This guide explains how to connect the Thunderbird desktop app (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 within my kSuite or a Mail Service / kSuite.
• Create a password for the email address for the device you will be configuring.
• Verify that the Mail Service is configured optimally.

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. Make sure you stay on IMAP and click Continue:
   
5. Enter your password and click Continue:
   
6. Click Continue:
   
7. Your registration summary is displayed; click Finish to add the address (or configure other services from there):
   
8. That's it, 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 enable this protocol: 587 + STARTTLS
• Username = the complete email address & entire address (need help?)
• Password = the one generated for the email address you want to access
• Authentication is 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 (= 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).

If you encounter a problem

Check that the Mail Service is configured optimally.

There is no need to contact Infomaniak Support if your email address works correctly outside the application. The most common error concerns the use of 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 email password, refer to this other guide.