I'm wondering which MUA (or method) is the best one to send out large announcement mailings, which will respect the layout/format of e-mail and respects the RFC's. For example, within my company we use Lotus Domino and I'm curious when I initiate a distribution from a Lotus Notes client, recipients will be able to read the content as meant. Also I'm interested in the combination of sending out a mailing in both HTML as in plain text format. Any suggestions? Michael Medenblik