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
65.027 66.270	50.616 49.732	13.085 14.713	1.326 1.825

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 (%)
77.84 % 75.04 %	20.12 % 22.20 %	2.04 % 2.75 %

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	4970 5161	3843 3853	1033 1166	94 142	77.32 % 74.66 %	20.78 % 22.59 %	1.89 % 2.75 %
Elektronics	4862 4919	3785 3684	983 1096	94 139	77.85 % 74.89 %	20.22 % 22.28 %	1.93 % 2.83 %
Entertainment	4997 5074	3877 3837	1015 1108	105 129	77.59 % 75.62 %	20.31 % 21.84 %	2.10 % 2.54 %
Cosmetics & Beauty	4939 5010	3869 3781	976 1100	94 129	78.34 % 75.47 %	19.76 % 21.96 %	1.90 % 2.57 %
Food & Drink	5061 5249	3882 3892	1078 1211	101 146	76.70 % 74.15 %	21.30 % 23.07 %	2.00 % 2.78 %
Home & Garden	5067 5026	3946 3721	1012 1161	109 144	77.88 % 74.04 %	19.97 % 23.10 %	2.15 % 2.87 %
Finance	5190 5013	4199 3974	884 907	107 132	80.91 % 79.27 %	17.03 % 18.09 %	2.06 % 2.63 %
Health	4964 5091	4038 4000	818 958	108 133	81.35 % 78.57 %	16.48 % 18.82 %	2.18 % 2.61 %
Pets	5115 5099	3960 3796	1051 1160	104 143	77.42 % 74.45 %	20.55 % 22.75 %	2.03 % 2.80 %
Sport & Fitness	4997 5198	3891 3885	1008 1168	98 145	77.87 % 74.74 %	20.17 % 22.47 %	1.96 % 2.79 %
Job & Career	4970 5173	3720 3762	1149 1267	101 144	74.85 % 72.72 %	23.12 % 24.49 %	2.03 % 2.78 %
Dating	4915 5160	3632 3657	1185 1357	98 146	73.90 % 70.87 %	24.11 % 26.30 %	1.99 % 2.83 %
Other	4980 5097	3974 3890	893 1054	113 153	79.80 % 76.32 %	17.93 % 20.68 %	2.27 % 3.00 %

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	4525 4853	3346 3466	1094 1250	85 137	73.94 % 71.42 %	24.18 % 25.76 %	1.88 % 2.82 %
Outlook Mail	4546 4676	3464 3438	993 1110	89 128	76.20 % 73.52 %	21.84 % 23.74 %	1.96 % 2.74 %
Yahoo Mail	4730 4671	3610 3475	1018 1060	102 136	76.32 % 74.40 %	21.52 % 22.69 %	2.16 % 2.91 %
AOL Mail	4744 4862	3664 3626	980 1105	100 131	77.23 % 74.58 %	20.66 % 22.73 %	2.11 % 2.69 %
Mail.com	4897 4623	3912 3525	888 976	97 122	79.89 % 76.25 %	18.13 % 21.11 %	1.98 % 2.64 %
Yandex Mail	4667 4795	3569 3572	1003 1101	95 122	76.47 % 74.49 %	21.49 % 22.96 %	2.04 % 2.54 %
GMX Mail	4666 4634	3499 3410	1066 1098	101 126	74.99 % 73.59 %	22.85 % 23.69 %	2.16 % 2.72 %
Zoho Mail	4684 4727	3686 3577	906 1021	92 129	78.69 % 75.67 %	19.34 % 21.60 %	1.96 % 2.73 %
ProtonMail	4568 4841	3673 3750	810 958	85 133	80.41 % 77.46 %	17.73 % 19.79 %	1.86 % 2.75 %
Custom Mail	4630 4458	3781 3464	744 878	105 116	81.66 % 77.70 %	16.07 % 19.69 %	2.27 % 2.60 %
iCloud Mail	4587 4921	3396 3505	1093 1269	98 147	74.04 % 71.23 %	23.83 % 25.79 %	2.14 % 2.99 %
Tuta	4684 4834	3760 3701	826 992	98 141	80.27 % 76.56 %	17.63 % 20.52 %	2.09 % 2.92 %
Juno.com	4737 4628	3776 3560	866 937	95 131	79.71 % 76.92 %	18.28 % 20.25 %	2.01 % 2.83 %
Mailfence	4362 4747	3480 3663	798 958	84 126	79.78 % 77.16 %	18.29 % 20.18 %	1.93 % 2.65 %

Compare Postmark with other providers

Compare the email deliverability of Postmark with other providers.