We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Natao arisiva ity resaka mitohy ity. Mametraha fanontaniana azafady raha mila fanampiana.

Can you add a header to an email in Thunderbird?

  • 1 valiny
  • 1 manana an'ity olana ity
  • 1 view
  • Valiny farany nomen'i sfhowes

martin.h.klein
martin.h.klein
more options

I'm using a mailing service that requires me to add an additional header to an email: Header - X-PM-MESSAGE-STREAM: {stream-id}

Is it possible to do this in Thunderbird and if so, how?

I'm using a mailing service that requires me to add an additional header to an email: Header - X-PM-MESSAGE-STREAM: {stream-id} Is it possible to do this in Thunderbird and if so, how?

All Replies (2)

martin.h.klein
martin.h.klein Tompon'ny fanontaniana
more options

Found the answer, yes you can :) See: https://www.lifewire.com/arbitrary-custom-heading-email-thunderbird-1173089

Novain'i martin.h.klein t@

sfhowes
sfhowes
  • Top 10 Contributor
more options

https://www.lifewire.com/arbitrary-custom-heading-email-thunderbird-1173089

In TB 78, Config. editor is under Options/General/Indexing.