> ... over the past few months there has been a marked increase in malicious, phishous and outright spammy email being blasted out via Sendgrid’s servers.

Fortunately, I hadn't noticed the recent increases.

After it became apparent that they didn't bother looking ibto -- or even reading -- abuse reports, we blacklisted basically their entire IP ranges a long time ago and then added exceptions when they were requested.

I certainly did notice the marked decrease in spam then, though.