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
77.301 76.660	59.644 58.836	15.881 15.978	1.776 1.846

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 (%)
77.16 % 76.75 %	20.54 % 20.84 %	2.30 % 2.41 %

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	6223 5917	4769 4510	1314 1258	140 149	76.64 % 76.22 %	21.12 % 21.26 %	2.25 % 2.52 %
Elektronics	5871 5909	4570 4546	1167 1212	134 151	77.84 % 76.93 %	19.88 % 20.51 %	2.28 % 2.56 %
Entertainment	5960 5926	4591 4538	1247 1244	122 144	77.03 % 76.58 %	20.92 % 20.99 %	2.05 % 2.43 %
Cosmetics & Beauty	5909 5802	4594 4486	1189 1178	126 138	77.75 % 77.32 %	20.12 % 20.30 %	2.13 % 2.38 %
Food & Drink	5893 5980	4518 4579	1249 1243	126 158	76.67 % 76.57 %	21.19 % 20.79 %	2.14 % 2.64 %
Home & Garden	6020 5907	4626 4456	1255 1308	139 143	76.84 % 75.44 %	20.85 % 22.14 %	2.31 % 2.42 %
Finance	5866 5841	4707 4672	1016 1038	143 131	80.24 % 79.99 %	17.32 % 17.77 %	2.44 % 2.24 %
Health	6028 5657	4852 4508	1041 1017	135 132	80.49 % 79.69 %	17.27 % 17.98 %	2.24 % 2.33 %
Pets	6083 5830	4634 4460	1310 1235	139 135	76.18 % 76.50 %	21.54 % 21.18 %	2.29 % 2.32 %
Sport & Fitness	5716 5961	4412 4542	1165 1278	139 141	77.19 % 76.20 %	20.38 % 21.44 %	2.43 % 2.37 %
Job & Career	5918 5839	4407 4386	1369 1313	142 140	74.47 % 75.12 %	23.13 % 22.49 %	2.40 % 2.40 %
Dating	5907 6056	4330 4410	1439 1508	138 138	73.30 % 72.82 %	24.36 % 24.90 %	2.34 % 2.28 %
Other	5907 6035	4634 4743	1120 1146	153 146	78.45 % 78.59 %	18.96 % 18.99 %	2.59 % 2.42 %

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	5360 5467	3949 4008	1278 1328	133 131	73.68 % 73.31 %	23.84 % 24.29 %	2.48 % 2.40 %
Outlook Mail	5461 5577	4108 4175	1232 1269	121 133	75.22 % 74.86 %	22.56 % 22.75 %	2.22 % 2.38 %
Yahoo Mail	5550 5411	4209 4091	1223 1187	118 133	75.84 % 75.61 %	22.04 % 21.94 %	2.13 % 2.46 %
AOL Mail	5429 5339	4148 4038	1153 1181	128 120	76.40 % 75.63 %	21.24 % 22.12 %	2.36 % 2.25 %
Mail.com	5528 5498	4361 4270	1042 1102	125 126	78.89 % 77.66 %	18.85 % 20.04 %	2.26 % 2.29 %
Yandex Mail	5569 5591	4255 4294	1192 1173	122 124	76.41 % 76.80 %	21.40 % 20.98 %	2.19 % 2.22 %
GMX Mail	5418 5506	4051 4150	1244 1231	123 125	74.77 % 75.37 %	22.96 % 22.36 %	2.27 % 2.27 %
Zoho Mail	5521 5437	4308 4246	1088 1058	125 133	78.03 % 78.09 %	19.71 % 19.46 %	2.26 % 2.45 %
ProtonMail	5639 5602	4482 4433	1032 1028	125 141	79.48 % 79.13 %	18.30 % 18.35 %	2.22 % 2.52 %
Custom Mail	5386 5239	4313 4162	957 939	116 138	80.08 % 79.44 %	17.77 % 17.92 %	2.15 % 2.63 %
iCloud Mail	5534 5718	4043 4161	1354 1415	137 142	73.06 % 72.77 %	24.47 % 24.75 %	2.48 % 2.48 %
Tuta	5675 5482	4483 4357	1062 983	130 142	79.00 % 79.48 %	18.71 % 17.93 %	2.29 % 2.59 %
Juno.com	5728 5379	4584 4209	998 1042	146 128	80.03 % 78.25 %	17.42 % 19.37 %	2.55 % 2.38 %
Mailfence	5503 5414	4350 4242	1026 1042	127 130	79.05 % 78.35 %	18.64 % 19.25 %	2.31 % 2.40 %

Compare Postmark with other providers

Compare the email deliverability of Postmark with other providers.