since the beginning of April we have an issue with our emails not displaying properly (just garbled up code is displayed) for patrons who have icloud.com/mac.com/me.com email addresses. The issue seems to only arise when the email is viewed via the app as the emails display fine on MAC when viewed via the browser. Patrons who experience the issue seem to be on IOS version 12.3.1. They don't have this issue with emails from other senders. Below is an example of what the email looks like that the patrons receive. We haven't changed our email code, sender address or anything else that would explain this issue.