Please be advised that there's currently no out-of-the-box option to do this in BuddyBoss.

Modifications are typically considered custom work, but we are making an exception in this case. Kindly check our Support Policy here: https://www.buddyboss.com/support-policy/.

Kindly try adding the following code in your theme files. This will prevent the email from being sent when a user changes their email.

1. Go to Appearance > Theme File Editor
2. Under “Select theme to edit”, choose (BuddyBoss Child/Whatever theme is active), then click “Select”.
3. Below Theme Files, select Theme Functions (functions.php).
4. Append the following just before the closing PHP tag “?>”:
add_filter('send_email_change_email', '__return_false');

NOTE: Please make a backup of your site.

5. Click “Update File”.