Inbox Monitor's feature, Inbox Optimizer, checks for the following link shorteners within the content, including popular shortening services such as bit.ly, tinyurl.com, and goo.gl.
Note: Although long, the list is sorted first numerically, then alphabetically.
0rz.tw
1link.in
1url.com
2.gp
2big.at
2tu.us
3.ly
307.to
4ms.me
4sq.com
4url.cc
6url.com
7.ly
a.gg
a.nf
aa.cx
abcurl.net
ad.vu
adf.ly
adjix.com
afx.cc
all.fuseurl.com
alturl.com
amzn.to
ar.gy
arst.ch
atu.ca
azc.cc
b23.ru
b2l.me
bacn.me
bcool.bz
binged.it
bit.ly
bizj.us
bloat.me
bravo.ly
bsa.ly
budurl.com
canurl.com
chilp.it
chzb.gr
cl.lk
cl.ly
clck.ru
cli.gs
cliccami.info
clickthru.ca
clop.in
conta.cc
cort.as
cot.ag
crks.me
ctvr.us
cutt.us
dai.ly
decenturl.com
dfl8.me
digbig.com
digg.com
disq.us
dld.bz
dlvr.it
do.my
doiop.com
dopen.us
easyuri.com
easyurl.net
eepurl.com
eweri.com
fa.by
fav.me
fb.me
fbshare.me
ff.im
fff.to
fire.to
firsturl.de
firsturl.net
flic.kr
flq.us
fly2.ws
fon.gs
freak.to
fuseurl.com
fuzzy.to
fwd4.me
fwib.net
gizmo.do
gl.am
go.9nl.com
go.ign.com
go.usa.gov
goo.gl
goshrink.com
gurl.es
hex.io
hiderefer.com
hmm.ph
href.in
hsblinks.com
htxt.it
huff.to
hurl.me
hurl.ws
idek.net
ilix.in
is.gd
its.my
ix.lt
j.mp
jijr.com
kl.am
klck.me
korta.nu
krunchd.com
l9k.net
lat.ms
liip.to
liltext.com
linkbee.com
linkbun.ch
liurl.cn
lnk.gd
lnk.ms
lnkd.in
lnkurl.com
ln-s.net
ln-s.ru
lru.jp
lt.tl
lurl.no
macte.ch
mash.to
merky.de
migre.me
miniurl.com
minurl.fr
mke.me
moby.to
moourl.com
mrte.ch
myloc.me
myurl.in
n.pr
nbc.co
nblo.gs
nn.nf
not.my
notlong.com
nsfw.in
nutshellurl.com
nxy.in
nyti.ms
oc1.us
om.ly
omf.gd
omoikane.net
on.mktw.net
onforb.es
orz.se
ow.ly
o-x.fr
ping.fm
pli.gs
pnt.me
politi.co
post.ly
pp.gg
profile.to
ptiturl.com
pub.vitrue.com
qlnk.net
qte.me
qu.tc
qy.fi
r.im
rb6.me
read.bi
readthis.ca
reallytinyurl.com
redir.ec
redirects.ca
redirx.com
retwt.me
ri.ms
rickroll.it
riz.gd
rt.nu
ru.ly
rubyurl.com
rurl.org
rww.tw
s4c.in
s7y.us
safe.mn
sameurl.com
sdut.us
shar.es
shink.de
shorl.com
short.ie
short.to
shortlinks.co.uk
shorturl.com
shout.to
show.my
shrinkify.com
shrinkr.com
shrt.fr
shrt.st
shrten.com
shrunkin.com
simurl.com
slate.me
smallr.com
smsh.me
smurl.name
sn.im
snipr.com
snipurl.com
snurl.com
sp2.ro
spedr.com
srnk.net
srs.li
starturl.com
su.pr
surl.co.uk
surl.hu
t.cn
t.co
t.lh.com
ta.gd
tbd.ly
tcrn.ch
tgr.me
tgr.ph
tighturl.com
tiniuri.com
tiny.cc
tiny.ly
tiny.pl
tinylink.in
tinyuri.ca
tinyurl.com
tl.gd
tmi.me
tnij.org
tnw.to
tny.com
to.ly
togoto.us
totc.us
toysr.us
tpm.ly
tr.im
tra.kz
trunc.it
twhub.com
twirl.at
twitclicks.com
twitterurl.net
twitterurl.org
twiturl.de
twurl.cc
twurl.nl
u.mavrev.com
u.nu
u76.org
ub0.cc
ulu.lu
updating.me
ur1.ca
url.az
url.co.uk
url.ie
url360.me
url4.eu
urlborg.com
urlbrief.com
urlcover.com
urlcut.com
urlenco.de
urli.nl
urls.im
urlshorteningservicefortwitter.com
urlx.ie
urlzen.com
usat.ly
use.my
vb.ly
vgn.am
vl.am
vm.lc
w55.de
wapo.st
wapurl.co.uk
wipi.es
wp.me
x.vu
xr.com
xrl.in
xrl.us
xurl.es
xurl.jp
y.ahoo.it
yatuc.com
ye.pe
yep.it
yfrog.com
yhoo.it
yiyd.com
youtu.be
yuarel.com
z0p.de
zi.ma
zi.mu
zipmyurl.com
zud.me
zurl.ws
zz.gd
zzang.kr