SMTP Mailer is a WordPress plugin by naa986 that allows you to configure a mail server which handles all outgoing email from your website. It takes control of the wp_mail function and use SMTP instead.
Settings:
SMTP Host: Your outgoing mail server (e.g. smtp.gmail.com).
SMTP Authentication: Whether to use SMTP authentication when sending an email (True/False). If you choose to authenticate you will also need to provide your username and password.
SMTP Username: The username to connect to your SMTP server.
SMTP Password: The password to connect to your SMTP server.
Type of Encryption: The encryption to be used when sending an email (TLS/SSL/No Encryption. TLS is recommended).
SMTP Port: The port to be used when sending an email (587/465/25). If you choose TLS the port should be set to 587. For SSL use port 465 instead.
From Email Address: The email address to be used as the From Address when sending an email.
From Name: The name to be used as the From Name when sending an email.
SMTP Mailer has been tested with the following form and contact form plugins:
Contact Form 7
Jetpack Contact Form
Visual Form Builder
Fast Secure Contact Form
Formidable Forms
Contact Form by BestWebSoft
More info: http://wphowto.net/smtp-mailer-plugin-for-wordpress-1482
