WP Mail Options Plugin

This plugin allows you to set almost all options of emails sent by WordPress.
In fact, it just simply modified the value of the PHPMailer’s member variables.
Warning: This plugin is only for advanced users.
You should know exactly what effect each option will have on the behavior of PHPMailer when you use this plugin.

1. Upload the full directory into your wp-content/plugins directory
2. Activate the plugin at the plugin administration page
3. Open the plugin configuration page, which is located under “Settings -> WP Mail Options” and customize settings.

1. 

   The settings menu

Why does the From address still show as the default or show up as ‘sent on behalf of’ the default address

Possibly your mail server has added a Sender: header or is configured to always set the envelope sender to the user calling it.

0.2.3

• fix “Strict Standards” error;

0.2.2

• custom headers.

0.2.1

• fix donate button bug.

0.2.0

• now can send test mail.
• options page was optimized.

0.1.10

• fix some warning.

0.1.9

• fix some warning.

0.1.8

• fix some warning.
• improve options page

0.1.7

• Tested up to: 3.4.2

0.1.6

• Tested up to: 3.4.1
• fix “You do not have sufficient permissions to access this page.”.

0.1.4

• Tested up to: 3.3.2

0.1.4

• fix “You do not have sufficient permissions to access this page.”.

0.1.3

• Tested up to: 3.2.1

0.1.2

• Tested up to: 3.1.2

0.1.1

• Fixed that the options were saved to a wrong path (wp-admin/options.txt) instead of (wp-content/plugins/wp-mail-options/options.txt), when this plugin was deactivated.
• Updated options page UI.

0.1.0

• first version.