I created a new lightning email template using html as source. It works fine so far. However, I added 2 merge fields. Recipient.FirstName and User.Name. When trying to send the mail from the template I get the following error:
"We don't recognize the field prefix Recipient. Ensure that you are using an associated record when sending the email."
I've tried different formats such as {{{Object.Field}}} and {!Object.Field} but it doesn't work.
Anyone has experience with that and knows how to solve it?
Thx!