To cope with the weirdness of Microsoft Outlook, and the strange ways it behaves when it gets mail with From and Sender addresses, the Reply-To address is always set to be the same as the From address.No matter what the From address is, the mail is always actually sent from the server, using the login details for the account.The Sender address is always set to to avoid spam filters.When I reply to a message in Thunderbird, the From address is set to be the same as the To address, even if that address is a different domain.

I am redirecting my e-mail to a different address: (my own domain). (Gmail would also add a Sender address of my actual Gmail address, so that the messages would not get caught by spam filters.)

And, in Gmail, if I replied to that mail, or if I wrote a new message, the From address would be faked to that address. Mail sent to the address would be redirected to my Gmail address. Previously, I had this set up with Gmail. I want to use it for incoming and outgoing mail. In other words, all messages sent to that address will simply be redirected to an address I choose. I have an e-mail address from a provider which does not provide me with an inbox, only redirection.

Thunderbird email address