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
77.364 76.796	60.340 58.531	15.418 16.313	1.606 1.952

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 (%)
77.99 % 76.22 %	19.93 % 21.24 %	2.08 % 2.54 %

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	6125 6096	4737 4639	1265 1298	123 159	77.34 % 76.10 %	20.65 % 21.29 %	2.01 % 2.61 %
Elektronics	5829 5759	4554 4393	1152 1211	123 155	78.13 % 76.28 %	19.76 % 21.03 %	2.11 % 2.69 %
Entertainment	5939 5912	4607 4526	1218 1239	114 147	77.57 % 76.56 %	20.51 % 20.96 %	1.92 % 2.49 %
Cosmetics & Beauty	5972 5686	4699 4358	1157 1187	116 141	78.68 % 76.64 %	19.37 % 20.88 %	1.94 % 2.48 %
Food & Drink	5914 5971	4591 4533	1211 1272	112 166	77.63 % 75.92 %	20.48 % 21.30 %	1.89 % 2.78 %
Home & Garden	6083 5924	4729 4444	1227 1327	127 153	77.74 % 75.02 %	20.17 % 22.40 %	2.09 % 2.58 %
Finance	5980 5801	4887 4612	957 1048	136 141	81.72 % 79.50 %	16.00 % 18.07 %	2.27 % 2.43 %
Health	6023 5676	4892 4496	1009 1041	122 139	81.22 % 79.21 %	16.75 % 18.34 %	2.03 % 2.45 %
Pets	6058 5863	4677 4473	1257 1244	124 146	77.20 % 76.29 %	20.75 % 21.22 %	2.05 % 2.49 %
Sport & Fitness	5761 5981	4496 4518	1142 1311	123 152	78.04 % 75.54 %	19.82 % 21.92 %	2.14 % 2.54 %
Job & Career	5954 5911	4491 4393	1339 1366	124 152	75.43 % 74.32 %	22.49 % 23.11 %	2.08 % 2.57 %
Dating	5963 6055	4403 4357	1436 1553	124 145	73.84 % 71.96 %	24.08 % 25.65 %	2.08 % 2.39 %
Other	5763 6161	4577 4789	1048 1216	138 156	79.42 % 77.73 %	18.18 % 19.74 %	2.39 % 2.53 %

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	5361 5507	3973 4008	1270 1360	118 139	74.11 % 72.78 %	23.69 % 24.70 %	2.20 % 2.52 %
Outlook Mail	5479 5624	4166 4190	1206 1294	107 140	76.04 % 74.50 %	22.01 % 23.01 %	1.95 % 2.49 %
Yahoo Mail	5570 5392	4261 4028	1199 1222	110 142	76.50 % 74.70 %	21.53 % 22.66 %	1.97 % 2.63 %
AOL Mail	5446 5396	4213 4057	1110 1210	123 129	77.36 % 75.19 %	20.38 % 22.42 %	2.26 % 2.39 %
Mail.com	5653 5505	4514 4255	1027 1113	112 137	79.85 % 77.29 %	18.17 % 20.22 %	1.98 % 2.49 %
Yandex Mail	5609 5633	4327 4298	1168 1205	114 130	77.14 % 76.30 %	20.82 % 21.39 %	2.03 % 2.31 %
GMX Mail	5412 5505	4097 4118	1202 1255	113 132	75.70 % 74.80 %	22.21 % 22.80 %	2.09 % 2.40 %
Zoho Mail	5461 5405	4290 4188	1060 1074	111 143	78.56 % 77.48 %	19.41 % 19.87 %	2.03 % 2.65 %
ProtonMail	5591 5571	4497 4377	986 1049	108 145	80.43 % 78.57 %	17.64 % 18.83 %	1.93 % 2.60 %
Custom Mail	5358 5241	4335 4131	915 966	108 144	80.91 % 78.82 %	17.08 % 18.43 %	2.02 % 2.75 %
iCloud Mail	5528 5680	4107 4096	1298 1434	123 150	74.29 % 72.11 %	23.48 % 25.25 %	2.23 % 2.64 %
Tuta	5765 5624	4608 4448	1039 1024	118 152	79.93 % 79.09 %	18.02 % 18.21 %	2.05 % 2.70 %
Juno.com	5695 5360	4582 4161	982 1066	131 133	80.46 % 77.63 %	17.24 % 19.89 %	2.30 % 2.48 %
Mailfence	5436 5353	4370 4176	956 1041	110 136	80.39 % 78.01 %	17.59 % 19.45 %	2.02 % 2.54 %

Compare Postmark with other providers

Compare the email deliverability of Postmark with other providers.