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
76.798 76.915	59.444 58.159	15.641 16.629	1.713 2.127

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 (%)
77.40 % 75.61 %	20.37 % 21.62 %	2.23 % 2.77 %

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	6023 6114	4621 4603	1271 1336	131 175	76.72 % 75.29 %	21.10 % 21.85 %	2.17 % 2.86 %
Elektronics	5836 5727	4530 4319	1176 1237	130 171	77.62 % 75.41 %	20.15 % 21.60 %	2.23 % 2.99 %
Entertainment	5800 5928	4456 4505	1225 1263	119 160	76.83 % 76.00 %	21.12 % 21.31 %	2.05 % 2.70 %
Cosmetics & Beauty	5908 5686	4597 4333	1184 1202	127 151	77.81 % 76.20 %	20.04 % 21.14 %	2.15 % 2.66 %
Food & Drink	5933 6029	4555 4542	1256 1310	122 177	76.77 % 75.34 %	21.17 % 21.73 %	2.06 % 2.94 %
Home & Garden	6024 5919	4641 4427	1249 1327	134 165	77.04 % 74.79 %	20.73 % 22.42 %	2.22 % 2.79 %
Finance	6100 5822	4945 4623	1013 1048	142 151	81.07 % 79.41 %	16.61 % 18.00 %	2.33 % 2.59 %
Health	6121 5742	4955 4494	1027 1093	139 155	80.95 % 78.27 %	16.78 % 19.04 %	2.27 % 2.70 %
Pets	6016 5837	4606 4411	1275 1270	135 156	76.56 % 75.57 %	21.19 % 21.76 %	2.24 % 2.67 %
Sport & Fitness	5696 5959	4426 4485	1145 1305	125 169	77.70 % 75.26 %	20.10 % 21.90 %	2.19 % 2.84 %
Job & Career	5828 5969	4344 4390	1351 1414	133 165	74.54 % 73.55 %	23.18 % 23.69 %	2.28 % 2.76 %
Dating	5816 6086	4275 4336	1409 1589	132 161	73.50 % 71.25 %	24.23 % 26.11 %	2.27 % 2.65 %
Other	5697 6097	4493 4691	1060 1235	144 171	78.87 % 76.94 %	18.61 % 20.26 %	2.53 % 2.80 %

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	5291 5594	3899 4047	1274 1389	118 158	73.69 % 72.35 %	24.08 % 24.83 %	2.23 % 2.82 %
Outlook Mail	5439 5617	4102 4164	1216 1300	121 153	75.42 % 74.13 %	22.36 % 23.14 %	2.22 % 2.72 %
Yahoo Mail	5571 5486	4230 4073	1222 1257	119 156	75.93 % 74.24 %	21.94 % 22.91 %	2.14 % 2.84 %
AOL Mail	5502 5505	4233 4127	1137 1232	132 146	76.94 % 74.97 %	20.67 % 22.38 %	2.40 % 2.65 %
Mail.com	5715 5447	4517 4168	1074 1131	124 148	79.04 % 76.52 %	18.79 % 20.76 %	2.17 % 2.72 %
Yandex Mail	5557 5546	4241 4197	1193 1215	123 134	76.32 % 75.68 %	21.47 % 21.91 %	2.21 % 2.42 %
GMX Mail	5337 5485	4004 4068	1212 1275	121 142	75.02 % 74.17 %	22.71 % 23.25 %	2.27 % 2.59 %
Zoho Mail	5427 5364	4225 4118	1085 1094	117 152	77.85 % 76.77 %	19.99 % 20.40 %	2.16 % 2.83 %
ProtonMail	5458 5613	4373 4375	975 1078	110 160	80.12 % 77.94 %	17.86 % 19.21 %	2.02 % 2.85 %
Custom Mail	5333 5239	4300 4086	914 999	119 154	80.63 % 77.99 %	17.14 % 19.07 %	2.23 % 2.94 %
iCloud Mail	5380 5587	3973 3997	1279 1429	128 161	73.85 % 71.54 %	23.77 % 25.58 %	2.38 % 2.88 %
Tuta	5717 5710	4544 4463	1046 1082	127 165	79.48 % 78.16 %	18.30 % 18.95 %	2.22 % 2.89 %
Juno.com	5712 5302	4540 4078	1033 1076	139 148	79.48 % 76.91 %	18.08 % 20.29 %	2.43 % 2.79 %
Mailfence	5359 5420	4263 4198	981 1072	115 150	79.55 % 77.45 %	18.31 % 19.78 %	2.15 % 2.77 %

Compare Postmark with other providers

Compare the email deliverability of Postmark with other providers.