This guide explains how to display and forward the headers of an email.

Preamble

• An email consists of a header (header) and the actual content of the message (body, body text).
• Most email software/clients do not directly display the headers, but showing or forwarding them allows Infomaniak support to identify the issues encountered.
• The headers of an email provide various information such as:
  • the sender
  • the recipient
  • the date
  • the subject
  • The servers involved in the transmission between the sender and the recipient
    
    
     

Display the headers…

... on Mail Infomaniak

To display the headers of an email from the Mail Infomaniak interface:

1. Click here to access the Mail Infomaniak web app (online service mail.infomaniak.com).
2. Open the relevant message and click on the action menu ⋮ on the right.
3. From the menu that appears, select View headers:
   

To display the headers if you are using an external mail application, refer to this other guide.

Forward the headers of an email

To forward the headers of an email, in response to a support request or to the recipient of your choice, either…

• … copy-paste the headers displayed according to the method above.
• … forward the email.

However, for the headers to be present, it is essential to forward the message not in the body of the message but as an attachment only. The email attachment will be in principle in the .eml format and this file contains all the necessary headers.

A third method for complete email transmission is explained in this other guide.