NDSMail now supports attachments. They can be saved to the flash card, and jpgs can be displayed directly. Attachment size will be limited though, probably to 1 MB.
I also added nicer buttons, which I think is the most important feature ever ;)
Head to http://www.bronto-online.de/ndsmail.htm for a screenshot ;)
The strange bugs are still there, so still no public release :/
Repost of previous entry
I'm still adding lots of features and improvements to NDSMail, but due to some very strange bugs (probably related to devkit 19b, but I am still investigating) there are no new releases at the moment. I hope this will be resolved soon.