The "Choose from a list of commonly used addresses" option is already available
-- just set up one account for each address you use. Point them all to the
right SMTP server. Point only one of them to the right POP/IMAP server. And
then when you're sending mail select the account you want the mail to come from
from the nice dropdown.
The "Choose from a list of commonly used addresses" option is already available
-- just set up one account for each address you use. Point them all to the
right SMTP server. Point only one of them to the right POP/IMAP server. And
then when you're sending mail select the account you want the mail to come from
from the nice dropdown.