Word of Mouth, Proper SEO on your Website, Advertising in Dev Channels? Basically everything other than sending me spam. Your cost to send me spam is nearly ze

Word of Mouth, Proper SEO on your Website, Advertising in Dev Channels? Basically everything other than sending me spam. Your cost to send me spam is nearly zero while my cost to sort and read your spam is rarely zero so you will be punished harshly for sending me unrequested emails.