Our application generates alerts and we use ACF fields to hold email subject lines and bodies. The subject line for one type of alert has never worked properly. Because I couldn’t see anything I assumed it was empty but, in working with Local and MailHog to retool the alerts, I learned that there is a subject line, but it’s polluted with encodings, generating
Subject: =?us-ascii?Q?OSBS:_Your_Use_Application_has_been_Submitted_a?= =?us-ascii?Q?nd_is_Under_Review?=
instead of
Subject: OSBS: Your Use Application has been Submitted and is Under Review
Our methods work for email bodies and for other alert subject lines. It’s all baffling: how it got like this, how to find the root cause, how to fix it.
I’d appreciate any insights, thanks, I haven’t seen anything like this in many years.
I’ll add that these fields are stored in Options pages and are retrieved using
$subject = get_field('application_approved_subject', 'options');
before being passed on to wp_mail. Other subjects have no encoding issue, this one does.
This issue, if I’m reading this right https://github.com/PHPMailer/PHPMailer/issues/1949 is that your the subject is more than 65 characters long
Thanks for chasing that down, @hube2; I came to the same conclusion very late last night and didn’t get around to coming back here to post.
