My boyfriend still has old dating profiles, should I be concerned?

My boyfriend still has old dating profiles. They seem to be inactive but he constantly gets messages and emails on his phone from them and from other women. I use his phone because I broke mine so I constantly see them. I've talked to him about it and we've argued. He says they're just old accounts, but he still gets messages on those accounts. He says he doesn't know how to delete the accounts. I've been trying to let it go but evey time he gets a new message or email, I get curious, suspicious and insecure. Could anyone give me any advice? I'm really confused. I've been lied to and cheated on in the past. And even manipulated and used. So you would see why this would be hard for me to ignore but I love him. It's the best relationship I've ever been in, and the longest. His family is like family to me. And mine is like family to him. Do I have reason to not trust him? Or is it just baggage from the past scarring me?
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He's on a dating site called cheaters.. That freaked me out
My boyfriend still has old dating profiles, should I be concerned?
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