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

Preamble

• The different services offered by Infomaniak are all compatible with the corresponding standard protocols (IMAP/SMTP for email, for example), therefore if you encounter a problem with third-party software, contact its publisher or a Partner and consult the support policy as well as article 11.9 of the Infomaniak TOS.

Add the email address to the application

Prerequisites

• Create the email address in my kSuite or a Mail Service / kSuite.
• Create a password for the email address for the device you are going to configure.

To configure the email application:

1. Download the latest version of Thunderbird.
2. Open the application.
3. Enter your account information and click on Continue:
   
4. Stay in IMAP and click on Continue:
   
5. Enter your password and click on Continue:
   
6. Click on Continue:
   
7. The summary of your registration appears, click on Finish to add the address (or configure other services from there):
   
8. There you go, 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 = full & complete email address ( ? )
• Password = the one generated for 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 parameters as the incoming server" or, depending on the software/email clients, enter a username (= full & complete email address) and the generated password.

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

If you encounter any issues

Check that the Mail Service is configured optimally.

There is no need to contact Infomaniak Support if your email address works well outside of the application. The most common error concerns the use of an incorrect password. The troubleshooting guides help you resolve any potential issues:

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

… and if Thunderbird no longer works since a change of email password, refer to this other guide.