Hi guys,
I was talking with a buyer of postal history via email.
He request to pay with paypal and I have refused, sending the following short message:
*(translated) I don't have Paypal. I accept payment with crypto (bitcoin / ethereum / litecoin etc).
Guess What? The email has been rejected by GMAIL!
"Message blocked because it contains content identified as spam."
have you ever seen something like this?
I don't understand what you were trying to sell, so be honest, but it's sad that the message was outright rejected by gmail I've just tried sending a message from my gmail address to another gmail address of my friend, mentioning Bitcoin as payment, and the message was delivered successfully. Then I did the same by sending a message to another address of this friend, but we didn't communicate through this address before, and the message was also delivered without issues...
However, I did receive some messages like "please send me 0.1 BTC to unlock 1 BTC" and they went straight to spam. I think that in your case, it was just a mistake the system made.