I've been having problems using Send Mail with Thunderbird on WinXP with FM Adv. 8.0v3. All carriage returns are stripped. If I use the GetasCSS() function, the email goes out properly formatted. However, Outlook, Mac Mail, Eudora all show the html codes, so this is not my answer.

Does anyone know of a preference in Thunderbird or issues with TB that could fix this carriage return problem?

... not really, but try embed your field into html tags i.e. "" & GetAsCSS(field) & "" (might help with the other clients)

Might also want to play with the default content settings in thunderbird to make html emails default -- plain text is boring.

Well, I upgrade TB to version 1.5.0.10 (20070221) and my carriage returns are retained when I paste a text field that has carriage returns. So, it was a TB bug. Now, it works the same for Outlook, Outlook Express, Mail and Entourage.