MailCore 2 : E-mail Library for Mac & iOS
MailCore 2 is an e-mail library for Mac & iOS that is designed to make working with e-mail protocols easier. The library provides a simple and asynchronous Objective-C API to work with various popular e-mail protocols. It has support for POP, IMAP and SMTP protocols, features RFC822 parser and generator and Asynchronous APIs and also supports HTML rendering of messages. The library has a decent documentation and also features several usage examples.