This plugin is outdated and might not be supported anymore
Group Members Mail Plugin

Group Members Mail Plugin

Details
View on WordPress

Allows Buddypress group Mods to send email to all group members from group admin/manage section.
To enable E-mail members for mods simply put the code given below in your bp-groups-members-mail.php file in the end from wp-admin-> plugins-> editor :

add_filter('gmm_enable_for_mods','gmm_enabled_for_mods');
function gmm_enabled_for_mods(){
    return true;
}

By default this “E-Mail Members” section is available to mods and admin .
To change it a filter is available and you can change the access like this :
To restrict this option to admins only
add_filter(‘bp_gmm_auhority’,function(){
return ‘admin’;
});

Details

Plugin code:
groups-members-mail
Plugin version:
1.1
Author:
Outdated:
Yes
WP version:
3.0.1 or higher
PHP version:
or higher
Test up to WP version:
4.6.29
Total installations:
10
Last updated:
2017-01-29
Rating:
Times rated:
3
buddypress
extension-mail
groups
mass
members