Mail Assure Help

How can I View Email Headers in Different Email Applications?

An email header provides technical details about an email message which allow you to troubleshoot delivery problems. Information contained in the email header includes who sent the message, the software used to compose it and the email servers that it passed through on its way to the recipient. The following describes how to find email headers in various email clients.


Juno Version 4+

Select Options > Email Options (Ctrl-E). Under Show Message Headers, select the full option and click OK to save the setting. Juno version 4+ can display MIME and HTML email, but does not provide a way of Viewing the HTML Source for the message within Juno. To get the full source, including HTML codes: In the Juno mail client, click File > Save Message as Text File (Ctrl-T).

Lotus Notes / IBM Notes

Microsoft Outlook for Office 365, Outlook 2019, Outlook 2016, Outlook 2013, Outlook 2010, Outlook 2007

Microsoft Live Mail / Hotmail

Go to Options > Preferences. Scroll down to Headers and click on Advanced Headers.

Mozilla Thunderbird

Open the message. Select View > Headers and select All.


Select File > Preferences, and check the Show Article Headers box.

Opera Mail

Select Options and enable Show Message Headers in Body of Message.