Hi. Not really, it was a service I used in the past, nothing unusual about receiving an email from them. I tried deleting that one email, but then a few more become “problematic” for some unexplained reason (and only in em client, not in windows mail).
Curious! What type of licence do you have (Free or Pro)?
This is probably one for the developers to look at because there’s very little to go on, and the fact that some mail is getting through while others are throwing errors is really strange.
ps it might be wise to edit out your email address from the error logs you’ve supplied.