I realize you are talking about people here in general, but I can't see our county sending much of anything by email. They are on the trailing edge of technology. In fact I wonder sometimes if they have any technology.
Our county definitely not.
The county to our west is using a similar service to MailChimp as is the county slightly north and west.
I can't elaborate further, but they are.
The most interesting part of working with county level folks is how utterly computer illiterate most counties are. It's 2016, and we're up to Windows 10... You'd think a file upload wouldn't be rocket science. But it is.
And standard security practices common in the late 90s everywhere else -- aren't being used in some of our state's largest counties. They don't even realize that standards exist, most of the time.
The sad part is, they're so far behind, almost all of them, that no IT tech would bother trying to get hired to fix it, even out of pity. This is stuff kids do in their basements now, and not something anyone would want on a resume. So it's a self-fulfilling problem.
You and I both know a City level person (well, you probably met him once anyway) who's got his city's stuff really up to snuff, but he's a pilot -- so of course he's paying attention to details on the standard security checklists. Heh.
(He's hinted numerous times at me that he needs more staff. Nooooooo thanks. Bad pay, nobody can get fired if they're even non-maliciously destructive to systems and hardware through lack of care in their work, equal bennies to everywhere else, pension plans for those positions are a thing of the past, etc. There's little compelling reason to do it near a metro. Maybe if you were WAY rural and were a computer nerd living in the middle of nowhere...)