.dat files & emails galore!

[barty2]

The last couple of days I have sent jpg files which have mysteriously arrived at their destination as .dat files. How does that happen?  Also, the email arrived 5 TIMES but I only hit send once?  What is going on?

Two weeks ago I went over to Windows 7 & therefore Live Mail so is there some sort of mismatch going on program wise?

[PocketAces · Accepted solution]

Was the 5 copies of the message all the same mail or were did they say part 1/5, then 2/5.  It may be that if it is a large attachment then Windows Mail will download the message in sections. Or the message just might have timed out on the incoming server and then was added to the queue again and again... If this was a one off instance I wouldn't worry about it to be honest.

It sounds like your Windows Mail is not sending in HTML format, this can change attachments to .dat files, its fairly common, to change to HTML format follow the steps below:

Open Windows Mail
Select Tools from the menu bar along the top
go down to options
select the 'send' tab
Under Mail Sending Format and Select HTML.