I'm presently using Thunderbird Portable to manage 4 e-mail accounts.
My problem is that all e-mails that I send have the same address as a sender.
Even if I select another address from where to send a message from, the recipient always ends up seeing only one and the same of my addresses (the first in my list that happens to be from a google account).
As a result I cannot choose from what address to sent my mails from.
Do you know what I can do to solve this problem?