rmpel / wp-email-essentials

A must-have plugin for WordPress to get your outgoing e-mails straightened out.

WordPress Mail Essentials

A plugin to make WordPress outgoing emails better.

BREAKING CHANGES:

From version 4.1.0 on, the plugin is fully WP Coding standards compliant and fully Namespaced. The side effect is that While versions 4.0.0 - 4.0.2 are backwards compatible; version 4.1.0 is NOT -- IF -- you access the WP_Email_Essentials methods directly.

Please TEST your website with the latest version of WPES locally or on a test-server BEFORE you update your live website.

Introduction:

The main purpose is to vastly reduce the chances of your emails being marked as spam or being rejected.

This plugin offers your WP-site...

• A good From name,
• A good From email address,
• The correct envelope-from e-mail address,
• Reformatting as HTML, if needed, with proper plain text alternative,
• process shortcodes,
• UTF8-recoding,
• filters for adding CSS, header, footer and body template,
• convert CSS to inline styles for better support in tools like GMail, Outlook Online, Hotmail etc.),
• SMTP configuration,
• Send emails with multiple addressees as separate emails (less spammy),
• S/MIME signing,
• DKIM signing,
• Altering destination of certain emails normally addressed to the site-admin,
• Keeping a history of outgoing emails with their results (for debugging, history is cleared on deactivation of this function),
• When history is enabled, add a tracker to track correct receipt of emails *1,

Important note:

This tool is created for people that know what to do and why they do it. If you don't know what a feature does, ask for help :)

*1) Under GDPR, storing and tracking emails is prohibited, the history feature is meant for investigative purposes only!

WordPress Filters:

wpes_settings

Parameters:

• (array) $settings The current settings of the plugin.

Expected return:

• (array) The new settings of the plugin.

---

wpes_defaults

Parameters:

• (array) $defaults The current default settings of the plugin.

Expected return:

• (array) The new default settings of the plugin.

---

wpes_body

Parameters:

• (string) $should_be_html A text that should be html, but might not yet be, your job to make a nice HTML body.
• (PHPMailer) $mailer The PHPMailer object (by reference).

Expected return:

• (string) A text that should be html.

---

wpes_head

Parameters:

• (string) $the_head_section HTML that is the HEAD section of the HTML email.
• (PHPMailer) $mailer The PHPMailer object (by reference).

Expected return:

• (string) The altered HEAD section of the HTML email.

---

wpes_css

Parameters:

• (string) $the_css CSS for the email (empty by default).
• (PHPMailer) $mailer The PHPMailer object (by reference).

Expected return:

• (string) The (altered) CSS.

---

wpes_subject

Parameters:

• (string) $the_subject Subject for the email.
• (PHPMailer) $mailer The PHPMailer object (by reference).

Expected return:

• (string) The (altered) Subject.

Changelog:

5.3.0: Move E-mail testing to the bottom and add more features, In Multisite, also check the Site Admin for candidate for replacement (Alternative Admins).

5.2.5: More improvements for PHP 8 compatibility, code optimisation and generic bugfixing

5.2.4: Code improvements for PHP 8.0 compatibility

5.2.3: Added filter to disable the HTML envelope set by GravityForms, so we can use our own.