• Connect to standard IMAP server or secure server over TLS/SSL
• CRAM-MD5, DIGEST-MD5, NTLM, and Kerberos authentication methods
• Download and Manage Email Messages
• Manage Folders
• Download entire or partial messages to a disk file or stream
• Upload messages stored in a file or memory stream
• Copy, delete, purge and list messages

• Move messages between folders
• Mark/unmark message flags
• Create, rename, and delete mailboxes
• Subscribe and unsubscribe mailboxes
• Obtain mailbox information
• Search messages with advanced options
• IMAP API is compliant with RFC 3501, 2683, 2359, 1321, etc.
• Support for .NET Full Framework, Xamarin iOS, Mac, Android, Mono, .NET CF, and .NET Core, Standard (will be available soon)

• Connect to standard POP3 server or secure POP3 server over TLS/SSL
• List email messages
• Download entire or partial messages to a disk file or stream
• Delete messages
• Purge messages
• Obtain mailbox information

• POP3 API is compliant with RFC 1939, 2449, 1734, 1321, 2195, etc.
• Authenticate securely with APOP, CRAM-MD5, DIGEST-MD5, NTLM, and Kerberos methods
• Support for .NET Full Framework, Xamarin iOS, Mac, Android, Mono, .NET CF, and .NET Core, Standard (will be available soon)

• Connect to standard SMTP servers or secure SMTP servers over TLS/SSL
• Send bulk messages
• Send to relay SMTP server
• Static methods help send emails quickly
• SMTP API is compliant with RFC 2821, 1891, 1893, 1985, 2034, 2197, 2554, 3030, etc.

• Submit to IIS SMTP queue
• Support PIPELINING
• Delivery Status Notification (DSN)
• Obtain mailbox information
• ESMTP authentication with LOGIN, PLAIN, CRAM-MD5, DIGEST-MD5, NTLM, and Kerberos methods

The Ultimate Mail Expert offers a comprehensive interface for sending, receiving e-mail messages from a server and managing your mailbox remotely, all from within your application. In addition, it also allows you to inspect and categorize bounced email messages with Ultimate Bounce Inspector component. Furthermore, you can use the Ultimate Email Validator component to efficiently filter bad and good email addresses for your email campaign. All components in the package are 100%-managed .NET class libraries, and they include complete sample projects, as well as full technical documentation which help you become familiar with the features of the components.

In addition, it also allows you to compose, decrypt, encrypt, sign, and validate mail messages. If you need the Xamarin Android, iOS and .NET CF version, visit Ultimate Mail Library for Mobile for more details.

Ultimate Mail Merge, a part of the Mail Expert package, helps you send personalized e-mail messages utilizing the power of .NET Framework with the Ultimate Template Engine and Ultimate Mail components. In addition, the libraries also support ASP.NET Medium-Trust environment configuration, making it possible to deploy your web applications using our products to shared hosting servers.

A high-performance Bounce Inspector that enables your .NET applications to easily inspect and categorize bounced email messages with a few lines of code. Bounce Inspector can scan EML and Outlook MSG messages loaded from many sources such as local files, memory stream, IMAP mailboxes, and POP3 mailboxes. The inspection result can be used to update email address lists, create email campaign reports, etc. The component is a part of the Mail Expert package.

Ultimate Email Validator is a 100%-managed .NET class library that adds powerful and comprehensive e-mail address validation to your .NET applications without sending e-mails to recipients. You can easily validate bulk e-mail addresses loaded from many sources such as list, text file, CVS, DataTable, and DataSet using single or multiple threads with a single line of code.