Mailgun

Mailgun cloud-based email service is the only solution which provides complete and comprehensive email functionality.

Mailgun offers:

Optimized, scalable delivery of messages. Intelligent incoming email parsing and HTTP-based push-to-app service. Superior real-time email analytics. Real time mail log with search. Programmable mailboxes with support for POP3 and IMAP. Multiple email domains per account.

In addition to standard email services, Mailgun allows for more advanced messaging capabilities such as:

Sending in testing mode. Server-side MIME assembly: allows developers without deep email knowledge to assemble and send complex messages without any 3rd party libraries. Scheduling delivery for a specified time. Control over message priority. Powerful message forwarding/filtering language for intelligent handling of incoming traffic. Quotation removal and signature detection for incoming emails.

Learn more about Mailgun in this Quickstart Guide