Reply To: ‘bp_email_use_wp_mail’ Causing Issues
2.) Then when altering configuration (i.e. adding add_filter( ‘bp_email_use_wp_mail’, ‘__return_true’ ); to BP_Custom), and testing again, the emails output a combination of WP Better Email and the default template with various CSS Styles altering different parts of the email with each new email sent.
BTW, this is exactly what I expect to happen. The content from the plain text version of the email from BuddyPress into the template provided by, in this case, WP Better Email.
If you’re saying extra CSS is getting involved, I strongly suspect you have some other plugin or theme component adding extra junk.