I messed up my mail app somehow. May have been that I accidentally deleted the file English.lproj. I found an older version of the file here on MMi and copied it over to the phone, but the mail app keeps crashing (it opens for a second, then goes back to the springboard).
I think replacing it with an iP4 version might do the trick. If it doesn't, maybe just replacing the entire app would be the solution.
Would anyone be willing to email or post the MobileMail.App file and the English.lproj file from iP4, 4.0.1? It would be greatly appreciated.
There are some incredibly clever people on this site - I'm open to any suggestions you may have as to how I can get mail to work.