Sent multiple photos from my iphone 4S to my email and they're not showing up?

I attached about four photos and sent them about an hour ago to my email but they're nowhere to be found. I just tested sending one photo and it worked almost instantly.

Are they just lost? Do you think they'll show up? I'm using my Wi-Fi for internet not my data so shouldn't this be quicker?

Check the spam folder too.

Maybe the file size is too large to send. Send one at a time.