For the last couple of months I have been having strange problems when sending e-mails with attachments using WLM with my Win 7 PC after using it successfully for a couple of years.

If I try to send a message with two or three pictures attached - say about 1Mb each, the "sending e-mail" message appears for a few minutes, then dissappears as expected. 

The recipient receives about a dozen separate e-mails mostly comprising pages and pages of random text and symbols which I assume is the coded representation of the pictures.

The text of the e-mail is also buried in there somewhere.

At my end, the e-mail just disappears: ie it does not appear in my SENT ITEMS folder although it may suddenly appear there after a day or two.

There are no error messages at any time.

I have also had the same problem with a 800Mb WORD file as an attachment.

Mail sending format in WLM Options is set to HTML.  I can't find anything about attachment size limits.

Any help would be very welcome.