# All Classes

All Classes Interface Summary Class Summary
MailService: Service for sending MIME messages.
MessageBuilder: Builder for MIME messages.
MessageIdProvider: Provider for message identifiers.
SimpleMailService: Service for sending MIME messages (mails) via `SMTPS` protocol.
SimpleMessageBuilder: Builder for MIME messages. The message builder is using the `Session` form `SimpleMailService` and the standard charset `UTF-8`.
SimpleMessageIdProvider: Provider for message identifiers. Creates a `Message-ID` in form of `<UUID>.<current time in milliseconds>@<host>` where `host` is configurable.