On 15 Feb 2019, at 20:45, John Cooper wrote:
What's with the skulls that MailMate displays in the return addresses
of some messages?

I've viewed the raw messages to try to figure out what prompts this
kind of display, but I only see an @ symbol.
This is something that MailMate does to help users detect @ symbols in
the name part of an address header, which is one simple pattern of email
spoofing. This blog post by Benny explains more:
https://blog.freron.com/2017/email-spoofing/
Quoting from the post:
In the most recent test release of MailMate I’ve added the following
improvement: Whenever the name part of an address header contains a @
then it’s replaced with a skull (💀). That should at least make
the user aware of simple attempts to spoof an address header.
Sherif
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