* Support SMTP commands: HELO, MAIL FROM, RCPT TO, DATA, QUIT. * Support ESMTP commands: EHLO, AUTH LOGIN, AUTH NTLM, AUTH CRAM-MD5. * Support Normal recipient, carbon copy recipient and blind carbon copy recipient. * DNS lookup to send email without specified SMTP server. * Test validity of email address. * Support asynchronous mode and event driving. * Support Text/Html/Alternative body. * Support multiple attachments and embedded pictures. * Import text/html to email body from specified file/URL. * Add customized headers in email. * Save email as specified file. * Load email file for sending. * Mail Queuing with EASendMail Service. * Support Socks4/Socks5/Http proxy connection. * DomainKeys and DKIM signature. * Exchange Web Service and WebDAV. * Gmail SMTP OAUTH/XOAUTH 2.0. * Protocol: SSL v2, SSL v3, TLS v1 * Key Algorithms: RSA, DH * ESMTP command: STARTTLS * Signed and Encrypted Message with digital certificate * Signing Algorithms: rsa-sha1, CRAM-MD5, rsa-sha256 * Encryption Algorithms: RC2, RC4, DES, 3DES, AES * Send email in background. * Support mulitple threadings. * Replace variables in email body text. * Select recipients from database. * Send email in schedule. * Provide failure delivery-report. * Supports .NET Compact Framework 2.0/3.5 * .NET Framework: Separate builds for .NET 1.1, 2.0, 3.5, 4.0, 4.5 * ActiveX/COM: Separate builds for 32bit/x64

• Includes pre-built view controllers for common tasks such as composing email, viewing a list of threads, and authorizing an account. • Provides native, Objective-C models for threads, messages, contacts, and attachments, and high-level methods for interacting with them. • Automatically caches data in an SQLite store, allowing you to create applications with great offline behavior with very little effort. • Allows you to load individual slices of data from the Inbox API, such as a list of threads in the user's inbox with attachments, or create robust email applications that maintain a local cache and sync the user's entire mailbox. • Comes with kickass sample apps.