I got lots of mixed info when I tried to do this. I've since got this working so for anyone else:

Account Name: whatever (I use "Home")
Mail Service: Other
Protocol: POP

Username: <your RR mail ID (without @nycap.rr.com)
Password: <your RR mail password>

Email Address: < your full RR address: ie - myname@nycap.rr.com>
Incoming Mail Server: pop-server.nycap.rr.com
Outgoing Mail Server: smtp.vzwmail.net

(select ADVANCED)

Incoming
Port Number: 110
don't use SSL
don't use APOP

Outgoing
Port Number: 25
don't use SSL
USE ESMTP
username: <your phone number@vzwmail.net>
password: <your vtext.com password>

That should do it. I hope this helps!