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
63.445 64.456	50.822 51.232	11.778 12.207	1.354 1.447

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 (%)
80.10 % 79.48 %	18.56 % 18.94 %	2.13 % 2.24 %

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	4784 4838	3827 3818	896 949	102 104	80.00 % 78.92 %	18.73 % 19.62 %	2.13 % 2.15 %
Elektronics	4743 5000	3808 3966	875 937	101 111	80.29 % 79.32 %	18.45 % 18.74 %	2.13 % 2.22 %
Entertainment	5083 4804	4042 3820	963 908	120 104	79.52 % 79.52 %	18.95 % 18.90 %	2.36 % 2.16 %
Cosmetics & Beauty	4728 5054	3806 4039	876 942	96 106	80.50 % 79.92 %	18.53 % 18.64 %	2.03 % 2.10 %
Food & Drink	4798 5071	3836 4017	913 974	93 117	79.95 % 79.22 %	19.03 % 19.21 %	1.94 % 2.31 %
Home & Garden	4796 5106	3857 4034	863 997	104 117	80.42 % 79.01 %	17.99 % 19.53 %	2.17 % 2.29 %
Finance	4978 4930	4085 4057	845 795	103 110	82.06 % 82.29 %	16.97 % 16.13 %	2.07 % 2.23 %
Health	4709 4996	3895 4104	721 815	98 108	82.71 % 82.15 %	15.31 % 16.31 %	2.08 % 2.16 %
Pets	4983 4837	3962 3817	938 954	113 113	79.51 % 78.91 %	18.82 % 19.72 %	2.27 % 2.34 %
Sport & Fitness	5096 4943	4048 3899	976 961	108 111	79.43 % 78.88 %	19.15 % 19.44 %	2.12 % 2.25 %
Job & Career	4854 5131	3814 4005	983 1041	101 112	78.57 % 78.05 %	20.25 % 20.29 %	2.08 % 2.18 %
Dating	4857 4758	3741 3634	1049 1053	103 110	77.02 % 76.38 %	21.60 % 22.13 %	2.12 % 2.31 %
Other	5036 4988	4101 4022	880 881	112 124	81.43 % 80.63 %	17.47 % 17.66 %	2.22 % 2.49 %

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	4638 4760	3591 3677	1000 998	93 103	77.43 % 77.25 %	21.56 % 20.97 %	2.01 % 2.16 %
Outlook Mail	4562 4626	3585 3627	909 927	101 104	78.58 % 78.40 %	19.93 % 20.04 %	2.21 % 2.25 %
Yahoo Mail	4625 4532	3657 3628	908 831	101 101	79.07 % 80.05 %	19.63 % 18.34 %	2.18 % 2.23 %
AOL Mail	4633 4780	3688 3790	873 923	95 101	79.60 % 79.29 %	18.84 % 19.31 %	2.05 % 2.11 %
Mail.com	4620 4596	3772 3690	766 839	97 100	81.65 % 80.29 %	16.58 % 18.26 %	2.10 % 2.18 %
Yandex Mail	4706 4673	3758 3696	882 917	101 111	79.86 % 79.09 %	18.74 % 19.62 %	2.15 % 2.38 %
GMX Mail	4690 4736	3679 3738	928 914	111 109	78.44 % 78.93 %	19.79 % 19.30 %	2.37 % 2.30 %
Zoho Mail	4704 4798	3835 3835	817 896	99 107	81.53 % 79.93 %	17.37 % 18.67 %	2.10 % 2.23 %
ProtonMail	4536 4839	3702 3916	801 831	94 107	81.61 % 80.93 %	17.66 % 17.17 %	2.07 % 2.21 %
Custom Mail	4667 4720	3866 3865	748 801	103 101	82.84 % 81.89 %	16.03 % 16.97 %	2.21 % 2.14 %
iCloud Mail	4614 4771	3582 3666	966 1030	99 118	77.63 % 76.84 %	20.94 % 21.59 %	2.15 % 2.47 %
Tuta	4645 4800	3785 3868	801 871	99 115	81.49 % 80.58 %	17.24 % 18.15 %	2.13 % 2.40 %
Juno.com	4779 4639	3901 3747	834 802	101 100	81.63 % 80.77 %	17.45 % 17.29 %	2.11 % 2.16 %
Mailfence	3026 3186	2421 2489	545 627	60 70	80.01 % 78.12 %	18.01 % 19.68 %	1.98 % 2.20 %

Compare Postmark with other providers

Compare the email deliverability of Postmark with other providers.