After lots and lots of tries, and tons of googling, I found the trick about the Sprint SMTP Outgoing Mail Server. I was attempting to set my POP account on my Pre but, using Sprint's SMTP server as outgoing mail server. After many retries, I did this, quoted from a member from the Sprint community forum:
Link:
How to Setup outgoing mail server for...
In plain words, add a new account, put your email address, BUT put any wrong password. In a few seconds, it will display "LOGIN failed", and the "Manual Setup" button will appear. Click it, and then put the correct info in your incoming mail server, and for the outgoing mail server put "
smtp.sprintpcs.com", Use Authentication, username:
xxxxx@sprintpcs.com (the
NAI exactly as it appears on
Device Info > More Info > Hardware tab > Scroll down to bottom), password: (the one you set up in the Sprint website in
My Online Tools > Email Server Password), Port 25, No Encryption.
I tried almost every other logical way of doing it on the Pre but, for some reason, I was unable to send emails at all. This way did the trick. Maybe the Email app has a bug, a weird one. Post here if this worked for you.