I dunno... not a whole lot of course, but I just think going after the underlying issue is a better route than trying to make educated guesses. The underlying issue is Gmail ignores "."s in it's email addresses... so it would be best if we did the same thing to find duplicate emails.
This isn't a necessarily for spam. Think of it like a proxy. You have members who are constantly trying to circumvent a ban or suspension. By registering with a temporary email, they can constantly change their email with a simple click. This way, they have to register for an email. Also why would you want to waste your time on someone who does not even want to give you a long lasting email ID? When you go to send out an email communication later, guess what will happen? You are going to get a hard bounce. Every hard bounced email you send lowers your emailing reputation causing a bigger problem at hand.
0clickemail.com
noclickemail.com
10minutemail.com
bofthew.com
jnxjn.com
klzlk.com
nepwk.com
nwldx.com
owlpic.com
pjjkp.com
prtnx.com
rmqkr.net
rppkn.com
rtrtr.com
tyldd.com
uggsrock.com
10minutemail.net
zoaxe.com
12houremail.com
12minutemail.com
1pad.de
akapost.com
anon-mail.de
anonbox.net
anonmails.de
anonymbox.com
antispam.de
antispam24.de
antispammail.de
b2cmail.de
breakthru.com
bspamfree.org
bugmenot.com
bumpymail.com
byom.de
cam4you.cc
centermail.com
centermail.net
deadaddress.com
despammed.com
dispostable.com
dodgeit.com
dodgit.com
dontsendmespam.de
dotman.de
dudmail.com
dump-email.info
dumpmail.de
e4ward.com
easytrashmail.com
edv.to
eintagsmail.de
emailgo.de
emailias.com
emailsensei.com
emailtemporanea.com
emailtemporanea.net
eyepaste.com
fakeinbox.com
fakemail.fr
armyspy.com
dayrep.com
teleworm.us
filzmail.com
frapmail.com
garbagemail.org
garliclife.com
7tags.com
broadbandninja.com
cellurl.com
dealja.com
getairmail.com
moburl.com
tagyourself.com
vidchart.com
getmails.eu
consumerriot.com
getonemail.com
gishpuppy.com
nurfuerspam.de
guerillamail.org
guerrillamail.net
guerrillamail.biz
guerrillamail.com
guerrillamail.de
guerrillamail.info
guerrillamail.org
sharklasers.com
spam4.me
guerrillamailblock.com
haltospam.com
hidemail.de
bootybay.de
ieh-mail.de
plexolan.de
incognitomail.com
incognitomail.net
incognitomail.org
instant-mail.de
sinnlos-mail.de
wegwerf-email-adressen.de
wegwerf-emails.de
ip6.li
irish2me.com
jetable.com
jetable.net
jetable.org
junk.to
kasmail.com
keepmymail.com
lhsdv.com
lifebyfood.com
lr78.com
luckymail.org
card.zp.ua
express.net.ua
infocom.zp.ua
mail.zp.ua
mycard.net.ua
delikkt.de
m21.cc
mail21.cc
mysamp.de
mail4trash.com
mailcatch.com
mailbiz.biz
mailde.de
mailde.info
mailms.com
mailorg.org
mailtv.net
mailtv.tv
ministry-of-silly-walks.de
maileater.com
maileimer.de
mailexpire.com
mailforspam.com
binkmail.com
bobmail.info
chogmail.com
devnullmail.com
mailin8r.com
mailinater.com
mailinator.com
mailinator.net
mailinator2.com
safetymail.info
slopsbox.com
sogetthis.com
spamherelots.com
SpamHerePlease.com
suremail.info
thisisnotmyrealemail.com
tradermail.info
veryrealemail.com
zippymail.info
mailita.tk
mailme24.com
mailnesia.com
mailnull.com
mailshell.com
mailtome.de
mailtrash.net
makemetheking.com
mbx.cc
meltmail.com
messagebeamer.de
mintemail.com
mytempmail.com
mailmetrash.com
mt2009.com
mytrashmail.com
thankyou2010.com
trash2009.com
trashymail.com
nervmich.net
nervtmich.net
wegwerfadresse.de
netzidiot.de
no-spam.ws
nospam4.us
nospamfor.us
nospammail.net
nowmymail.com
obobbo.com
ohaaa.de
blackmarket.to
omail.pro
thc.st
vpn.st
oneoffemail.com
oneoffmail.com
onlatedotcom.info
otherinbox.com
pookmail.com
privacy.net
privatdemail.net
fansworldwide.de
privy-mail.de
privymail.de
trashmailer.com
put2.net
quickinbox.com
realtyalerts.ca
mailseal.de
receiveee.com
safersignup.de
safetypost.de
schafmail.de
schmeissweg.tk
schrott-email.de
secretemail.de
lolfreak.net
secure-mail.biz
secure-mail.cc
z1p.biz
SendSpamHere.com
senseless-entertainment.com
is.af
server.ms
us.af
shieldemail.com
sneakemail.com
sofort-mail.de
sofortmail.de
soodonims.com
spam.la
spam.su
spamail.de
spamavert.com
spambob.com
0815.ru
3d-painting.com
agedmail.com
ano-mail.net
bio-muesli.info
bio-muesli.net
brennendesreich.de
buffemail.com
bund.us
cust.in
dbunker.com
discardmail.com
discardmail.de
duskmail.com
emaillime.com
ero-tube.org
film-blog.biz
flyspam.com
fr33mail.info
geschent.biz
great-host.in
hochsitze.com
hulapla.de
imails.info
kulturbetrieb.info
m4ilweb.info
misterpinball.de
mypartyclip.de
nomail2me.com
nospamthanks.info
politikerclub.de
recode.me
s0ny.net
sandelf.de
spambog.com
spambog.de
spambog.ru
superstachel.de
teewars.org
thanksnospam.info
watch-harry-potter.com
watchfull.net
webm4il.info
spambox.us
spamcero.com
spamcorptastic.com
spamex.com
spamfree.eu
spamfree24.com
spamfree24.de
spamfree24.info
spamfree24.org
antichef.net
spamgourmet.com
spamhole.com
spaminator.de
spaml.de
spammotel.com
spamobox.com
spamspot.com
SpamThisPlease.com
spamtrail.com
cheatmail.de
fivemail.de
giantmail.de
nevermail.de
sneakmail.de
spoofmail.de
stuffmail.de
trialmail.de
squizzy.de
stinkefinger.net
super-auswahl.de
teleworm.com
temp-mail.org
llogin.ru
odnorazovoe.ru
temp-mail.ru
tempail.com
tempemail.co.za
tempemail.net
beefmilk.com
dingbone.com
fudgerub.com
lookugly.com
smellfear.com
tempinbox.com
tempmailer.com
tempmailer.de
tempomail.fr
temporarily.de
temporaryemail.net
temporaryinbox.com
temporarymailaddress.com
thismail.net
tittbit.in
topranklist.de
trash-mail.com
trash-mail.de
trashdevil.com
trashdevil.de
trashemail.de
trashmail.com
trashmail.de
kurzepost.de
objectmail.com
proxymail.eu
punkass.com
rcpt.at
trash-mail.at
trashmail.at
trashmail.me
trashmail.net
wegwerfmail.de
wegwerfmail.net
wegwerfmail.org
trashmail.ws
twinmail.de
163.com
2prong.com
8127ep.com
antireg.ru
asdasd.ru
bugmenever.com
despam.it
disposeamail.com
dontreg.com
einmalmail.de
fakedemail.com
hmamail.com
humaility.com
ignoremail.com
lawlita.com
losemymail.com
mailscrap.com
nabuma.com
nobugmail.com
nobuma.com
spamday.com
spamkill.info
spaml.com
tilien.com
trashinbox.com
wegwerf-email.de
yxzx.net
wasteland.rfc822.org
weg-werf-email.de
wegwerf-email.net
wegwerfemail.com
wegwerfemail.de
cuvox.de
einrot.com
wh4f.org
willhackforfood.biz
whyspam.me
wolfsmail.tk
cool.fr.nf
courriel.fr.nf
jetable.fr.nf
mega.zik.dj
moncourrier.fr.nf
monemail.fr.nf
monmail.fr.nf
nomail.xl.cx
nospam.ze.tc
speed.1s.fr
yopmail.com
yopmail.fr
yopmail.net
youmailr.com
zehnminuten.de
zehnminutenmail.de
You have to do it by hand. Sorry.
I did it using SQL INSERT INTO... Don't mess with it unless you know what you're doing
