The easiest way to prove everything is automated, without spending a dime:
Write your profile in spanish, and all of the first mails will come in english... this tells only two things:
1. Are girls so stupid to write in english, even if they see a profile that is in their native language... and more they never write anything that has to do with your profile.
2. The mails are autogenerated, and there is no one interested in you, but the owners of this scam!