automatically retrieved from the global configuration) including whether or not they can change the password later:
    
  • You can modify the user permissions at any time from your Mail Service.
  • You will then need to select a signature template and then click Continue.
  • That's it, a randomly generated password will appear on your screen unless you have invited a user to their personal address by forcing them to connect with the created address.

c. ... "I DON'T KNOW"

The steps will be exactly the same as in point a. above, except for point 2 (no automatic addition to Mail Infomaniak).

Additional actions (button ‍)

Click on the chevron ‍ to the right of the Create an email address button to access additional actions:

1. Create a generic email address of type:
   1. no-reply (for sending confirmations, validations, invoices, etc.)
   2. catchall (allows you to receive all messages for which there is no specific email address on your domain)
2. Create multiple email addresses: allows you to create multiple email addresses at once using a CSV file.
3. Create “virtual” addresses used for redirection.
4. Import the content of other email addresses.

Delete one or more email addresses

To delete an email address (its content will be destroyed):

1. Click here to access the management of your product on the Infomaniak Manager (need help?).
2. Click directly on the name assigned to the relevant product.

Once you are in front of the email addresses table:

A. Delete one address at a time

1. Click on the action menu ⋮ located to the right of the relevant item.
2. Select the deletion of the email address.

B. Delete multiple addresses at once

1. Select the addresses to delete by checking the boxes to the left of the line.
2. Click on Delete at the bottom of the screen.

This guide helps you identify and correct errors encountered when attempting to use your email software/client such as Microsoft Outlook, Mozilla Thunderbird, Apple Mail, etc.

Always use…

• the single server name: mail.infomaniak.com (for IMAP reception and SMTP sending servers)
• the correct incoming/outgoing port numbers
• Authentication in the settings when it is offered, and if necessary, enter the username (your full email address) and password in the fields related to mandatory authentication
• the correct email password which is usually different from the username used to log in to Infomaniak (click here to check that you are using the correct password and if necessary, change the password of your email address) - beware of the sign $
• an existing email address that must have been actually created (or set as an alias)
• one protocol at a time (never check an email box with devices configured in POP3 for some and in IMAP for others because these two protocols do not work well together)

You must try to...

• compare the recommended settings for the email software/client used, especially if you have recently changed the password on the Infomaniak side
• check your emails using a different network (WiFi, mobile hotspot from 4G/5G, or any other internet connection)
• temporarily disable your security applications (antivirus, firewall, VPN...); if you can then retrieve your emails normally, contact the publisher of the security application(s) you are using
• type your password in plain text in a word processor; depending on your keyboard configuration, the key A may correspond to the letter Z and the key Q may refer to the letter A...
• Restart and try sending/receiving again: some applications require validating the configuration parameters window several times or need to be restarted to apply their new settings
• compose a new message after modifying your settings: a message in the process of being drafted that would be saved in the Drafts folder may not take into account any configuration changes

The types of errors

• 0x800... - refer to this other guide
• Certificate error (SSL or other): refer to this other guide
• 550 5.7.1 relaying denied or Proper authentication required - refer to this other guide
• 535 5.7.0 authentication failed - refer to this other guide

also:

• "573 Antispam: Authentication not possible. Please use port 587 instead of port 25."
  or "An operation on the server timed out. The server may be down, overloaded, or there may be too much net traffic."
  or "The time limit has expired" with an error number following (421, or 573 for example).
  Most ISPs (Internet Service Providers) have blocked the SMTP sending port n°25 for many years now. Therefore you should never specify port 25 as the SMTP port. To still be able to send emails, use the recommended ports.

This guide explains which protocols and ports can be used with Infomaniak's email services (Service Mail in particular).

Mandatory ports and parameters

When this is requested during a software or email application configuration, use only these parameters:

If you specify other indications, email errors may occur.

Other supported but not recommended protocols

• port 143 (standard port for receiving messages via IMAP)
• port 110 (standard port for receiving messages via POP3)‍
• port 995 (secure port for receiving messages via POP3s)
• port 587 (alternative port not recommended for sending messages via SMTP)
• TLS authentication on SMTP ports 587 and 25
• STARTTLS authentication for IMAP, POP3 and SMTP
• SMTP authentication (either LOGIN or PLAIN)

The Infomaniak API does not offer any email connection as IMAP and SMTP are the "APIs"; to this end, use a Python library such as https://docs.python.org/3/library/email.examples.html and https://docs.python.org/3/library/imaplib.html or any library using IMAP and SMTP.

To display emails from php:
imap_open("{mail.infomaniak.com:993/imap/ssl}", $email, $password);

The MTA-STS mechanism is not implemented or verified, Infomaniak using instead DANE which guarantees an encrypted connection under these conditions:

• The client sends an e-mail to a domain that has DANE.
• The client receives an email from an SMTP server that uses DANE.
• In all other cases, it will be a random connection that does not guarantee 100% that the connection will be encrypted.

This guide helps you identify and correct most email errors encountered after sending an email to a recipient. Refer to this other guide if you are looking for information about errors obtained when configuring an email address in a software/email client.

Introduction

• Generally, a mail error message is the result of…
  • … an incorrect configuration of the domain name used with your email,
  • … an issue with your recipient's (mail provider).
• In any case, a delivery failure report (Mailer Daemon or Mail Delivery Subsystem) containing the explanation is sent to the sender.

Searching for and identifying the email error

When your message does not reach your recipient, an initial failure report (Temporary Delivery Failure Report) is sent and specifies that the server will attempt to resend your message several times.

A final delivery failure report (Final Delivery Failure Report or Undeliverable Mail) issued by the recipient's server is sent to the sender (via a passage through the Infomaniak mail server, hence the mention of Infomaniak at the beginning of most error messages you may receive) to inform them that the email could not be delivered even after several attempts.

The notification always contains the reason for the failure. Example below:

This is the mail system at host smtp-1-1234.mail.infomaniak.ch.
I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can delete your own text from the attached returned message.
The mail system anna.a@abc.xyz: host mxbw-abc-xyz.abc-ab12.abc.ch[123.456.789.00] said: 550 5.1.1
anna.a@abc.xyz recipient rejected, account administratively disabled (in reply to RCPT TO command) 

So here the address of your recipient is visibly suspended by their email provider (account administratively disabled).

Sometimes you need to look for the reason for the error message received among its attachments (often a raw text file). Example:

Reporting-MTA: dns; mxbw.abc.ch‍ [123.456.789.00]
Received-From-MTA: dns; smtp-1-1234.mail.infomaniak.ch [12.345.678.99]
Arrival-Date: Tue, 01 Aug 2023 15:49:22 +0200
Final-recipient: rfc822; anna.a@abc.xyz
Diagnostic-Code: smtp; 552 RCPT TO:anna.a@abc.xyz‍ Mailbox disk quota exceeded
Last-attempt-Date: Tue, 01 Aug 2023 15:49:22 +0200

Here the mailbox of your correspondent external to Infomaniak seems to be full (Mailbox disk quota exceeded).

Most common cases

SPF Failure

The SPF (Sender Policy Framework) record is not correctly configured:

Subject: Delivery Status Notification (Failure)
From: Mail Delivery System mailer-daemon@domain.xyz
To: Anna.A anna.a@abc.xyz
This is an automatically generated Delivery Status Notification.
Delivery to the following recipient failed due to SPF failure:
anna.a@abc.xyz
Technical details of SPF failure:
The sender's domain domain.xyz does not have a valid SPF record. Please contact your email administrator to correct the SPF configuration.

Solution: check the configuration of your domain name and especially the SPF record if your website is hosted with Wix or another provider.

User Unknown

The email address specified in the message is invalid or does not exist:

Subject: Delivery Status Notification (Failure)
From: Mail Delivery System mailer-daemon@domain.xyz
To: Anna.A anna.a@abc.xyz
This is an automatically generated Delivery Status Notification.
Delivery to the following recipient failed permanently:
anna.a@abc.xyz
Technical details of permanent failure:
The email address does not exist. Please check the recipient's email address and try again.

Solution: carefully check the recipient's email address and correct it if necessary; ensure that you are using a valid email address for the recipient.

Temporary Failure

Le serveur de messagerie du destinataire rencontre des problèmes temporaires ou est indisponible.

Solution: wait for some time, then try sending the message again later. If the problem persists, contact the recipient's technical support for help.

Blocked by SPAM Filter (or Content Rejected)

The recipient's mail server has blocked the message due to anti-spam filtering rules:

Subject: Delivery Status Notification (Failure)
From: Mail Delivery System mailer-daemon@domain.xyz
To: Anna.A anna.a@domain.xyz
This is an automatically generated Delivery Status Notification.
Delivery to the following recipient failed due to the message being rejected as spam:
anna.a@domain.xyz
Technical details of delivery failure:
The content of the message triggered the spam filters of the recipient's email server. Please review the message content and try again.

Solution: check if your message contains elements that may be considered spam (keywords, suspicious links, etc.). Contact the recipient to check if the message has been filtered into the junk mail folder.

Refer to this other guide regarding outgoing spam and this other guide regarding incoming spam.

Bad Reputation

The recipient's mail server has blocked the message due to anti-spam filtering rules:

gmail-smtp-in.l.google.com said: 550-5.7.1
Our system has detected that this message is likely suspicious due to the very low reputation of the sending domain.
To best protect our users from spam, the message has been blocked.
Please visit https://support.google.com/mail/answer/188131 for more information.

Solution: check the reputation of the domain, determine if one of your email addresses has been recently and involuntarily exploited for malicious purposes, for example.

Domain Not Found (or DNS Error)

Le nom de domaine du destinataire n'a pas pu être résolu ou n'existe pas.

Solution: check the spelling of the recipient's domain and correct it if necessary; ensure that the domain name and DNS are valid and active.

Mailbox Full

La boîte de réception du destinataire est pleine, empêchant la réception de nouveaux messages.

Solution: inform the recipient of the situation and ask them to free up space by deleting emails or archiving items.

This cannot happen with email addresses managed by Infomaniak since they have no storage size limit.

Part of their network is on our block list

If the error message (usually obtained after sending from an online tool, placed on the server where your website is hosted, for example a order confirmation from Prestashop or another online store that you manage) contains this:

host hotmail-com.olc.protection.outlook.com[104.47.30.97] said: 550 5.7.1
Unfortunately, messages from [89.123.456.789] weren't sent. Please contact your Internet service provider since part of their network is on our block list.

Solution: change the email sending method. The sending is unauthenticated and is sent from the server with a specific IP address that is apparently blocked by the recipient for some reason (Infomaniak does not intervene to request unblocking). Therefore, you need to configure the online tool to perform authenticated sendings.

Less frequent errors

Deferred - Delayed

The error message Deferred - Delayed - Warning: message still undelivered after 4 hours, Will keep trying until message is 3 days old means that the Infomaniak mail server tried to connect to your contact's mail server to send the message but was unable to do so for an undetermined reason. This error message specifies that the Infomaniak server will continue to attempt to send your message for the period specified in the error message. If, after this delay, the message has still not been delivered, you will receive a final error message informing you that your message could not be delivered and that your contact did not receive it.

Greylisting Delay

This error Greylisting Delay occurs when the recipient's mail server, like Infomaniak, uses a technique called "greylisting" that imposes a temporary delay on the first delivery attempt of a message from an unknown sender. The Mailer Daemon may possibly send an error report indicating that delivery has been delayed due to greylisting. The error may also mention banned sender. You should try resending your message a few minutes/hours later.

Malware message rejected

This error Malware message rejected occurs when the message contains an attachment, a link to a storage site like Dropbox, or dynamic content, including in the "forwarded" part of the message (in the case of a "forward" message, for example). You should try resending the message from the Web app Mail Infomaniak (online service mail.infomaniak.com) instead of a mail application, and remove any content that may cause this error.

Message Size Exceeded / File Too Large

These errors Message Size Exceeded / File Too Large occur when the size of the message (or attachments) exceeds the limit allowed by the recipient's mail server. The Mailer Daemon will return an error report indicating that delivery failed due to the message size being exceeded.

Rate Limit Exceeded

This error Rate Limit Exceeded occurs when the sender exceeds the allowed frequency or volume limit set by the recipient's mail server. Mail servers may impose these limits to prevent spam or system overload.

Sender denied: auth guards failed

Refer to this other guide if you encounter an error Sender denied: auth guards failed.

The message contains a Unicode character in a disallowed header

This error The message contains a unicode character in a disallowed header may appear if you have inserted a special character like a heart ♥ e.g. in the body of the email, the subject or especially in the full name; the risk of being rejected by providers is very high: it is best to keep the use of signs, characters and fonts as simple as possible.

This guide explains how to access your **emails** hosted by Infomaniak from your devices.

Refer to this other guide if you are looking for information on synchronizing your contacts & calendars.

Quickly access your email

• Use directly the webmail in a web browser thanks to the web app Mail Infomaniak (online service mail.infomaniak.com)…
• Download the mobile app Infomaniak Mail (application for iOS/Android smartphone or tablet)…

Synchronize your emails across all your devices

• Click here to open the Infomaniak assistant to configure the synchronization of your devices (macOS, Windows, Linux, Android, iOS) and common email software/clients (Outlook, Microsoft 365, Thunderbird, Apple Mail, eM Client, etc.).

Specific guides

OS	Application to synchronize
	Outlook New / Microsoft 365 MSO / 2019 ( Windows)
	Outlook Microsoft 365 MSO ( macOS)
	Apple Mail (configuration profile macOS)
	Apple Mail (configuration profile iOS: iPhone, iPad, etc.)
	Mail ( Android: Huawei, Samsung, Sony, etc.)
+	Outlook ( iOS + Android)
++	Gmail ( iOS + Android + web browser)
++	Mozilla Thunderbird

Recommended settings

• Incoming IMAP server = mail.infomaniak.com
• IMAP port = 993 (with SSL)
• Outgoing SMTP server = mail.infomaniak.com
• Port SMTP = 465 (with SSL)
• Username = the full & complete email address ( ? )
• Password = the one assigned to the email address you want to access ( ? )
• Authentication required for sending emails:
  • It is activated in the SMTP settings of your application.
  • Check "use the same settings as the incoming server" or, depending on the software/email client, enter a username (= full & complete email address) and its password.

Refer to this other guide if you are looking for information about other compatible messaging ports and protocols.

In case of trouble

• POP3 protocolnot recommended‍ (POP server = mail.infomaniak.com and POP port = 995 with SSL).
• Refer to this other guide if you encounter errors, to check the essential points!

Change an email password

You can change the password of an email address:

• from the Manager under Service Mail
• from the Infomaniak Web Mail app (online service mail.infomaniak.com) directly

Apply the new email password

You will then need to update your applications & devices on which the email address (whose password has been changed) was installed and connected. Familiarize yourself with these specific guides:

• Apple Mail (macOS / iOS)
• Android Mail / Gmail (different versions)
• Microsoft Outlook (different versions)
• Windows Mail / Mail
• Mozilla Thunderbird

You do not yet manage your emails with Infomaniak?

This guide explains how to create an alias, that is, a variant of your usual email address without having to add a new address to your existing Mail Service.

Preamble

• The number of aliases per email address is limited to 50.
• To modify what comes after the at sign @, use alias domains.
• An alternative feature is presented here.

How an alias works

It is possible to create alternative versions of your email addresses by modifying what comes before the at sign @.

For example:

• john-peter.smith@domain.xyz is a long email address…

It can be shortened and used as follows:

• jps@domain.xyz

In this example, you must therefore create an alias "jps" on the address "john-peter.smith".

Then if someone writes to jps@domain.xyz, their message will arrive in the inbox of the main address (john-peter.smith@domain.xyz).

If someone sends an email to john-peter.smith@domain.xyz AND jps@domain.xyz in copy (CC), their message will arrive twice in the inbox of the main address (john-peter.smith@domain.xyz).

Add an alias from the Infomaniak Web Mail app

Prerequisites

• Have permission to manage aliases: if you had been invited to the Web Mail Infomaniak app (online service mail.infomaniak.com) to manage your address, it is possible that the Service Mail manager has revoked this right from their admin account.

Next, to add an alias:

1. Click here to access the Web Mail Infomaniak app (online service mail.infomaniak.com).
2. Click on the Settings icon ‍‍ at the top right.
3. Check or select the email address in question from the dropdown menu on the left sidebar.
4. Click on Alias 
   
5. Click on Add an alias to create a variant of your email address
6. Click on Add

Add an alias from the Mail Service

To access the Mail Service:

1. Click here to access the management of your product on the Infomaniak Manager (need help?).
2. Click directly on the name assigned to the relevant product.
3. Click on the email address concerned in the table that appears.
4. Click on the Redirection and Alias tab or from the left side menu on Redirection and Alias.
5. Click on the blue button Add an alias:
   
6. Enter the desired alias (what comes before the at sign @).
7. Click on Validate to save the changes.