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
65.170 66.036	50.776 49.737	13.059 14.491	1.335 1.808

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 (%)
77.91 % 75.32 %	20.04 % 21.94 %	2.05 % 2.74 %

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	5054 5214	3909 3908	1048 1158	97 148	77.34 % 74.95 %	20.74 % 22.21 %	1.92 % 2.84 %
Elektronics	4865 4850	3784 3642	983 1071	98 137	77.78 % 75.09 %	20.21 % 22.08 %	2.01 % 2.82 %
Entertainment	4883 5119	3811 3884	967 1102	105 133	78.05 % 75.87 %	19.80 % 21.53 %	2.15 % 2.60 %
Cosmetics & Beauty	5003 4924	3922 3722	985 1074	96 128	78.39 % 75.59 %	19.69 % 21.81 %	1.92 % 2.60 %
Food & Drink	5094 5217	3918 3868	1077 1204	99 145	76.91 % 74.14 %	21.14 % 23.08 %	1.94 % 2.78 %
Home & Garden	5052 5102	3925 3787	1016 1175	111 140	77.69 % 74.23 %	20.11 % 23.03 %	2.20 % 2.74 %
Finance	5254 5016	4268 3975	882 910	104 131	81.23 % 79.25 %	16.79 % 18.14 %	1.98 % 2.61 %
Health	4946 5061	4022 3985	816 942	108 134	81.32 % 78.74 %	16.50 % 18.61 %	2.18 % 2.65 %
Pets	5085 4986	3940 3735	1041 1118	104 133	77.48 % 74.91 %	20.47 % 22.42 %	2.05 % 2.67 %
Sport & Fitness	5081 5033	3966 3800	1018 1091	97 142	78.06 % 75.50 %	20.04 % 21.68 %	1.91 % 2.82 %
Job & Career	4957 5166	3705 3782	1146 1241	106 143	74.74 % 73.21 %	23.12 % 24.02 %	2.14 % 2.77 %
Dating	4950 5130	3655 3669	1198 1321	97 140	73.84 % 71.52 %	24.20 % 25.75 %	1.96 % 2.73 %
Other	4946 5218	3951 3980	882 1084	113 154	79.88 % 76.27 %	17.83 % 20.77 %	2.28 % 2.95 %

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	4513 4899	3341 3520	1083 1243	89 136	74.03 % 71.85 %	24.00 % 25.37 %	1.97 % 2.78 %
Outlook Mail	4625 4615	3521 3424	1012 1064	92 127	76.13 % 74.19 %	21.88 % 23.06 %	1.99 % 2.75 %
Yahoo Mail	4521 4657	3465 3468	960 1056	96 133	76.64 % 74.47 %	21.23 % 22.68 %	2.12 % 2.86 %
AOL Mail	4776 4765	3694 3549	980 1089	102 127	77.35 % 74.48 %	20.52 % 22.85 %	2.14 % 2.67 %
Mail.com	4943 4684	3946 3584	900 978	97 122	79.83 % 76.52 %	18.21 % 20.88 %	1.96 % 2.60 %
Yandex Mail	4742 4694	3626 3508	1017 1065	99 121	76.47 % 74.73 %	21.45 % 22.69 %	2.09 % 2.58 %
GMX Mail	4579 4692	3454 3470	1030 1095	95 127	75.43 % 73.96 %	22.49 % 23.34 %	2.07 % 2.71 %
Zoho Mail	4664 4739	3665 3596	905 1013	94 130	78.58 % 75.88 %	19.40 % 21.38 %	2.02 % 2.74 %
ProtonMail	4584 4851	3702 3774	793 943	89 134	80.76 % 77.80 %	17.30 % 19.44 %	1.94 % 2.76 %
Custom Mail	4579 4470	3710 3477	766 874	103 119	81.02 % 77.79 %	16.73 % 19.55 %	2.25 % 2.66 %
iCloud Mail	4644 4787	3451 3429	1095 1219	98 139	74.31 % 71.63 %	23.58 % 25.46 %	2.11 % 2.90 %
Tuta	4740 4825	3800 3728	842 960	98 137	80.17 % 77.26 %	17.76 % 19.90 %	2.07 % 2.84 %
Juno.com	4891 4597	3897 3525	893 942	101 130	79.68 % 76.68 %	18.26 % 20.49 %	2.07 % 2.83 %
Mailfence	4369 4761	3504 3685	783 950	82 126	80.20 % 77.40 %	17.92 % 19.95 %	1.88 % 2.65 %

Compare Postmark with other providers

Compare the email deliverability of Postmark with other providers.