For more information I have the plugin WP Mail Bank configured to send email with the contact form
It may well be the address that bbpress is sending from.
this is typically noreply@ and if this email address does not exist then many email hosts will not permit its transit through the system.
bbp style pack
once activated go to
dashboard>settings>bbp style pack>Subscription Emails
where you can amend the address and change the wording as well
Put this in your child theme’s function file –
where %your-theme-name% is the name of your theme
$email = 'firstname.lastname@example.org'; // any email you want
and change the address
This is great, thanks you for your help, Robin