MailChimp for WordPress

The MailChimp for WordPress plugin can allow all site commenters to subscribe to a MailChimp newsletter whenever they post a new comment on the site.

This is done by a checkbox added under the commenting form by the plugin.

Comments marked as spam will not be added to the MailChimp list.

Installation:

Unpack and upload it to the /wp-content/plugins/ directory.
Activate the plugin through the 'Plugins' menu in WordPress.

What is new in this release:

• Fixes:
• PHP notice in includes/class-tools.php, introduced by version 2.3.

What is new in version 2.3.4:

• Fixes:
• PHP notice in includes/class-tools.php, introduced by version 2.3.

What is new in version 2.2.8:

• Fixes:
• "Select at least one list" notice appearing when unselecting any MailChimp list in Form settings
• If an error occurs, textareas will no longer lose their value
• Improvements:
• Improved the way form submissions are handled
• Minor code & documentation improvements
• Updated Dutch, French, Portugese and Spanish translations
• Additions:
• Added sign-up checkbox integration for WooCommerce checkout.
• Added sign-up checkbox integration for Easy Digital Downloads checkout.
• The entered email will now be appended to the URL when redirecting to another page

What is new in version 2.2.6:

• Fixes:
• "Select at least one list" notice appearing when unselecting any MailChimp list in Form settings
• If an error occurs, textareas will no longer lose their value
• Improvements:
• Improved the way form submissions are handled
• Minor code & documentation improvements
• Updated Dutch, French, Portugese and Spanish translations
• Additions:
• Added sign-up checkbox integration for WooCommerce checkout.
• Added sign-up checkbox integration for Easy Digital Downloads checkout.
• The entered email will now be appended to the URL when redirecting to another page

What is new in version 2.1:

• Fixes:
• Some fields lost its value when a form error occurred
• Improvements:
• Minified all CSS and JS files
• Required MailChimp fields are now validated server side as well
• Birthday and address fields are now automatically formatted in the correct format
• Improved code, memory usage and class documentation
• Additions:
• Brazilian translations
• mc4wp_form_messages filter to register custom error messages
• mc4wp_form_message_position filter to set position of error messages (before or after fields)

What is new in version 2.0:

• Improvements:
• CSS is now served as static CSS instead of being served through PHP.
• The anti-spam honeypot is now added to the sign-up checkbox as well.
• Improved object-oriented code architecture and better class documentation
• Better CSS reset for the various form themes to increase theme compatibility
• Added class autoloading to the plugin
• Various minor code improvements
• Additions:
• Can now add a captcha field to your sign-up forms by installing the BWS Captcha plugin and using [captcha] inside your form mark-up.
• All settings pages are now fully translatable. The plugin has just 2 translations available yet (en_US and nl_NL) so if you're good at translating, please send me your language pack for the plugin.

What is new in version 1.5.8:

• Fixes:
• 'call to undefined function' when using Avia Layout Builder.
• "Already subscribed" message never showing.

What is new in version 1.5.6:

• Fixed:
• Honeypot textarea showing in some themes
• Improved:
• Plugin will automatically strip duplicate <form> tags from form mark-up
• Better code documentation
• Code is now more adhering to WP code standards
• Added custom error type to error message filter to allow developers to show custom error messages

What is new in version 1.5.2:

• Improved:
• Direct file access security
• Now using native WP function to catch SSL requests
• Changed call method in API class to public.
• Added:
• Filter to edit the required capability to access settings pages
• Filter to edit form action
• Filters to allow extra form validation, like a captcha field.

What is new in version 1.5.1:

• Fixed:
• Having to submit form twice for some www-hosts.
• Improved:
• Scroll to form now waits until page has completely loaded.

What is new in version 1.4.8:

• Fixed:
• "Bug" that fetched lists again on every plugin settings page - huge performance improvements on the settings pages.
• Improved:
• Longer cache time for combined CSS file.
• Prevented indexing of plugin directories
• Default checkbox CSS for themes that have custom checkbox styling.
• Improved: Better scroll to form element after form submit. Vertically centers form element with and without jQuery now. No ugly page jump.

What is new in version 1.2.3:

• Fixed:
• Certain MailChimp fields not showing up in "Add field" dropdown.

What is new in version 1.1.5:

• Fixed:
• Form using checkbox settings for list and double opt-in instead of form settings.

What is new in version 1.1.3:

• Added:
• First and lastname to registration hook, works with Register Redux Plus for example.

What is new in version 1.1.2:

• Fixed:
• Field wizard initial value not being set in some browsers
• CF7 checkbox subscribing everyone regardless of checkbox setting
• Added:
• bbPress compatibility, you can now add a sign-up checkbox to the new topic and new reply forms
• Improved:
• Various code and debug improvements
• Field wizard now wraps radio inputs and checkboxes in a label
• Usability when using sign-up checkbox with Contact Form 7
• Removed:
• Form usage option

What is new in version 1.1.1:

• Fixed warning for BuddyPress sites.

What is new in version 1.0.3:

• Added HTML comments
• Added upgrade link to plugins overview
• Improved compatibility with third-party plugins when using checkbox, smarter e-mail field guessing
• Improved: easier copying of the form shortcode from form settings pages
• Added uninstall function

What is new in version 0.8.2:

• Improved:
• It is now easier to add fields to your form mark-up by using the wizard. You can choose presets etc.
• All field names that are of importance for MailChimp should now be uppercased (backwards compatibility is included)
• Fields named added through the wizard are now validated and sanitized
• Added caching to the backend which makes it way faster
• Various usability improvements

What is new in version 0.8.1:

• Fixed:
• Typo in form success message
• Improved:
• Various little improvements
• Added:
• Option to hide the form after a successful sign-up

What is new in version 0.8:

• Improved:
• CSS reset now works for registration forms as well.
• Code, removed unnecessary code, only load classes when not existing yet, etc.
• Improved: hooked into user_register to allow third-party registration form plugins.
• Added:
• Shortcode for usage inside Contact Form 7 form templates [mc4wp_checkbox]
• Catch-all, hook into ANY form using ANY input field with name attribute mc4wp-do-subscribe and value 1.
• Fixed:
• Subscribe from Multisite sign-up
• 404 page when no e-mail given.

What is new in version 0.6.2:

• Fixed:
• Double quotes now enabled in text labels and success / error messages (which enables the use of JavaScript)
• Sign-up form failing silently without showing error.

What is new in version 0.6:

• Fixed:
• Cannot redeclare class MCAPI.
• Scroll to form element.
• Added:
• Notice when copying the form mark-up instead of using [mc4wp-form].
• CSS classes to form success and error message(s).

What is new in version 0.5:

• Added scroll to form element after form submit.
• Added option to redirect visitors after they subscribed using the sign-up form.

What is new in version 0.4.1:

• Fixed correct and more specific error messages.
• Fixed form designer, hidden fields no longer wrapped in paragraph tags.
• Added text fields to form designer.
• Added error message when email address was already on the list.

What is new in version 0.2:

• Fixed small bug where name of comment author was not correctly assigned.

What is new in version 0.1:

• Beta release.

Requirements:

• WordPress 3.7 or higher
• MailChimp API key