This guide explains how to connect the desktop app Thunderbird (desktop application on macOS / Windows / Linux) to an email address hosted by Infomaniak.

Add the email address to the application

Prerequisites

• Create the email address (❓: my kSuite | Mail Service/kSuite).
• Create a device password (❓: my kSuite | Mail/kSuite Service).
• Verify that the domain is configured correctly (❓: Mail/kSuite Service).

To configure the email application:

1. Download the latest version of Thunderbird.
2. Open the application.
3. Enter your account information and click Continue:
   
4. Keep IMAP selected and click Continue:
   
5. Enter your password and click Continue:
   
6. Click on Continue:
   
7. Your registration summary is displayed. Click on Finish to add the address (or configure other services from there):
   
8. Your email address is now configured in the application:
   

Recommended settings

• Incoming IMAP server = mail.infomaniak.com
• IMAP port = 993 (with SSL)
• Outgoing SMTP server = mail.infomaniak.com
• SMTP port & encryption protocol and command/method to activate this protocol: 587 + STARTTLS
• Username = the complete email address (need help?)
• Password = the password generated for the email address you want to access (❓: my kSuite | Mail/kSuite Service).
• Mandatory authentication for sending emails:
  • Enable this in the SMTP settings of your application.
  • Check "use the same settings as the incoming server" or, depending on the software/email client, re-enter a username (= complete email address) and the generated password.

Refer to this other guide if you are looking for information about other compatible email ports and protocols (SSL / TLS for example).

In case of a problem

Check that the Mail service is configured optimally.

You do not need to contact Infomaniak Support if your email address works correctly outside the application. The most common error involves using an incorrect password. The troubleshooting guides will help you resolve any potential issues:

• Refer to the solutions provided in this other guide regarding email in general.
• This other guide is specifically about Thunderbird.

… and if Thunderbird is no longer working after a change of your email password, please refer to this other guide.