Would you please add a feature for Mailer to Bind a specific IP address ?

[ldcsaa]

I have a Multiple IP address machine, but the remote SMTP server need to receive mail from specific IP. Would you please add a feature for org.simplejavamail.api.mailer.Mailer to Bind a specific IP address ?
In addition, this feature is in great demand for application scenarios such as mass emailing.

[bbottema]

Implemented as first-class Mailer configuration.

Simple Java Mail now maps the local/source bind address to the correct Jakarta Mail property for the configured TransportStrategy (mail.smtp.* vs mail.smtps.*). It is also available through simplejavamail.smtp.localaddress / simplejavamail.smtp.localport, Spring config, and CLI.

Usage:

Mailer mailer = MailerBuilder
    .withSMTPServer("smtp.example.com", 587, username, password)
    .withTransportStrategy(TransportStrategy.SMTP_TLS)
    .withLocalBindAddress("203.0.113.10")
    .buildMailer();

For the rare case where a fixed local source port is required:

.withLocalBindAddress("203.0.113.10", 25252)