Recently, the company I work for decided that they wanted to send out an electronic newsletter with a nicely rendered html email.
We got some offsite designers to provide us with a html file but it just wouldn't render correctly when sent from Lotus Notes. We were creating the email by creating a new memo then putting the cursor in the body and selecting File, Import.
The resulting import was close, but not perfect.
On a whim, I downloaded Mozilla Thunderbird (it will be a cold day in hell before I use outlook), and set up the outgoing mail server as a SMTP server with our domino server's address.
I ignored the POP settings because I wasn't trying to get inbound email.
Finally, I tweaked the from address on the email so that it would come from our domain and sent it to our distribution group. The mail went smoothly and correctly formatted. Since my "from address" was an internal mailbox, all replies/bounces will go to that address.
People often forget that you don't have to use a Notes client to send mail via a domino server.