Mass messaging, when referring to a dating site like Plenty Of Fish or OKCupid, involves the practice of using a system that is automated or semi automated, that allows for the rapid sending of a high volume of first messages to other singles on these dating sites. The purpose of this is increase the number of replies you get. Reply ratio is a big problem for many guys on dating sites and using some sort of mass messaging system saves time and helps you find more women interested in you, faster.

The biggest hurdle to overcome with mass messaging is to not let the dating sites know you are employing mass messaging. The reason dating sites don't like this, is not because they don't want you to be successful at dating, but mass messaging is usually done with some sort of automated, non-human bot and bots can't click ads and this is a huge source of revenue for sites like Plenty Of Fish that ...