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Manage external email warning

Update 07/07/2026

This guide explains what the "External" label means in the web app Mail (online service ksuite.infomaniak.com/mail) and the mobile app Infomaniak Mail (application for iOS/Android smartphones or tablets) when reading certain messages:

 

Introduction

  • The "External" label is displayed in the following cases:
    • The sender's domain name (or alias) does not match the email address configured in Mail.
    • The sender is not in your contacts (including suggested contacts).
    • The email comes from an address hosted outside the Organization.
  • With certain free offers, such as my kSuite, the label will appear as "unknown" instead of “external”.

 

Enable or disable the label

You can enable or disable the label; the effect is immediate for incoming emails and when replying to an external email. To do this:

  1. Click here to access the management of your Mail Service in the Infomaniak Manager (need help?).
  2. Click directly on the name assigned to the Mail Service in question:
  3. Click on Global Settings in the left-hand menu:
  4. Click on the Security tab.
  5. Activate or deactivate the toggle switch:

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