View and forward the headers of an email

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

Introduction

• An email is composed of a header (header) and the actual content of the message (body)
• Most email software/clients do not directly show the headers, but viewing or forwarding them allows Infomaniak support to identify issues
• Email headers provide various information such as:
  • The sender
  • The recipient
  • The date
  • The subject
  • The servers involved during transmission between the sender and the recipient
    
    
     

View Headers

From Mail Infomaniak

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

1. Log in to Mail Infomaniak (mail.infomaniak.com) from a web browser like Brave or Firefox
2. Open the relevant message and click on the action menu ⋮ on the right
3. From the menu that appears, select View headers
   

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

Forward Email Headers

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 using the method above
• Forward the email message

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

A third method of transmission is explained in this guide.