Can SendGrid be configured to work with Email Templates?

Hi.

As you said, the Email Templates plugin doesn’t integrate with the SendGrid plugin. We have reproduced this issue.

From looking at the source code on the Email Templates plugin we can see that the author(s) did integrate with several other plugins including wpMandrill.

For this case, we cannot integrate with this plugin, the Email Templates plugin author(s) need to integrate with the SendGrid plugin as they did for wpMandrill. You should probably request this on their Support page.

As a temporary solution, as you requested, you can try this :

function change_sendgrid_html_email( $message ) {
    $mailer = new Mailtpl_Mailer( 'mailtpl', MAILTPL_VERSION );
	$aux['html'] = $message;
	$aux = $mailer->send_email_mandrill( $aux );
	return $aux['html'];
}

add_filter( 'sendgrid_mail_html', 'change_sendgrid_html_email' );

Keep in mind that this is of a hack-like nature and we cannot offer any guarantees for this. It will only work if you set the Content-Type to text/html on the SendGrid Plugin Settings Page.

We would recommend you wait for the developers of the Email Templates to implement an integration or you can try using another plugin that does work with the SendGrid plugin.

Thanks,
SendGrid