emails are forwarding to another email address and I can't turn this off
I have several emails set up on my desktop Thunderbird app (Yahoo, Gmail, Fastmail). For some reason all emails that I receive in Yahoo are also showing up in the Fastmail account. I do not have this set up at Yahoo (I have the standard account that does not allow automatic forwarding) so I believe it is happening in Thunderbird. How do I turn this off? Thanks.
Opaite Mbohovái (1)
There might be a possibility that these are being pulled by the Fastmail account. Thunderbird does not forward emails on its own. You might check to see if you have any filters doing this.