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
65.137 66.195	50.600 49.906	13.149 14.478	1.388 1.811

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 (%)
77.68 % 75.39 %	20.19 % 21.87 %	2.13 % 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	5071 5319	3914 3992	1056 1177	101 150	77.18 % 75.05 %	20.82 % 22.13 %	1.99 % 2.82 %
Elektronics	4882 4743	3796 3580	979 1025	107 138	77.76 % 75.48 %	20.05 % 21.61 %	2.19 % 2.91 %
Entertainment	4910 5189	3793 3919	1011 1133	106 137	77.25 % 75.53 %	20.59 % 21.83 %	2.16 % 2.64 %
Cosmetics & Beauty	5043 4842	3928 3673	1011 1047	104 122	77.89 % 75.86 %	20.05 % 21.62 %	2.06 % 2.52 %
Food & Drink	5038 5176	3866 3874	1075 1153	97 149	76.74 % 74.85 %	21.34 % 22.28 %	1.93 % 2.88 %
Home & Garden	5083 5130	3928 3815	1044 1172	111 143	77.28 % 74.37 %	20.54 % 22.85 %	2.18 % 2.79 %
Finance	5308 5025	4312 3974	881 921	115 130	81.24 % 79.08 %	16.60 % 18.33 %	2.17 % 2.59 %
Health	5000 5079	4060 3983	830 960	110 136	81.20 % 78.42 %	16.60 % 18.90 %	2.20 % 2.68 %
Pets	5137 4968	3965 3726	1063 1110	109 132	77.19 % 75.00 %	20.69 % 22.34 %	2.12 % 2.66 %
Sport & Fitness	4944 5085	3845 3829	997 1114	102 142	77.77 % 75.30 %	20.17 % 21.91 %	2.06 % 2.79 %
Job & Career	4922 5105	3676 3750	1142 1214	104 141	74.69 % 73.46 %	23.20 % 23.78 %	2.11 % 2.76 %
Dating	4871 5238	3605 3750	1165 1349	101 139	74.01 % 71.59 %	23.92 % 25.75 %	2.07 % 2.65 %
Other	4928 5296	3912 4041	895 1103	121 152	79.38 % 76.30 %	18.16 % 20.83 %	2.46 % 2.87 %

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	4479 4881	3323 3533	1062 1214	94 134	74.19 % 72.38 %	23.71 % 24.87 %	2.10 % 2.75 %
Outlook Mail	4531 4740	3444 3515	991 1096	96 129	76.01 % 74.16 %	21.87 % 23.12 %	2.12 % 2.72 %
Yahoo Mail	4597 4752	3508 3511	991 1108	98 133	76.31 % 73.88 %	21.56 % 23.32 %	2.13 % 2.80 %
AOL Mail	4857 4761	3756 3579	996 1058	105 124	77.33 % 75.17 %	20.51 % 22.22 %	2.16 % 2.60 %
Mail.com	4956 4663	3934 3553	923 985	99 125	79.38 % 76.20 %	18.62 % 21.12 %	2.00 % 2.68 %
Yandex Mail	4687 4708	3562 3534	1019 1056	106 118	76.00 % 75.06 %	21.74 % 22.43 %	2.26 % 2.51 %
GMX Mail	4506 4685	3390 3453	1018 1110	98 122	75.23 % 73.70 %	22.59 % 23.69 %	2.17 % 2.60 %
Zoho Mail	4645 4670	3625 3547	924 992	96 131	78.04 % 75.95 %	19.89 % 21.24 %	2.07 % 2.81 %
ProtonMail	4620 4822	3706 3765	824 924	90 133	80.22 % 78.08 %	17.84 % 19.16 %	1.95 % 2.76 %
Custom Mail	4614 4433	3728 3458	781 853	105 122	80.80 % 78.01 %	16.93 % 19.24 %	2.28 % 2.75 %
iCloud Mail	4518 4799	3365 3441	1052 1219	101 139	74.48 % 71.70 %	23.28 % 25.40 %	2.24 % 2.90 %
Tuta	4771 4878	3807 3785	863 953	101 140	79.79 % 77.59 %	18.09 % 19.54 %	2.12 % 2.87 %
Juno.com	4871 4576	3869 3501	892 946	110 129	79.43 % 76.51 %	18.31 % 20.67 %	2.26 % 2.82 %
Mailfence	4485 4827	3583 3731	813 964	89 132	79.89 % 77.29 %	18.13 % 19.97 %	1.98 % 2.73 %

Compare Postmark with other providers

Compare the email deliverability of Postmark with other providers.