Crate async_smtp

Async implementation of the SMTP protocol client in Rust.

This SMTP client follows RFC 5321, and is designed to efficiently send emails from an application to a relay email server, as it relies as much as possible on the relay server for sanity and RFC compliance checks.

It implements the following extensions:

• 8BITMIME (RFC 6152)
• AUTH (RFC 4954) with PLAIN, LOGIN and XOAUTH2 mechanisms
• STARTTLS (RFC 2487)
• SMTPUTF8 (RFC 6531)
• PIPELINING (RFC 2920)

Modules

• authentication
  Provides limited SASL authentication mechanisms
• commands
  SMTP commands
• error
  Error and result type for SMTP clients
• extension
  ESMTP features
• response
  SMTP response, containing a mandatory return code and an optional text message
• util
  Utils for string manipulation

Structs

• EmailAddress
  Email address
• Envelope
  Simple email envelope representation
• SendableEmail
  Sendable email structure
• SmtpClient
  Contains client configuration
• SmtpTransport
  Structure that implements the high level SMTP client

Enums

• Message
  Message buffer for sending.