Email problem with smtp servers
I guess this isn't actually web security - but it's linked. How can I keep my real email address secret? ie I want to have a mask on a genuine address, but thunderbird will put my gmail address on everything. I know some clients like Outlook support multiple identities, but as far as I know, only by downloading multiple copies of a message. Apparently thunderbird has a bug that doesn't allow you to chose smtp servers for each email address - it defaults to the top one on the list.
I used to be able to use yahoo settings to send all mail and that didn't put my yahoo address on, but now it will only send yahoo mail. Only gmail seems to accept mail from anywhere. When your address has to go on the wider internet, the amount of spam isn't funny!