Show and transmit email headers

This guide explains how to display and transmit email headers.

Preamble

• An e-mail is composed of a header (header) and the actual content of the message (body, body of the text).
• Most email software/clients do not show the headers directly, but display or transmit them then allows Infomaniak support to identify the problems encountered.
• The headers of an e-mail provide different information such as:
  • the sender
  • the recipient
  • date
  • the object
  • the servers involved in the transmission between the sender and the recipient
    
    
     

Show headers...

... on Mail Infomaniak

To display the headers of an e-mail from the Mail Infomaniak interface:

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

To view headers if you are using an external email application, read this other guide.

Forward the headers of an e-mail

To transmit the headers of an e-mail, in response to a request from the support or to the recipient of your choice, either...

• ... copy and paste the displayed headers according to the above method.
• ...transfer the e-mail message.

However, in order for the headers to be present, it is essential to transfer the message not to the body of the message but to as an attachment Only. The attached e-mail will in principle be in the format .eml and this file contains all the necessary headers.

A third method of complete e-mail transmission is explained in this other guide.