They Sent It

Brands that send with Mailchimp

4,399 of the 44,139 brands listed here send through Mailchimp. A typical one sends about 2 emails a week, most often on Thursday around 9 AM Eastern.

Brands listed
4,399
Emails collected
116,473
Emails a week
about 2 for the typical brand (all listed brands: about 3)
Busiest day
Thursday, for the most brands
Busiest hour
9 AM Eastern, for the most brands

Brands sending with Mailchimp

Latest emailBrandESPWebsite popularityEmails a weekBusiest dayLast sent
OJ Wheelsojwheels.comMailchimpabout 2ThursdayOct 22, 2026Mailchimp · about 2 a week · busiest Thursday · last sent Oct 22, 2026
OK Renewable Energy Councilokrenewableenergycouncil.orgMailchimpabout 2TuesdayOct 22, 2026Mailchimp · about 2 a week · busiest Tuesday · last sent Oct 22, 2026
Ola Duboisoladubois.caMailchimpabout 1WednesdayOct 27, 2026Mailchimp · about 1 a week · busiest Wednesday · last sent Oct 27, 2026
Old Down Estateolddownestate.co.ukMailchimpabout 1TuesdayOct 17, 2026Mailchimp · about 1 a week · busiest Tuesday · last sent Oct 17, 2026
Old House Treesoldhousetrees.comMailchimpabout 1FridayOct 30, 2026Mailchimp · about 1 a week · busiest Friday · last sent Oct 30, 2026
Old Sod Travel Collectionoldsodtravel.comMailchimpabout 1ThursdayOct 26, 2026Mailchimp · about 1 a week · busiest Thursday · last sent Oct 26, 2026
Old Soul Co.oldsoulco.comMailchimpabout 1FridayOct 30, 2026Mailchimp · about 1 a week · busiest Friday · last sent Oct 30, 2026
Old Spokes Homeoldspokeshome.comMailchimpabout 2ThursdayOct 19, 2026Mailchimp · about 2 a week · busiest Thursday · last sent Oct 19, 2026
Old Stagecoach Innoldstagecoach.com · 5 emails since September 2026MailchimpOct 22, 2026Mailchimp
Oldenburg Franciscan Centeroldenburgfranciscancenter.orgMailchimpabout 2MondayNov 1, 2026Mailchimp · about 2 a week · busiest Monday · last sent Nov 1, 2026
Olive Connectionoliveconnection.comMailchimpabout 1ThursdayOct 30, 2026Mailchimp · about 1 a week · busiest Thursday · last sent Oct 30, 2026
Oliviers&Cooliviersandco.comMailchimpabout 5SundayNov 1, 2026Mailchimp · about 5 a week · busiest Sunday · last sent Nov 1, 2026
Olympic Paintsolympicpaints.co.zaMailchimpabout 1WednesdayOct 30, 2026Mailchimp · about 1 a week · busiest Wednesday · last sent Oct 30, 2026
Om Beingombeing.co.ukMailchimpabout 1WednesdayOct 13, 2026Mailchimp · about 1 a week · busiest Wednesday · last sent Oct 13, 2026
Ombarombar.co.ukMailchimpabout 3SaturdayOct 31, 2026Mailchimp · about 3 a week · busiest Saturday · last sent Oct 31, 2026
OMNIA Nightclubomnianightclub.com · 4 emails since October 2026MailchimpOct 21, 2026Mailchimp
OMSIomsi.edu · Top 1 million sitesMailchimpTop 1 million sitesabout 1TuesdayOct 27, 2026Mailchimp · about 1 a week · busiest Tuesday · last sent Oct 27, 2026
OmVed Gardensomvedgardens.comMailchimpabout 1ThursdayNov 2, 2026Mailchimp · about 1 a week · busiest Thursday · last sent Nov 2, 2026
On My Feetonmyfeet.org.au · 5 emails since July 2026MailchimpOct 27, 2026Mailchimp
On The Docketonthedocket.orgMailchimpabout 1MondayOct 30, 2026Mailchimp · about 1 a week · busiest Monday · last sent Oct 30, 2026
ONAonabags.proMailchimpabout 2TuesdayNov 2, 2026Mailchimp · about 2 a week · busiest Tuesday · last sent Nov 2, 2026
Ondas Communityondascommunity.comMailchimpabout 1WednesdayNov 2, 2026Mailchimp · about 1 a week · busiest Wednesday · last sent Nov 2, 2026
One And Onlytheoneandonlydesignersale.comMailchimpabout 2FridayNov 2, 2026Mailchimp · about 2 a week · busiest Friday · last sent Nov 2, 2026
One For The Kidsoneforthekids.orgMailchimpabout 1SaturdayNov 1, 2026Mailchimp · about 1 a week · busiest Saturday · last sent Nov 1, 2026
One Mahurangionemahurangi.co.nzMailchimpabout 1WednesdayOct 21, 2026Mailchimp · about 1 a week · busiest Wednesday · last sent Oct 21, 2026
One Mother to Anotheronemothertoanother.org.nzMailchimpabout 2TuesdayOct 26, 2026Mailchimp · about 2 a week · busiest Tuesday · last sent Oct 26, 2026
Oneonesixoneonesix.nzMailchimpabout 2ThursdayOct 23, 2026Mailchimp · about 2 a week · busiest Thursday · last sent Oct 23, 2026
Onething Designonething.designMailchimpabout 2TuesdayOct 14, 2026Mailchimp · about 2 a week · busiest Tuesday · last sent Oct 14, 2026
Online Cigarsonline-cigars.com · Top 1 million sitesMailchimpTop 1 million sitesabout 2MondayNov 2, 2026Mailchimp · about 2 a week · busiest Monday · last sent Nov 2, 2026
Only Thing Travelonlythingtravel.comMailchimpabout 3FridayOct 30, 2026Mailchimp · about 3 a week · busiest Friday · last sent Oct 30, 2026
Ontario Trails Council/Conseil des Sentiers de l'Ontarioontariotrails.caMailchimpabout 2MondayNov 2, 2026Mailchimp · about 2 a week · busiest Monday · last sent Nov 2, 2026
ONWA Marineonwamarine.comMailchimpabout 2SundayOct 29, 2026Mailchimp · about 2 a week · busiest Sunday · last sent Oct 29, 2026
Oojo Flightoojo.com · Top 1 million sitesMailchimpTop 1 million sitesabout 3MondayOct 31, 2026Mailchimp · about 3 a week · busiest Monday · last sent Oct 31, 2026
Oona & Maeoona-mae.nlMailchimpabout 1SaturdayOct 10, 2026Mailchimp · about 1 a week · busiest Saturday · last sent Oct 10, 2026
opderschmelzopderschmelz.luMailchimpabout 1ThursdayOct 30, 2026Mailchimp · about 1 a week · busiest Thursday · last sent Oct 30, 2026
Open Canadaopencanada.orgMailchimpabout 1SaturdayOct 31, 2026Mailchimp · about 1 a week · busiest Saturday · last sent Oct 31, 2026
Open Doors Reviewopendoorsreview.comMailchimpabout 4MondayOct 22, 2026Mailchimp · about 4 a week · busiest Monday · last sent Oct 22, 2026
Open Gardens Canberraopengardenscanberra.org.auMailchimpabout 1TuesdayOct 27, 2026Mailchimp · about 1 a week · busiest Tuesday · last sent Oct 27, 2026
Open Hearts Sanctuaryopenheartssanctuary.comMailchimpabout 1SaturdayOct 31, 2026Mailchimp · about 1 a week · busiest Saturday · last sent Oct 31, 2026
Open Studiosopenstudiosberlin.comMailchimpabout 1ThursdayOct 29, 2026Mailchimp · about 1 a week · busiest Thursday · last sent Oct 29, 2026
OpenNewsopennews.orgMailchimpabout 1WednesdayOct 23, 2026Mailchimp · about 1 a week · busiest Wednesday · last sent Oct 23, 2026
Opera Atelieroperaatelier.comMailchimpabout 3TuesdayOct 24, 2026Mailchimp · about 3 a week · busiest Tuesday · last sent Oct 24, 2026
Operation SPLASHoperationsplash.orgMailchimpabout 1ThursdayOct 30, 2026Mailchimp · about 1 a week · busiest Thursday · last sent Oct 30, 2026
Opportunity Now SVopportunitynowsv.orgMailchimpabout 6TuesdayNov 2, 2026Mailchimp · about 6 a week · busiest Tuesday · last sent Nov 2, 2026
OpticsStock.comopticsstock.comMailchimpabout 4MondayNov 2, 2026Mailchimp · about 4 a week · busiest Monday · last sent Nov 2, 2026
Opulent Jewelersopulentjewelers.comMailchimpabout 3FridayOct 10, 2026Mailchimp · about 3 a week · busiest Friday · last sent Oct 10, 2026
Opus 48opus48choir.co.ukMailchimpabout 1SundayNov 1, 2026Mailchimp · about 1 a week · busiest Sunday · last sent Nov 1, 2026
Opustoneopustone.comMailchimpabout 1TuesdayOct 27, 2026Mailchimp · about 1 a week · busiest Tuesday · last sent Oct 27, 2026
Ordway Center for Performing Artsordway.orgMailchimpabout 1TuesdayOct 27, 2026Mailchimp · about 1 a week · busiest Tuesday · last sent Oct 27, 2026
Oregonalbanyoregon.govMailchimpabout 2MondayNov 2, 2026Mailchimp · about 2 a week · busiest Monday · last sent Nov 2, 2026

Counts cover the brands listed on They Sent It, not every brand that uses Mailchimp. A brand's ESP is confirmed from its own emails. "Typical" is the middle brand, shown from three brands up. Times in US Eastern. How we collect · Last updated Nov 3, 2026

Get the Black Friday insights

We're collecting every Black Friday email from more than 41,000 brands as it lands. Get what we find: who starts first, the biggest discounts, and the subject lines that stand out.

Free. You'll get a confirmation email first, and you can unsubscribe anytime.