Postmark and Amazon SES Email Deliverability Comparison

Postmark

Amazon SES

In this comparison, the deliverability of Postmark and Amazon SES is compared in detail. All available data, taking the filters into account, is used for the comparison.

Email deliverability

This comparison compares the numbers for sent emails, you can also see in which folder the emails at the email service provider ended up and how many emails were lost on the way. The numbers look better for Postmark than for Amazon SES.

Emails Sent	Emails Inbox	Emails Spam	Emails Lost
76.208 77.005	59.446 58.115	15.216 16.752	1.546 2.138

Email deliverability rates

The following table shows the most important deliverability rates (in percent) for the compared providers. The higher the inbox rate and the lower the spam rate, the better. Postmark beats Amazon SES in this comparison.

Inbox (%)	Spam (%)	Lost (%)
78.00 % 75.47 %	19.97 % 21.75 %	2.03 % 2.78 %

Email deliverability by category

This comparison compares the deliverability taking into account the category or the industry. The deliverability can vary greatly depending on the industry. In this comparison, Postmark is the clear winner.

Category	Emails Sent	Emails Inbox	Emails Spam	Emails Lost	Inbox (%)	Spam (%)	Lost (%)
Clothing	5962 6185	4609 4653	1237 1353	116 179	77.31 % 75.23 %	20.75 % 21.88 %	1.95 % 2.89 %
Elektronics	5746 5641	4487 4262	1135 1208	124 171	78.09 % 75.55 %	19.75 % 21.41 %	2.16 % 3.03 %
Entertainment	5767 5966	4475 4517	1177 1290	115 159	77.60 % 75.71 %	20.41 % 21.62 %	1.99 % 2.67 %
Cosmetics & Beauty	5867 5704	4599 4340	1151 1214	117 150	78.39 % 76.09 %	19.62 % 21.28 %	1.99 % 2.63 %
Food & Drink	5848 6036	4519 4522	1222 1336	107 178	77.27 % 74.92 %	20.90 % 22.13 %	1.83 % 2.95 %
Home & Garden	5964 5952	4638 4433	1204 1355	122 164	77.77 % 74.48 %	20.19 % 22.77 %	2.05 % 2.76 %
Finance	6130 5847	4988 4638	1017 1058	125 151	81.37 % 79.32 %	16.59 % 18.09 %	2.04 % 2.58 %
Health	5936 5799	4850 4532	963 1110	123 157	81.70 % 78.15 %	16.22 % 19.14 %	2.07 % 2.71 %
Pets	6013 5771	4653 4334	1238 1284	122 153	77.38 % 75.10 %	20.59 % 22.25 %	2.03 % 2.65 %
Sport & Fitness	5783 5974	4507 4502	1161 1302	115 170	77.94 % 75.36 %	20.08 % 21.79 %	1.99 % 2.85 %
Job & Career	5694 5898	4272 4328	1306 1403	116 167	75.03 % 73.38 %	22.94 % 23.79 %	2.04 % 2.83 %
Dating	5757 6064	4271 4326	1375 1578	111 160	74.19 % 71.34 %	23.88 % 26.02 %	1.93 % 2.64 %
Other	5741 6168	4578 4728	1030 1261	133 179	79.74 % 76.65 %	17.94 % 20.44 %	2.32 % 2.90 %

Email deliverability by email service provider

Finally, the following table compares the deliverability taking into account the email service provider. Similar to the industry, also the email service provider can affect the email deliverability in both directions — positive or negative. In this comparison, Postmark is better than Amazon SES.

Provider	Emails Sent	Emails Inbox	Emails Spam	Emails Lost	Inbox (%)	Spam (%)	Lost (%)
Gmail	5221 5714	3883 4156	1236 1400	102 158	74.37 % 72.73 %	23.67 % 24.50 %	1.95 % 2.77 %
Outlook Mail	5281 5494	4016 4066	1158 1273	107 155	76.05 % 74.01 %	21.93 % 23.17 %	2.03 % 2.82 %
Yahoo Mail	5483 5514	4202 4084	1170 1272	111 158	76.64 % 74.07 %	21.34 % 23.07 %	2.02 % 2.87 %
AOL Mail	5582 5520	4329 4135	1136 1240	117 145	77.55 % 74.91 %	20.35 % 22.46 %	2.10 % 2.63 %
Mail.com	5748 5466	4587 4168	1051 1150	110 148	79.80 % 76.25 %	18.28 % 21.04 %	1.91 % 2.71 %
Yandex Mail	5529 5488	4238 4136	1173 1215	118 137	76.65 % 75.36 %	21.22 % 22.14 %	2.13 % 2.50 %
GMX Mail	5207 5433	3936 4019	1164 1266	107 148	75.59 % 73.97 %	22.35 % 23.30 %	2.05 % 2.72 %
Zoho Mail	5432 5493	4256 4196	1070 1142	106 155	78.35 % 76.39 %	19.70 % 20.79 %	1.95 % 2.82 %
ProtonMail	5417 5582	4360 4346	958 1080	99 156	80.49 % 77.86 %	17.69 % 19.35 %	1.83 % 2.79 %
Custom Mail	5335 5204	4329 4064	889 991	117 149	81.14 % 78.09 %	16.66 % 19.04 %	2.19 % 2.86 %
iCloud Mail	5272 5619	3941 4011	1219 1444	112 164	74.75 % 71.38 %	23.12 % 25.70 %	2.12 % 2.92 %
Tuta	5623 5664	4510 4405	999 1097	114 162	80.21 % 77.77 %	17.77 % 19.37 %	2.03 % 2.86 %
Juno.com	5731 5290	4578 4060	1029 1079	124 151	79.88 % 76.75 %	17.95 % 20.40 %	2.16 % 2.85 %
Mailfence	5347 5524	4281 4269	964 1103	102 152	80.06 % 77.28 %	18.03 % 19.97 %	1.91 % 2.75 %

Compare Postmark with other providers

Compare the email deliverability of Postmark with other providers.