At the moment, Liquid only works in the body of autoresponse emails and not in the subject line. I would like Liquid functionality in the subject line so that the autoresponse emails for subscription renewal are more personalised and therefore have a higher chance of being opened by the recipient.
It is already the case that Liquid works in the subject line of email blasts, I think this should be the same for autoresponse emails too!
Thanks Eleanor! I'll pass this along to the team and let you know if there are any updates - this makes sense to me!