Duke,
> The best thing would be to enable Mozilla to be able to handle multi-part
> binary attachments - just like Agent, and Xnews (and other email clients)
> can handle large attachments by chopping them up and sending them as
> multiple emails.
>
> The person receiving them gathers them all together, highlights them all
> and then selects "decode" and viola - the original attachment is restored!
for the "combine and decode" part of this, see
http://bugzilla.mozilla.org/show_bug.cgi?id=60981
No bug on "chopping and sending". Feel free to log it.
-Seth