[andybak]

I stopped bothering with obfuscation years ago when Gmail's spam filtering got good enough.

I presumed it was mostly a solved problem now - albeit at the cost of false positives and the occasional need to go through your spam folder.

[checkyoursudo]

Seems like spam was a much bigger problem before SPF/dkim/dmarc when you didn't have to put your own domain on the line in order to send spam. I bet authentication methods have more to do with the drop off in spam than filters do, though better filters surely helps. It seems much harder to spoof email now, and if you start blasting spam from a new domain it is just going to get dropped or blacklisted anyway.

It does majorly suck for new domains wanting to send legit email in-house though.