emails – How to have URLs show up as clickable links in Webform submissions sent via Swift Mailer

I’ve got Swift Mailer and Mailsystem installed on a Drupal 8 site I maintain, mostly to handle email submissions from Webforms.

And everything’s been working fine — except that just recently we got a Webform submission in which the person had included some URLs in the main message area of the webform (a textarea field). And I was surprised that they did not show up as clickable links in the email — just as plain text. Even though URLs normally convert into links in most emails, even ones just sent from someone’s individual email client.

Which means that the site owner, who is not very technical, couldn’t figure out what to do with them and I had to explain that he would need to copy and paste the URLs into his browser, which he was not very happy about.

I explored the settings of both the Webform in question and Swift Mailer to see if I could find something that might affect that, but with no luck so far.

Does anyone know how I might be able to get URLs in HTML emails sent by Swift Mailer to show up as clickable links?