Well i was working on hacking op7's account creation thingy and i found the list of banned email ending, so here it is

'mailinator2.com'
'sogetthis.com'
'mailin8r.com'
'mailinator.net'
'spamherelots.com'
'thisisnotmyrealemail.com'
'mailinator.com'
'guerrillamail.com'
'tempemail.net'
'mailcatch.com'
'trashmail.net'
'zoemail.net'
'incognitomail.net'
'spamgourmet.com'
'litedrop.com'
'hidzz.com'
'pookmail.com'
'hushmail.com'
'spamavert.com'
'blockfilter.com'
'deadaddress.com'
'wh4f.org'
'spambox.us'
'mt2009.com'
'spam.la'
'tempinbox.com'
'saynotospams.com'
'makemoneytradingstocks.org'
'spamcero.com'
'spamcorptastic.com'
'20minutemail.com'
'signed-first-edition.com'
'tempemail.com'
'dumpyemail.com'
'shieldemail.com'
'dodgit.com'
'dandikmail.com'
'maileater.com'
'haltospam.com'
'nospamfor.us'
'nospam4.us'
'spamfree24.org'
'spamfree24.com'
'spamfree******'
'spamfree24.de'
'spamfree24.info'
'spamfree24.net'
'tempomail.fr'
'mint.us.to'
'skeefmail.com'
'slopsbox.com'

if your disposable email provider is not on that list, then as of 4/26 1:34 am est then your good to go