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
64.919 66.041	50.483 49.987	13.108 14.393	1.328 1.661

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 (%)
77.76 % 75.69 %	20.19 % 21.79 %	2.05 % 2.52 %

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	4961 5176	3834 3891	1029 1157	98 128	77.28 % 75.17 %	20.74 % 22.35 %	1.98 % 2.47 %
Elektronics	4886 4959	3792 3758	995 1073	99 128	77.61 % 75.78 %	20.36 % 21.64 %	2.03 % 2.58 %
Entertainment	5077 5013	3911 3809	1056 1089	110 115	77.03 % 75.98 %	20.80 % 21.72 %	2.17 % 2.29 %
Cosmetics & Beauty	4939 5082	3857 3884	987 1083	95 115	78.09 % 76.43 %	19.98 % 21.31 %	1.92 % 2.26 %
Food & Drink	5041 5138	3880 3866	1060 1142	101 130	76.97 % 75.24 %	21.03 % 22.23 %	2.00 % 2.53 %
Home & Garden	4911 5077	3830 3810	976 1135	105 132	77.99 % 75.04 %	19.87 % 22.36 %	2.14 % 2.60 %
Finance	5187 5091	4202 4065	882 896	103 130	81.01 % 79.85 %	17.00 % 17.60 %	1.99 % 2.55 %
Health	4990 5068	4089 4017	799 926	102 125	81.94 % 79.26 %	16.01 % 18.27 %	2.04 % 2.47 %
Pets	5064 5058	3908 3791	1048 1140	108 127	77.17 % 74.95 %	20.70 % 22.54 %	2.13 % 2.51 %
Sport & Fitness	4964 5116	3838 3846	1030 1137	96 133	77.32 % 75.18 %	20.75 % 22.22 %	1.93 % 2.60 %
Job & Career	4917 5150	3695 3767	1123 1254	99 129	75.15 % 73.15 %	22.84 % 24.35 %	2.01 % 2.50 %
Dating	4963 5017	3653 3560	1210 1324	100 133	73.60 % 70.96 %	24.38 % 26.39 %	2.01 % 2.65 %
Other	5019 5096	3994 3923	913 1037	112 136	79.58 % 76.98 %	18.19 % 20.35 %	2.23 % 2.67 %

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	4490 4870	3294 3514	1111 1235	85 121	73.36 % 72.16 %	24.74 % 25.36 %	1.89 % 2.48 %
Outlook Mail	4554 4676	3450 3471	1009 1085	95 120	75.76 % 74.23 %	22.16 % 23.20 %	2.09 % 2.57 %
Yahoo Mail	4733 4648	3613 3511	1022 1016	98 121	76.34 % 75.54 %	21.59 % 21.86 %	2.07 % 2.60 %
AOL Mail	4753 4816	3652 3634	1003 1067	98 115	76.84 % 75.46 %	21.10 % 22.16 %	2.06 % 2.39 %
Mail.com	4829 4564	3857 3498	871 956	101 110	79.87 % 76.64 %	18.04 % 20.95 %	2.09 % 2.41 %
Yandex Mail	4621 4786	3537 3583	990 1090	94 113	76.54 % 74.86 %	21.42 % 22.77 %	2.03 % 2.36 %
GMX Mail	4662 4640	3517 3440	1045 1080	100 120	75.44 % 74.14 %	22.42 % 23.28 %	2.15 % 2.59 %
Zoho Mail	4636 4693	3676 3563	865 1013	95 117	79.29 % 75.92 %	18.66 % 21.59 %	2.05 % 2.49 %
ProtonMail	4513 4856	3599 3783	831 951	83 122	79.75 % 77.90 %	18.41 % 19.58 %	1.84 % 2.51 %
Custom Mail	4622 4542	3768 3565	751 868	103 109	81.52 % 78.49 %	16.25 % 19.11 %	2.23 % 2.40 %
iCloud Mail	4550 4782	3366 3421	1091 1231	93 130	73.98 % 71.54 %	23.98 % 25.74 %	2.04 % 2.72 %
Tuta	4689 4850	3755 3751	835 968	99 131	80.08 % 77.34 %	17.81 % 19.96 %	2.11 % 2.70 %
Juno.com	4771 4636	3796 3609	880 908	95 119	79.56 % 77.85 %	18.44 % 19.59 %	1.99 % 2.57 %
Mailfence	4496 4682	3603 3644	804 925	89 113	80.14 % 77.83 %	17.88 % 19.76 %	1.98 % 2.41 %

Compare Postmark with other providers

Compare the email deliverability of Postmark with other providers.