Mail from a single source in Gmail gets trashed

I put a filter in gmail not to spam it but there is no filter not to trash it. This only happens to mail from one address and I have no idea how to fix it. This seems to be independent of SpamSieve, but SpamSieve seems to solve everything else!

If I drag it to the inbox or the archive box it eventually gets sent back to trash. The address is avoidablecontact@substack.com. Other mail from substack comes thru fine. Is there something I can do in gmail to prevent this?

I don’t think Gmail normally trashes any messages on its own, only if you had created filters to do that. Have you checked Apple Mail’s settings to make sure it has no rules that trash messages? It could also be caused by rules from a mail client on another Mac or PC.

Odd. This is the only Apple rule I have on any machine.

Are you able to see in Gmail which other clients/devices have accessed your account?

Once it gets to me it is only on my machine.

I mean on the Gmail site it should be able to show what’s accessing your account. If the only thing listed there is Apple Mail on your Mac, which doesn’t have any problematic rules, then I guess the issue is with Gmail itself.

I can’t find that. I don’t even know where to look! I posted a question to the community. Maybe somebody knows what’s going on.

At the very bottom of your Gmail inbox, there should be something that looks like this:

Screenshot 2026-06-26 at 4.12.29 PM

and you can click Details to see more.

This is getting weirder. I got this reply from the Gmail community:

…after a while it will go back to trash.

That’s an important clue because Gmail can’t move messages around like that. That means it’s being done by something you have connected to your account.

It’s probably a filter or blocking you have setup in Apple Mail.

Thanks. I checked it and it appears my IP is the only one accessing mail.

Does SpamSieve’s Log window say that it did anything with those messages?

I messed with it too many tines to tell. It looks like it predicted it was good but I kept trying to train it as good, so I don’t know. I should get another mail next week and I’ll try to check the log before doing anything.

OK. If it predicted it good, that implies that something after both Gmail and SpamSieve is what moved it to Trash.