I've been given the task of optimizing HTML emails for different email/webmail clients. I used to test the HTML file by doing a trick in Outlook Express, to make it send the raw HTML, but Microsoft seems to have stopped supplying Outlook Express now (I think "Live Mail" is supposed to replace it).
So my question is, is there a simple, quick way to send HTML emails? Maybe even a freeware program that does the job?
Puts Mail is the best bet these days. Check out an answer to a similar question by the creator of Puts Mail.