[Plugin: Contact Form 7] Sent and worked before, now not working.

I’m not sure what happened. I successfully got it to work…I received the email last night, and it was fast actually.

Now I’m messing with it and when I try to email myself again, it sends successfully on the form, but I never get the email.

When I say “messing with it”, I don’t think I changed anything that would be different from when it worked yesterday. Maybe I did???

What do you think is up? I used it on my other site (different host though)