Yesterday I accidentally deleted my pixiv account, is there anyway I can recover it?
-Thanks
Sorry to give you bad news, but as far as I know there's no way to recover your account after it is deleted.
It says so in the Pixiv's FAQ:
NOTE: After closing your account, all your user data will be deleted.
That, I don't know. You can try and see how it goes, though.
if it allows same email then its definitely gone. there's 1% chance it's still in the system for a while though and therefore won't let you register it again. attempt contacting admins?