Ultimate Member customization. Code snippets for email notifications.

my_disable_email_notification_sending.php

<?php

/**
 * Disable email notifications for specific roles.
 *
 * @param bool   $disabled Does an email is disabled? Default: false.
 * @param string $email    Email address for sending.
 * @param string $template Email template.
 * @param array  $args     Arguments for sending email.
 * @return bool            Return true to stop mailing.
 */
function my_disable_email_notification_sending( $disabled, $email, $template, $args ) {

	// List the roles for which email notifications should be disabled.
	$roles = array(
		'contributor',
		'um_pending-member',
	);

	$user = get_user_by( 'email', $email );
	if ( $user ) {
		$user_roles = UM()->roles()->get_all_user_roles( $user->ID );
		if ( array_intersect( $roles, $user_roles ) ) {
			$disabled = true;
		}
	}

	return $disabled;
}
add_filter( 'um_disable_email_notification_sending', 'my_disable_email_notification_sending', 10, 4 );

my_template_tags.php

<?php

/**
 * Add role-specific content to the email template.
 *
 * @tutorial https://docs.google.com/document/d/1Vo4OrpEjzw4QILYgTWjso2EJUZmyQ4U7DM-CDdRriP4/edit?usp=sharing
 */
add_filter( 'um_template_tags_patterns_hook', 'my_template_tags_patterns', 10, 1 );
add_filter( 'um_template_tags_replaces_hook', 'my_template_tags_replaces', 10, 1 );
function my_template_tags_patterns( $search ) {
	$search[] = '{welcome_content_for_subscriber}';
	$search[] = '{welcome_content_for_customer}';
	$search[] = '{welcome_content_for_um_member}';
	return $search;
}
function my_template_tags_replaces( $replace ) {
	$role = um_user( 'role' );
	$replace[] = 'subscriber' === $role ? 'This message is shown in the welcome email for users whose priority user role is "Subscriber".' : '';
	$replace[] = 'customer' === $role ? 'This message is shown in the welcome email for users whose priority user role is "Customer".' : '';
	$replace[] = 'um_member' === $role ? 'This message is shown in the welcome email for users whose priority user role is "Member".' : '';
	return $replace;
}

um_email_changedaccount_email_bcc.php

<?php

/**
 * Add the "Bcc" header to the "Account Updated" email.
 * Send the mail copy to the website admins.
 *
 * @param string $subject  Email subject.
 * @param string $template Email template key.
 */
function my_um_email_changedaccount_email_bcc( $subject, $template ) {
	if ( 'changedaccount_email' === $template ) {
		$bcc = um_multi_admin_email();
		UM()->mail()->headers .= 'Bcc: ' . implode( ',', $bcc ) . "\r\n";
	}
	return $subject;
}
add_filter( 'um_email_send_subject', 'my_um_email_changedaccount_email_bcc', 10, 2 );

This code is an example for the Ultimate Member plugin.

Related documentation: Emails Tab, Placeholders for email templates