Reminds me of back in the late nineties I developed a freeware email client. The client header in the send emails said "???mail by www.example.com" I tought it

Reminds me of back in the late nineties I developed a freeware email client. The client header in the send emails said "???mail by www.example.com" I tought it might give me more users... What it gave me was lots of angry emails once someone used my mail client to send out spam. That header was gone pretty quickly.