This might help...
This has been really bothering me. I came up with this solution and have tested it. I hope it works for you too.
- Create your first e-mail
- Save it to your Drafts folder, in the usual way (in whichever account you're going to send from)
- Left-drag this e-mail FROM your drafts folder on to your DESKTOP
- Double click the icon it makes
- When it opens, from the Mail.app menu bar click Message > Copy to > click on the Drafts folder you want your e-mail to be saved in
- The e-mail that you double clicked from the desktop should still be open
- Now use this key-combination alt-⌘-T and you'll copy another version of the same draft e-mail to your drafts folder
- Repeat the key-combination for as many versions of the e-mail you need - you can work at some speed, it keeps up - no crashes. They will all go to your Drafts folder in the same way the Copy/Paste feature used to work
- Once you have as many copies in there as you need, double click each one from your drafts folder, add the recipient address and any customisation and SEND!
This problem appears in quite a few threads on the Apple forums, so I will cross post.
I've not seen this solution anywhere else, or anything similar.
I'm happy for you to share this, once you've tested it, and you can follow on
http://twitter.com/philipchapman
GOOD LUCK!