In general, I wouldn't recommend sending resumes to someone who's using a generic email account such as Gmail. Information that's contained in resumes can be used to compromise privacy, and if follow-up communications lead to disclosure of information such as social security numbers to someone who isn't a genuine employer or who doesn't protect the information carefully then that creates a risk of identity theft. I would want to be able to verify that someone is genuinely an employer who is likely to be protective of others' sensitive information before sharing my resume with that person. It's possible that this person is genuine, but I consider the use of a Gmail account here to be a warning sign.