I have one IMAP-account. Multiple mail-addresses on different domains are routed to this single IMAP-inbox (e.g. firstname.lastname@example.org, email@example.com, firstname.lastname@example.org). Now I want to send mails via SMTP but want to choose which mail-addy is the sender.
On Mozilla Thunderbird this works perfectly using a feature called "Identities". Is MS Outlook 2003 capable of doing that?