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

Este fío arquivouse. Faga unha nova pregunta se precisa axuda.

How to filter based on User-Agent header

  • 2 respostas
  • 2 have this problem
  • 1 view
  • Last reply by stioudson

stioudson
stioudson
more options

I am attempting to filter MailChimp spam, which usually contains a User-Agent header of "MailChimp Mailer." I have added a filter header of "User-Agent" and a filter of "contains" "MailChimp" with the instruction to move the email to a separate folder I have set up. When I run the filter on a folder which I know contains such emails, nothing (visible) happens, and the filter log is empty. What am I doing wrong? Thunderbird 60.5.3, Windows 10

I am attempting to filter MailChimp spam, which usually contains a User-Agent header of "MailChimp Mailer." I have added a filter header of "User-Agent" and a filter of "contains" "MailChimp" with the instruction to move the email to a separate folder I have set up. When I run the filter on a folder which I know contains such emails, nothing (visible) happens, and the filter log is empty. What am I doing wrong? Thunderbird 60.5.3, Windows 10

stioudson modificouno o

Chosen solution

Before running a filter, it's often worth performing a search to confirm the syntax. Right-click a folder, Search Messages..., and add User-Agent as a Custom header, as with filters. I tried it here and found matches. Does it work for you? Try it with a simpler filter action such as star or tag.

Ler a resposta no contexto 👍 1

All Replies (2)

sfhowes
sfhowes
  • Top 10 Contributor
more options

Chosen Solution

Before running a filter, it's often worth performing a search to confirm the syntax. Right-click a folder, Search Messages..., and add User-Agent as a Custom header, as with filters. I tried it here and found matches. Does it work for you? Try it with a simpler filter action such as star or tag.

stioudson
stioudson Question owner
more options

Thank you. This answer pointed the way. Also, by using "view message source," it turns out that X-Mailer is a better header to use.