Comment: Is there a way to post content by email?

You are right, mail forwarding is the optimized solution, since messages are processed as soon they arrive at target host.

But unfortunately the approach you describe only apply to Unix boxes, and would like to support other operating systems as well, including Windows and Mac.

This is why we should do it with PHP-only and a cron-like approach.

You said somewhere that you have played with WordPress, which seems to be a very powerful blogging tool. Therefore I have downloaded the wp package and will look at their blogging-by-email script. I will review Drupal and blog:cms as well.

At the same time I will have to review RFC to ensure we are implementing standards correctly.

Guess at least one or two weeks of work would be necessary to complete this. Cheers...