This plugin hasn’t been tested with the latest 3 major releases of WordPress. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.



Plugin which sends emails to us from WordPress, for comments and new posts, except our own comments and posts. You can disable the option in your profile. At default, all user are receiving an email except the author.

Crafted by Inpsyde

The team at Inpsyde is engineering the web and WordPress since 2006.


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Bugs, technical hints or contribute

Please give us feedback, contribute and file technical bugs on GitHub Repo.


= Plugin settings =
By default, the plugin sends a mail to all registered users of a blog on new posts or comments, except a user disables the functionality for itself (opt-out). As of version 0.0.5 you can change this behaviour to opt-in with the filter iac_default_opt_in :

add_filter( 'iac_default_opt_in', '__return_true' );

Make sure, this code runs on the action plugins_loaded with a priority lower than 10 or earlier.

With version 0.0.5 the plugin got settings (Settings→Reading). The one new option allows you to send all emails with the Bcc-header to hide users email-addresses to all other recipients. This option is disabled by default. You have access to the default settings via the filter iac_default_options. An array is passed to this function with the key send_by_bcc. Change the value to ‘1’ and return the array on your callback function.

User settings handling

To change the users settings (inform about posts, inform about comments) use the action iac_save_user_settings like this:

    $inform_about_posts, # '1', '0' or NULL if the user didn't changed anything
    $inform_about_comments # '1', '0' or NULL if the user didn't changed anything

Getting the current user settings is also easy:

$user_settings = apply_filters( 'iac_get_user_settings', array(), $user_id );= License =

Good news, this plugin is free for everyone! Since it’s released under the GPL, you can use it free of charge on your personal or commercial blog.


The plugin comes with various translations, please refer to the WordPress Codex for more information about activating the translation. If you want to help to translate the plugin to your language, please have a look at the .po file which contains all definitions and may be used with a gettext editor like Poedit (Windows) or plugin for WordPress Localization.


  • Settings on profile page
  • Settings on Settings → Reading



  • WordPress version 3.0 and later (see tested up to)
  • PHP 5.3; maybe 5.2, but untested


  1. Unpack the download-package
  2. Upload the folder and all folder and files includes this to the /wp-content/plugins/ directory
  3. Activate the plugin through the ‘Plugins’ menu in WordPress
  4. Optional: Change global settings on ‘Settings’ –> ‘Reading’
  5. That’s all


May 14, 2019
I use this plugin in combination with a P2 blog for our team internal communication. Really useful! Coworkers can subscribe if they want and don't get unnecessary SPAM.
Read all 2 reviews

Contributors & Developers

“Informer” is open source software. The following people have contributed to this plugin.


Translate “Informer” into your language.

Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.



  • Send mails in smaller groups and schedule sending of groups
  • add new Filter Hooks
    • iac_get_members
    • iac_single_email_address
    • iac_email_address_chunk
    • iac_mail_to_chunking
    • iac_mail_to_chunksize


  • Change Hook for send only on published posts
  • Change Mail-header for use in all systems
  • Codestyling
  • API for e-mail signature Hook iac_signature_separator; Function append_signature( $message, $signature = '' )
  • BCC possibility
  • Add new filters, like shortocodes
  • Add settings to global default options on ‘Reading’
  • Start to handle medias, attachments
  • Change autoloader to also usable without spl
  • Change hook to transition_post_status to change send mail – now send only on new posts, not update posts
  • Update language files


  • Option to send email by Bcc-header
  • API to change the plugins default behaviour (opt-in/opt-out)
  • Fix for update on user profile in WP 3.4*


  • small fix for hook to use static method


  • first release on


  • Release first version