I am testing some templates with smarty and I don't succeed to send them when the email is - apparently - encoded in html. I could send them as normal text message. I could also send html templates that I have. But I can't send messages using both HTML template and Smarty.
I am sending from within Civicrm and it runs endlessly, when other types of messages are immediately sent (and well received).
Is this due to a limitation, a bug or should I set some parameters somewhere?