Your link is from over 10 years ago. I can't find any newer information on it persisting. Perhaps they turned it off after they got caught? Or perhaps it was an outage or some thing and not actual filtering? I don't know.
All email providers have issues now and again.
I'm not saying they aren't doing it, but if they are, nobody seems to be complaining or upset about it except those few in that forum from over a decade ago.
All email providers have issues now and again.
I'm not saying they aren't doing it, but if they are, nobody seems to be complaining or upset about it except those few in that forum from over a decade ago.