Automated messaging for tech companies.
Customer.io is the 11th most popular marketing ESP we track.
Detected by 322 distinct extension users.
Distribution of brands using Customer.io by industry. Helps you gauge whether this ESP is popular with businesses similar to yours. Brands tagged in two industries are counted in both.
Based on 240 of 253 brands tagged (95% coverage). Industries assigned automatically using AI; not every brand is tagged yet.
Where this ESP's emails land in Gmail. Each brand counted once (average of per-brand percentages) so a single high-volume sender can't dominate. Spam placement is mostly driven by the sender (list quality, content, complaint rate). This number reflects both the ESP's infrastructure AND the kind of senders who choose it — not just deliverability quality.
By volume: inbox 4,831 · promotions 332 · spam 14 (5,177 emails observed)
Percentages are averaged per brand (each counted once) across 119 brands using Customer.io with at least 5 placement observations each.
Underlying transactional infrastructure Customer.io routes through, detected from the sender hostname (PTR record) on each email's Received header. Bigger sample → more accurate.
Amazon SES
2 of 253 brands
205 as their primary ESP, the rest send transactional or secondary email through it. Primary users are listed first, then secondary.
| Brand | Role | Obs | Spam | Last seen |
|---|---|---|---|---|
|
Mixpanel
mixpanel.com
|
primary | 39 | 0.0% | 2026-06-25 |
|
Notion
notion.so
|
primary | 42 | 0.0% | 2026-06-28 |
|
Posthog
posthog.com
|
primary | 12 | 0.0% | 2026-06-24 |
|
Polymarket
polymarket.com
|
primary | 9 | 0.0% | 2026-06-25 |
|
Quillbot
quillbot.com
|
primary | 4 | 0.0% | 2026-06-24 |
|
Buffer
buffer.com
|
primary | 7 | 0.0% | 2026-06-29 |
|
Cursor
cursor.com
|
primary | 13 | 0.0% | 2026-06-29 |
|
Lovable
lovable.dev
|
primary | 72 | 0.0% | 2026-06-30 |
|
Railway
railway.app
|
primary | 16 | 0.0% | 2026-06-29 |
|
Immowelt
immowelt.de
|
primary | 1 | — | 2026-05-18 |
|
Make
make.com
|
primary | 28 | 0.0% | 2026-06-30 |
|
Use
use.ai
|
primary | 6 | 0.0% | 2026-06-16 |
|
Angi
angi.com
|
primary | 5 | 0.0% | 2026-05-21 |
|
Neon
neon.tech
|
primary | 10 | 0.0% | 2026-06-26 |
|
N8n
n8n.io
|
primary | 33 | 0.0% | 2026-06-24 |
|
Gitbook
gitbook.com
|
primary | 6 | 0.0% | 2026-06-26 |
|
Apollo
apollo.io
|
primary | 81 | 1.2% | 2026-06-26 |
|
Higgsfield
higgsfield.ai
|
primary | 6 | 0.0% | 2026-06-23 |
|
Openrouter
openrouter.ai
|
primary | 6 | 0.0% | 2026-06-17 |
|
Ifttt
ifttt.com
|
primary | 4 | 0.0% | 2026-06-24 |
|
Weglot
weglot.com
|
primary | 1 | — | 2026-06-16 |
|
Gtmetrix
gtmetrix.com
|
primary | 1 | — | 2026-05-06 |
|
Tryfi
tryfi.com
|
primary | 1 | — | 2026-06-15 |
|
Vidiq
vidiq.com
|
primary | 17 | 0.0% | 2026-06-25 |
|
Scribehow
scribehow.com
|
primary | 7 | 0.0% | 2026-06-18 |
|
Kalshi
kalshi.com
|
primary | 6 | 0.0% | 2026-06-25 |
|
Cloudways
cloudways.com
|
primary | 22 | 0.0% | 2026-06-24 |
|
Heygen
heygen.com
|
primary | 30 | 0.0% | 2026-06-22 |
|
Emcd
emcd.io
|
primary | 1 | — | 2026-05-07 |
|
Superwall
superwall.com
|
primary | 1 | — | 2026-05-05 |
|
23andme
23andme.com
|
primary | 4 | 0.0% | 2026-06-09 |
|
Lemonade
lemonade.com
|
primary | 2 | — | 2026-06-26 |
|
Docsity
docsity.com
|
primary | 1 | — | 2026-05-14 |
|
Optisigns
optisigns.com
|
primary | 3 | 0.0% | 2026-06-25 |
|
Wisestamp
wisestamp.com
|
primary | 5 | 0.0% | 2026-06-15 |
|
Rescuetime
rescuetime.com
|
primary | 1 | — | 2026-06-18 |
|
Stonly
stonly.com
|
primary | 4 | 0.0% | 2026-06-11 |
|
Pitch
pitch.com
|
primary | 1 | — | 2026-04-28 |
|
Realpython
realpython.com
|
primary | 1 | — | 2026-06-14 |
|
Rebrandly
rebrandly.com
|
primary | 32 | 0.0% | 2026-06-30 |
|
Philippineairlines
philippineairlines.com
|
primary | 2 | — | 2026-07-01 |
|
Prezly
prezly.com
|
primary | 1 | — | 2026-05-13 |
|
Hunter
hunter.io
|
primary | 27 | 3.7% | 2026-06-30 |
|
Weworkremotely
weworkremotely.com
|
primary | 1 | — | 2026-06-15 |
|
Riverside
riverside.fm
|
primary | 9 | 0.0% | 2026-06-30 |
|
Pdfguru
pdfguru.com
|
primary | 3 | 0.0% | 2026-06-22 |
|
Wyzant
wyzant.com
|
primary | 1 | — | 2026-06-26 |
|
Theliven
theliven.com
|
primary | 17 | 0.0% | 2026-05-15 |
|
Novu
novu.co
|
primary | 1 | — | 2026-05-05 |
|
Hint
hint.app
|
primary | 1 | — | 2026-05-25 |
|
Daily
daily.dev
|
primary | 4 | 0.0% | 2026-06-24 |
|
Madmuscles
madmuscles.com
|
primary | 5 | 0.0% | 2026-06-23 |
|
Uphold
uphold.com
|
primary | 1 | — | 2026-06-19 |
|
Kittl
kittl.com
|
primary | 2 | — | 2026-06-22 |
|
Omr
omr.com
|
primary | 19 | 0.0% | 2026-06-22 |
|
Georgiaaquarium
georgiaaquarium.org
|
primary | 3 | 0.0% | 2026-06-23 |
|
Cxl
cxl.com
|
primary | 8 | 0.0% | 2026-06-09 |
|
Thebestpdf
thebestpdf.com
|
primary | 2 | — | 2026-06-17 |
|
Lemlist
lemlist.com
|
primary | 7 | 0.0% | 2026-06-26 |
|
Puck
puck.news
|
primary | 1 | — | 2026-05-15 |
|
Pdfleader
pdfleader.com
|
primary | 2 | — | 2026-06-16 |
|
Tldv
tldv.io
|
primary | 26 | 0.0% | 2026-06-29 |
|
Default
default.com
|
primary | 1 | — | 2026-05-27 |
|
Doublegood
doublegood.com
|
primary | 3 | 0.0% | 2026-06-29 |
|
Pagaleve
pagaleve.com.br
|
primary | 1 | — | 2026-06-30 |
|
Gostudent
gostudent.org
|
primary | 1 | — | 2026-06-01 |
|
Senja
senja.io
|
primary | 32 | 0.0% | 2026-06-29 |
|
Zendocs
zendocs.com
|
primary | 1 | — | 2026-05-11 |
|
Scoreapp
scoreapp.com
|
primary | 22 | 0.0% | 2026-06-24 |
|
Sudowrite
sudowrite.com
|
primary | 1 | — | 2026-05-23 |
|
Thirdbridge
thirdbridge.com
|
primary | 1 | — | 2026-06-01 |
|
Attio
attio.com
|
primary | 26 | 0.0% | 2026-06-30 |
|
Xoxoday
xoxoday.com
|
primary | 2 | — | 2026-06-04 |
|
Gelato
gelato.com
|
primary | 2 | — | 2026-05-13 |
|
Mybillie
mybillie.com
|
primary | 1 | — | 2026-05-06 |
|
Contra
contra.com
|
primary | 5 | 0.0% | 2026-06-10 |
|
Zight
zight.com
|
primary | 12 | 0.0% | 2026-06-23 |
|
Bookretreats
bookretreats.com
|
primary | 2 | — | 2026-06-21 |
|
Firecrawl
firecrawl.dev
|
primary | 4 | 0.0% | 2026-06-28 |
|
Jitter
jitter.video
|
primary | 2 | — | 2026-06-17 |
|
Beefree
beefree.io
|
primary | 33 | 0.0% | 2026-06-22 |
|
Kapa
kapa.ai
|
primary | 2 | — | 2026-06-12 |
|
Aferry
aferry.com
|
primary | 1 | — | 2026-05-26 |
|
Mobbin
mobbin.com
|
primary | 3 | 0.0% | 2026-05-27 |
|
Air
air.inc
|
primary | 3 | 0.0% | 2026-06-24 |
|
Wallstreetzen
wallstreetzen.com
|
primary | 34 | 0.0% | 2026-06-18 |
|
Gumlet
gumlet.com
|
primary | 1 | — | 2026-05-20 |
|
Maven
maven.com
|
primary | 25 | 0.0% | 2026-06-30 |
|
Alan
alan.com
|
primary | 1 | — | 2026-05-26 |
|
Sunsama
sunsama.com
|
primary | 3 | 0.0% | 2026-05-27 |
|
Brizy
brizy.io
|
primary | 1 | — | 2026-06-08 |
|
Warmy
warmy.io
|
primary | 53 | 0.0% | 2026-06-30 |
|
Airops
airops.com
|
primary | 3 | 0.0% | 2026-05-18 |
|
Dust
dust.tt
|
primary | 1 | — | 2026-05-22 |
|
Rightcapital
rightcapital.com
|
primary | 1 | — | 2026-06-25 |
|
Getquin
getquin.com
|
primary | 12 | 0.0% | 2026-06-22 |
|
Signitic
signitic.com
|
primary | 13 | 0.0% | 2026-06-26 |
|
Klar
klar.mx
|
primary | 1 | — | 2026-06-15 |
|
Fyxer
fyxer.com
|
primary | 27 | 0.0% | 2026-06-30 |
|
Delphi
delphi.ai
|
primary | 2 | — | 2026-05-20 |
|
Knocommerce
knocommerce.com
|
primary | 4 | 0.0% | 2026-06-22 |
|
Hotspawn
hotspawn.com
|
primary | 6 | 0.0% | 2026-06-26 |
|
Chartmogul
chartmogul.com
|
primary | 33 | 0.0% | 2026-06-30 |
|
Productschool
productschool.com
|
primary | 4 | 0.0% | 2026-06-26 |
|
Finalroundai
finalroundai.com
|
primary | 1 | — | 2026-06-11 |
|
Usenourish
usenourish.com
|
primary | 2 | 0.0% | 2026-05-18 |
|
Wp Umbrella
wp-umbrella.com
|
primary | 5 | 0.0% | 2026-06-18 |
|
Hume
hume.ai
|
primary | 1 | — | 2026-06-22 |
|
Numan
numan.com
|
primary | 12 | 0.0% | 2026-06-29 |
|
Indy
indy.fr
|
primary | 7 | 0.0% | 2026-06-16 |
|
Taxdown
taxdown.es
|
primary | 6 | 0.0% | 2026-06-07 |
|
Yoodli
yoodli.ai
|
primary | 1 | — | 2026-06-01 |
|
Alohacamp
alohacamp.com
|
primary | 7 | 0.0% | 2026-06-25 |
|
Getqr
getqr.com
|
primary | 6 | 0.0% | 2026-05-25 |
|
Partnerpage
partnerpage.io
|
primary | 15 | 0.0% | 2026-06-26 |
|
Jivochat
jivochat.com
|
primary | 6 | 0.0% | 2026-06-16 |
|
Nibble App
nibble-app.com
|
primary | 2 | — | 2026-06-01 |
|
Timeleft
timeleft.com
|
primary | 5 | 0.0% | 2026-06-08 |
|
Barkibu
barkibu.com
|
primary | 8 | 0.0% | 2026-06-08 |
|
Ongoody
ongoody.com
|
primary | 108 | 0.0% | 2026-06-30 |
|
Startwillow
startwillow.com
|
primary | 3 | 0.0% | 2026-06-25 |
|
Get Headway
get-headway.com
|
primary | 12 | 0.0% | 2026-06-05 |
|
Lyka
lyka.com.au
|
primary | 1 | — | 2026-06-11 |
|
Healthjoy
healthjoy.com
|
primary | 9 | 0.0% | 2026-06-22 |
|
Jgive
jgive.com
|
primary | 2 | — | 2026-05-19 |
|
Hygglo
hygglo.com
|
primary | 1 | — | 2026-05-22 |
|
Offerzen
offerzen.com
|
primary | 1 | — | 2026-06-18 |
|
Staycation
staycation.co
|
primary | 7 | 0.0% | 2026-06-26 |
|
Diggersfactory
diggersfactory.com
|
primary | 3 | 0.0% | 2026-06-25 |
|
Fxify
fxify.com
|
primary | 5 | 14% | 2026-06-29 |
|
Sacra
sacra.com
|
primary | 1 | — | 2026-05-07 |
|
Lavender
lavender.ai
|
primary | 1 | — | 2026-06-23 |
|
Pensight
pensight.com
|
primary | 1 | — | 2026-05-05 |
|
Frameo
frameo.com
|
primary | 2 | — | 2026-06-01 |
|
Peec
peec.ai
|
primary | 2 | — | 2026-06-25 |
|
Emaillove
emaillove.com
|
primary | 153 | 0.0% | 2026-06-29 |
|
Salesql
salesql.com
|
primary | 1 | — | 2026-06-18 |
|
Beconfident
beconfident.app
|
primary | 2 | — | 2026-06-16 |
|
Passionfroot
passionfroot.me
|
primary | 4 | 0.0% | 2026-05-27 |
|
Petregistrationandrecovery
petregistrationandrecovery.com
|
primary | 1 | — | 2026-06-22 |
|
Withmoxie
withmoxie.com
|
primary | 1 | — | 2026-06-03 |
|
Livespace
livespace.io
|
primary | 4 | 0.0% | 2026-06-17 |
|
Ctd
ctd.ai
|
primary | 14 | 0.0% | 2026-06-30 |
|
Airbyte
airbyte.io
|
primary | 1 | — | 2026-05-05 |
|
Slateteams
slateteams.com
|
primary | 2 | — | 2026-05-14 |
|
Productled
productled.com
|
primary | 2 | — | 2026-05-18 |
|
Jivochat
jivochat.com.br
|
primary | 1 | — | 2026-04-28 |
|
Thegistsports
thegistsports.com
|
primary | 1 | — | 2026-05-27 |
|
Wispr
wispr.ai
|
primary | 13 | 0.0% | 2026-06-26 |
|
Africatechnologyexpo
africatechnologyexpo.com
|
primary | 3 | 0.0% | 2026-06-23 |
|
Agentmail
agentmail.cc
|
primary | 3 | 0.0% | 2026-06-18 |
|
Allstarcharts
allstarcharts.com
|
primary | 19 | 0.0% | 2026-06-04 |
|
Balticmill
balticmill.com
|
primary | 3 | 0.0% | 2026-06-26 |
|
Belonghome
belonghome.com
|
primary | 16 | 0.0% | 2026-06-26 |
|
Bizscout
bizscout.com
|
primary | 2 | — | 2026-06-10 |
|
Checkmate Emails
checkmate-emails.com
|
primary | 1 | — | 2026-06-04 |
|
Claap Contact
claap-contact.com
|
primary | 3 | 0.0% | 2026-06-10 |
|
Cleverific
cleverific.com
|
primary | 1 | — | 2026-05-11 |
|
Countrysidealliance News
countrysidealliance-news.org
|
primary | 1 | — | 2026-06-18 |
|
Delcaboflowers
delcaboflowers.com
|
primary | 5 | 0.0% | 2026-06-18 |
|
Deservve
deservve.com
|
primary | 6 | 0.0% | 2026-06-29 |
|
Driva
driva.com.au
|
primary | 5 | 0.0% | 2026-06-18 |
|
Dust
dust.help
|
primary | 1 | — | 2026-06-26 |
|
Europeanlistings
europeanlistings.com
|
primary | 8 | 0.0% | 2026-06-27 |
|
Femaleinvest
femaleinvest.com
|
primary | 7 | 0.0% | 2026-06-22 |
|
Focus
focus.music
|
primary | 2 | — | 2026-06-17 |
|
Frecklecustomers
frecklecustomers.com
|
primary | 3 | 0.0% | 2026-06-27 |
|
Getcargo
getcargo.ai
|
primary | 1 | — | 2026-06-17 |
|
Getpeec
getpeec.ai
|
primary | 4 | 0.0% | 2026-06-26 |
|
Getpolar
getpolar.ai
|
primary | 1 | — | 2026-05-28 |
|
Giveme5
giveme5.ai
|
primary | 4 | 25% | 2026-05-28 |
|
Go9x
go9x.com
|
primary | 5 | 0.0% | 2026-05-27 |
|
Heynews
heynews.co
|
primary | 4 | 0.0% | 2026-05-21 |
|
Humanx
humanx.com
|
primary | 1 | — | 2026-05-20 |
|
Inhk
inhk.us
|
primary | 6 | 0.0% | 2026-06-16 |
|
Johnwasham
johnwasham.com
|
primary | 3 | 0.0% | 2026-05-18 |
|
Juicebox
juicebox.work
|
primary | 7 | 14% | 2026-05-28 |
|
Justrelate
justrelate.de
|
primary | 3 | 0.0% | 2026-05-21 |
|
Lilsnack
lilsnack.com
|
primary | 7 | 0.0% | 2026-06-01 |
|
Mattoboard
mattoboard.com
|
primary | 1 | — | 2026-06-26 |
|
Mentorpass
mentorpass.co
|
primary | 1 | — | 2026-06-09 |
|
Octopusmoney
octopusmoney.com
|
primary | 6 | 0.0% | 2026-06-29 |
|
Onlinedoctor Superdrug
onlinedoctor-superdrug.com
|
primary | 7 | 0.0% | 2026-06-29 |
|
Parcel
parcel.io
|
primary | 6 | 0.0% | 2026-06-23 |
|
Paved
paved.com
|
primary | 10 | 0.0% | 2026-06-17 |
|
Prelib
prelib.com
|
primary | 1 | — | 2026-06-30 |
|
Recoveryone
recoveryone.com
|
primary | 5 | 0.0% | 2026-06-02 |
|
Rendin
rendin.co
|
primary | 5 | 0.0% | 2026-06-30 |
|
Searchable
searchable.com
|
primary | 4 | 0.0% | 2026-06-25 |
|
Smartlead Team
smartlead-team.com
|
primary | 22 | 0.0% | 2026-06-24 |
|
Smartleadevents
smartleadevents.com
|
primary | 3 | — | 2026-05-21 |
|
Smartleadlaunches
smartleadlaunches.com
|
primary | 3 | 0.0% | 2026-06-20 |
|
Smartleadupdates
smartleadupdates.com
|
primary | 1 | — | 2026-05-19 |
|
Stockmarketmedia
stockmarketmedia.com
|
primary | 85 | 0.0% | 2026-06-25 |
|
Studyportalsmail
studyportalsmail.com
|
primary | 5 | 0.0% | 2026-06-26 |
|
Team Getdx
team-getdx.com
|
primary | 3 | 0.0% | 2026-06-12 |
|
Thegreydog
thegreydog.com
|
primary | 1 | — | 2026-06-18 |
|
Thehive
thehive.travel
|
primary | 1 | — | 2026-05-18 |
|
Theoutboundos
theoutboundos.io
|
primary | 1 | — | 2026-05-27 |
|
Trustfnd
trustfnd.com
|
primary | 4 | 0.0% | 2026-05-19 |
|
Tuks
tuks.co.za
|
primary | 1 | — | 2026-06-20 |
|
Twiva
twiva.com
|
primary | 1 | — | 2026-05-05 |
|
Voicedash
voicedash.ai
|
primary | 1 | — | 2026-05-23 |
|
Yourkaya
yourkaya.com
|
primary | 5 | 0.0% | 2026-06-14 |
|
Zeekeo
zeekeo.io
|
primary | 1 | — | 2026-05-27 |
|
Figma
figma.com
|
secondary | 49 | 0.0% | 2026-06-25 |
|
Customer
customer.io
|
secondary | 643 | 0.0% | 2026-06-30 |
|
Yotpo
yotpo.com
|
secondary | 27 | 0.0% | 2026-06-25 |
|
Malwarebytes
malwarebytes.com
|
secondary | 1 | — | 2026-05-20 |
|
Gamma
gamma.app
|
secondary | 1 | 0.0% | 2026-06-26 |
|
Judge
judge.me
|
secondary | 5 | 0.0% | 2026-06-25 |
|
Kit
kit.com
|
secondary | 3 | 0.0% | 2026-06-25 |
|
Vercel
vercel.com
|
secondary | 6 | 0.0% | 2026-06-30 |
|
Supabase
supabase.com
|
secondary | 7 | 0.0% | 2026-06-22 |
|
Beehiiv
beehiiv.com
|
secondary | 66 | 0.0% | 2026-06-26 |
|
Pipedrive
pipedrive.com
|
secondary | 6 | 0.0% | 2026-06-26 |
|
Datacamp
datacamp.com
|
secondary | 24 | 0.0% | 2026-06-30 |
|
Mailjet
mailjet.com
|
secondary | 6 | 0.0% | 2026-05-26 |
|
Usepylon
usepylon.com
|
secondary | 3 | 0.0% | 2026-06-01 |
|
Theinformation
theinformation.com
|
secondary | 5 | 0.0% | 2026-06-30 |
|
Prolific
prolific.com
|
secondary | 3 | 0.0% | 2026-05-13 |
|
Streamyard
streamyard.com
|
secondary | 2 | 0.0% | 2026-06-26 |
|
Asapp
asapp.com
|
secondary | 1 | 0.0% | 2026-05-21 |
|
Justworks
justworks.com
|
secondary | 12 | 0.0% | 2026-06-18 |
|
Chilipiper
chilipiper.com
|
secondary | 1 | 0.0% | 2026-06-02 |
|
Smartsupp
smartsupp.com
|
secondary | 3 | 0.0% | 2026-06-30 |
|
Omnisend
omnisend.com
|
secondary | 41 | 0.0% | 2026-06-24 |
|
Litmus
litmus.com
|
secondary | 1 | — | 2026-06-03 |
|
Close
close.com
|
secondary | 8 | 0.0% | 2026-06-23 |
|
Monarch
monarch.com
|
secondary | 6 | 0.0% | 2026-06-17 |
|
Qonto
qonto.com
|
secondary | 2 | 0.0% | 2026-06-17 |
|
Republic
republic.com
|
secondary | 1 | 0.0% | 2026-06-16 |
|
Reallygoodemails
reallygoodemails.com
|
secondary | 17 | 0.9% | 2026-06-26 |
|
Fromdoppler
fromdoppler.com
|
secondary | 2 | 0.0% | 2026-06-25 |
|
Perk
perk.com
|
secondary | 1 | 0.0% | 2026-06-16 |
|
Validity
validity.com
|
secondary | 2 | 0.0% | 2026-06-19 |
|
Agentmail
agentmail.to
|
secondary | 1 | — | 2026-06-18 |
|
Smartemailing
smartemailing.cz
|
secondary | 2 | 25% | 2026-06-26 |
|
Spotdraft
spotdraft.com
|
secondary | 1 | — | 2026-06-29 |
|
Keboola
keboola.com
|
secondary | 13 | 0.0% | 2026-06-25 |
|
Goget
goget.com.au
|
secondary | 2 | 0.0% | 2026-06-26 |
|
Grey
grey.co
|
secondary | 5 | 0.0% | 2026-06-01 |
|
Week
week.pl
|
secondary | 8 | 0.0% | 2026-06-09 |
|
Hypefury
hypefury.com
|
secondary | 1 | 0.0% | 2026-05-25 |
|
Alignedup
alignedup.com
|
secondary | 5 | 0.0% | 2026-06-16 |
|
Cremedelacreme
cremedelacreme.io
|
secondary | 1 | — | 2026-05-13 |
|
Emailexpert
emailexpert.org
|
secondary | 2 | 0.0% | 2026-06-28 |
|
Emaillabs
emaillabs.pl
|
secondary | 1 | 0.0% | 2026-06-25 |
|
Flowium
flowium.com
|
secondary | 28 | 0.0% | 2026-06-29 |
|
Inboxmonster
inboxmonster.com
|
secondary | 9 | 0.0% | 2026-06-25 |
|
Laborai
laborai.es
|
secondary | 1 | 0.0% | 2026-05-26 |
|
Messageflow
messageflow.com
|
secondary | 3 | 0.0% | 2026-06-30 |
|
Tabella
tabella.app
|
secondary | 1 | 3.3% | 2026-06-09 |
IPs we've observed sending via Customer.io. "Brands" = distinct brands seen on each IP; "Placement" = where those emails landed in Gmail (inbox / promotions / spam). Click "reputation" to check the IP on Cisco Talos.
| IP | Hostname | Brands | Obs | Placement | Reputation |
|---|---|---|---|---|---|
| 159.112.243.54 | v554.v5be21903.use4.send.mailgun.net |
9 | 69 | 8 | Check → |
| 143.55.227.66 | v566.v54f91261.use4.send.mailgun.net |
1 | 43 | 1 | Check → |
| 161.38.193.2 | v52.v56f0a4e3.use4.send.mailgun.net |
4 | 22 | 4 | Check → |
| 198.244.52.106 | a106.a355d2fe.use4.send.mailgun.net |
1 | 18 | 1 | Check → |
| 198.244.52.3 | a3.a355d2fe.use4.send.mailgun.net |
9 | 18 | 2 | Check → |
| 69.72.44.6 | v56.v5e5d4d68.usw1.send.mailgun.net |
1 | 18 | — | Check → |
| 143.55.227.79 | v579.v54f91261.use4.send.mailgun.net |
5 | 17 | 7 | Check → |
| 161.38.193.1 | v51.v56f0a4e3.use4.send.mailgun.net |
3 | 16 | 6 | Check → |
| 141.193.32.214 | v5214.v5ed9ac7d.euw1.send.eu.mailgun.net |
5 | 16 | 8 | Check → |
| 161.38.205.175 | v5175.v5b52dc11.euw1.send.eu.mailgun.net |
3 | 15 | 3 | Check → |
| 198.244.60.95 | a95.a5d06dfa.euw1.send.eu.mailgun.net |
1 | 14 | — | Check → |
| 161.38.193.3 | v53.v56f0a4e3.use4.send.mailgun.net |
3 | 12 | — | Check → |
| 198.244.52.4 | a4.a355d2fe.use4.send.mailgun.net |
5 | 12 | 3 | Check → |
| 159.112.241.102 | v5102.v5c4dda55.use4.send.mailgun.net |
3 | 11 | 12 | Check → |
| 185.250.238.78 | v578.v5bda8fb2.euw1.send.eu.mailgun.net |
6 | 11 | 10 | Check → |
| 161.38.193.11 | v511.v56f0a4e3.use4.send.mailgun.net |
1 | 11 | 2 | Check → |
| 198.244.60.119 | a119.a5d06dfa.euw1.send.eu.mailgun.net |
1 | 10 | 2 | Check → |
| 69.72.44.2 | v52.v5e5d4d68.usw1.send.mailgun.net |
3 | 10 | 4 | Check → |
| 143.55.227.74 | v574.v54f91261.use4.send.mailgun.net |
3 | 10 | 13 | Check → |
| 161.38.193.4 | v54.v56f0a4e3.use4.send.mailgun.net |
3 | 10 | 3 | Check → |
| 143.55.233.26 | v526.v596efc78.use4.send.mailgun.net |
1 | 9 | 1 | Check → |
| 198.244.60.15 | a15.a5d06dfa.euw1.send.eu.mailgun.net |
1 | 8 | — | Check → |
| 159.112.241.115 | v5115.v5c4dda55.use4.send.mailgun.net |
3 | 8 | — | Check → |
| 161.38.196.32 | v532.v5ab752a9.usw1.send.mailgun.net |
1 | 8 | — | Check → |
| 159.135.236.104 | v5104.v51a3e4cb.usw1.send.mailgun.net |
1 | 8 | — | Check → |