4 ms·

There are ways that they could know. It's not terribly easy, but I think it would be ingenuous to say it is impossible. With SMTP (which could easily be part

There are ways that they could know. It's not terribly easy, but I think it would be ingenuous to say it is impossible. With SMTP (which could easily be part of the delivery of email), it's in plaintext going over the public network :-)

swiley 6y ago
Most popular mail servers encrypt smtp now, if it bothers you than you could use servers that require it.