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
63.961 65.251	50.217 50.995	12.619 12.880	1.413 1.512

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 (%)
78.51 % 78.15 %	19.73 % 19.74 %	2.21 % 2.32 %

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	4804 5007	3757 3880	971 1032	105 112	78.21 % 77.49 %	20.21 % 20.61 %	2.19 % 2.24 %
Elektronics	4766 5002	3746 3917	946 978	106 119	78.60 % 78.31 %	19.85 % 19.55 %	2.22 % 2.38 %
Entertainment	5025 4940	3920 3861	1009 980	117 108	78.01 % 78.16 %	20.08 % 19.84 %	2.33 % 2.19 %
Cosmetics & Beauty	4806 5084	3784 4002	947 985	99 107	78.73 % 78.72 %	19.70 % 19.37 %	2.06 % 2.10 %
Food & Drink	4939 5128	3846 3992	1009 1028	104 120	77.87 % 77.85 %	20.43 % 20.05 %	2.11 % 2.34 %
Home & Garden	4853 5035	3813 3904	939 1025	111 121	78.57 % 77.54 %	19.35 % 20.36 %	2.29 % 2.40 %
Finance	5124 5047	4152 4121	892 813	110 119	81.03 % 81.65 %	17.41 % 16.11 %	2.15 % 2.36 %
Health	4903 5036	4012 4091	783 833	108 114	81.83 % 81.24 %	15.97 % 16.54 %	2.20 % 2.26 %
Pets	4994 4904	3887 3800	1004 1010	115 112	77.83 % 77.49 %	20.10 % 20.60 %	2.30 % 2.28 %
Sport & Fitness	4948 5080	3871 3956	997 1019	106 120	78.23 % 77.87 %	20.15 % 20.06 %	2.14 % 2.36 %
Job & Career	4860 5195	3703 3957	1080 1128	109 117	76.19 % 76.17 %	22.22 % 21.71 %	2.24 % 2.25 %
Dating	4816 4876	3616 3617	1124 1141	106 119	75.08 % 74.18 %	23.34 % 23.40 %	2.20 % 2.44 %
Other	5123 4917	4110 3897	918 908	117 124	80.23 % 79.26 %	17.92 % 18.47 %	2.28 % 2.52 %

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	4572 4863	3436 3671	1061 1091	95 113	75.15 % 75.49 %	23.21 % 22.43 %	2.08 % 2.32 %
Outlook Mail	4560 4669	3490 3596	972 976	105 108	76.54 % 77.02 %	21.32 % 20.90 %	2.30 % 2.31 %
Yahoo Mail	4647 4612	3595 3624	968 895	104 106	77.36 % 78.58 %	20.83 % 19.41 %	2.24 % 2.30 %
AOL Mail	4668 4893	3635 3830	949 973	100 106	77.87 % 78.28 %	20.33 % 19.89 %	2.14 % 2.17 %
Mail.com	4676 4597	3755 3631	833 872	103 102	80.30 % 78.99 %	17.81 % 18.97 %	2.20 % 2.22 %
Yandex Mail	4591 4643	3565 3588	944 961	102 105	77.65 % 77.28 %	20.56 % 20.70 %	2.22 % 2.26 %
GMX Mail	4634 4647	3552 3593	994 965	110 108	76.65 % 77.32 %	21.45 % 20.77 %	2.37 % 2.32 %
Zoho Mail	4714 4696	3774 3688	866 912	102 108	80.06 % 78.53 %	18.37 % 19.42 %	2.16 % 2.30 %
ProtonMail	4452 4871	3567 3895	824 865	93 112	80.12 % 79.96 %	18.51 % 17.76 %	2.09 % 2.30 %
Custom Mail	4631 4628	3783 3738	756 798	108 102	81.69 % 80.77 %	16.32 % 17.24 %	2.33 % 2.20 %
iCloud Mail	4587 4756	3469 3559	1035 1088	102 119	75.63 % 74.83 %	22.56 % 22.88 %	2.22 % 2.50 %
Tuta	4657 4809	3750 3810	833 895	106 120	80.52 % 79.23 %	17.89 % 18.61 %	2.28 % 2.50 %
Juno.com	4828 4601	3877 3672	887 817	105 109	80.30 % 79.81 %	18.37 % 17.76 %	2.17 % 2.37 %
Mailfence	3744 3966	2969 3100	697 772	78 94	79.30 % 78.16 %	18.62 % 19.47 %	2.08 % 2.37 %

Compare Postmark with other providers

Compare the email deliverability of Postmark with other providers.