When did email become a social media look alike. What a poor design choice. Oh well, I really have no knowledge here, but a little googling lead me to https://office365itpros.com/2023/09/19/outlook-reactions-disable/ which offer a tidbit about a custom header. The x-ms-reactions: disallow message header This venerable article http://kb.mozillazine.org/Custom_headers provides instructions that allow using the config editor a add a custom header to all outgoing email. So you can simply add the header item to prevent reactions in reply.

Probably not what is needed here. Although there are ways to include it in your outgoing mail to force it off in your mail, but there may be other headers that can be filtered on to get them out of the way.

What does a typical reaction have in the header of the message (ctrl+U) opens the message source

Thank you for the response. Unfortunately, most of the reactions I get are because of email lists I'm on. Reactions are bad enough --- non-standard Microsoft cruft --- but Outlook sends them to email lists as if the sender used "reply-all". Yuck. And I don't see a header for this; I think I'd have to do a regex for the body of the message.

Can you send me a "forward as attachment" of one of the replies. There must be something. Include a link to this topic.

Matt_au at GMX.com