When brands send marketing email

Across the 25,056 brands listed here, 8% of marketing emails arrive in the 10 AM hour Eastern. Tuesday is the busiest day, with 16%.

Every hour of the week

Each square is one hour of one day. The darker it is, the more emails arrived in it.

Emails by weekday and hour, US Eastern
	12a	1a	2a	3a	4a	5a	6a	7a	8a	9a	10a	11a	12p	1p	2p	3p	4p	5p	6p	7p	8p	9p	10p	11p
Mon	4167	4365	5342	6332	6981	7172	7428	8348	11711	15265	16484	15879	15556	12686	10595	9186	8398	8444	9499	9783	8491	6666	5204	4190
Tue	5217	6128	6511	7662	8023	8728	9031	9720	14413	18064	20200	19154	17890	15136	13054	10655	9154	9394	10561	11034	9946	7623	6127	5626
Wed	5344	5174	6227	7738	8167	7837	8511	9415	12684	16524	18555	17651	17432	14691	12741	10927	9399	10080	10663	10961	9603	7562	5999	4888
Thu	5128	5441	6833	7987	9228	9044	8139	9324	13281	17214	20057	18746	17834	15473	12962	10362	9193	9470	10489	11074	9357	7257	5824	4619
Fri	5097	5219	6333	7541	8023	7738	8699	9756	14022	18026	19935	19652	18939	14914	12385	10554	9236	9220	10374	9480	7817	5954	4703	4033
Sat	4351	4305	5105	6721	7071	6933	6915	7463	11132	15103	15455	13389	12041	8924	7498	6201	6161	6692	6969	6703	6178	4921	4030	3521
Sun	3955	4356	5926	7918	8443	8056	6844	7268	10427	14235	14712	13545	12930	10757	9779	7643	6556	6854	8327	8659	7269	5438	4344	3643

Emails by hour and weekday, US Eastern
	Mon	Tue	Wed	Thu	Fri	Sat	Sun
12a	4167	5217	5344	5128	5097	4351	3955
1a	4365	6128	5174	5441	5219	4305	4356
2a	5342	6511	6227	6833	6333	5105	5926
3a	6332	7662	7738	7987	7541	6721	7918
4a	6981	8023	8167	9228	8023	7071	8443
5a	7172	8728	7837	9044	7738	6933	8056
6a	7428	9031	8511	8139	8699	6915	6844
7a	8348	9720	9415	9324	9756	7463	7268
8a	11711	14413	12684	13281	14022	11132	10427
9a	15265	18064	16524	17214	18026	15103	14235
10a	16484	20200	18555	20057	19935	15455	14712
11a	15879	19154	17651	18746	19652	13389	13545
12p	15556	17890	17432	17834	18939	12041	12930
1p	12686	15136	14691	15473	14914	8924	10757
2p	10595	13054	12741	12962	12385	7498	9779
3p	9186	10655	10927	10362	10554	6201	7643
4p	8398	9154	9399	9193	9236	6161	6556
5p	8444	9394	10080	9470	9220	6692	6854
6p	9499	10561	10663	10489	10374	6969	8327
7p	9783	11034	10961	11074	9480	6703	8659
8p	8491	9946	9603	9357	7817	6178	7269
9p	6666	7623	7562	7257	5954	4921	5438
10p	5204	6127	5999	5824	4703	4030	4344
11p	4190	5626	4888	4619	4033	3521	3643

FewerMore(busiest cell: 20,200 emails)

Based on 1,609,648 emails from 25,056 listed brands, received from Jan 23 to Oct 29, 2026. Times in US Eastern. How we collect

By day of the week

Day	Share of emails	Emails	Busiest day for
Monday	14%	218,172	3,575 brands
Tuesday	16%	259,051	5,495 brands
Wednesday	15%	248,773	4,321 brands
Thursday	16%	254,336	4,080 brands
Friday	15%	247,650	3,942 brands
Saturday	11%	183,782	1,529 brands
Sunday	12%	197,884	2,114 brands

By hour of the day

Hour (Eastern)	Share of emails	Emails	Busiest hour for
12 AM	2%	33,259	413 brands
1 AM	2%	34,988	419 brands
2 AM	3%	42,277	616 brands
3 AM	3%	51,899	804 brands
4 AM	3%	55,936	954 brands
5 AM	3%	55,508	905 brands
6 AM	3%	55,567	838 brands
7 AM	4%	61,294	917 brands
8 AM	5%	87,670	1,482 brands
9 AM	7%	114,431	2,188 brands
10 AM	8%	125,398	2,671 brands
11 AM	7%	118,016	2,254 brands
12 PM	7%	112,622	2,047 brands
1 PM	6%	92,581	1,489 brands
2 PM	5%	79,014	1,154 brands
3 PM	4%	65,528	792 brands
4 PM	4%	58,097	687 brands
5 PM	4%	60,154	718 brands
6 PM	4%	66,882	908 brands
7 PM	4%	67,694	950 brands
8 PM	4%	58,661	785 brands
9 PM	3%	45,421	471 brands
10 PM	2%	36,231	349 brands
11 PM	2%	30,520	245 brands

These figures cover the brands listed on They Sent It, not every brand. "Busiest for" counts the brands that send more on that day, or in that hour, than on any other. Every brand's own grid is on its page: browse brands. Last updated Oct 29, 2026.