Constant Contact and Postmark Email Deliverability Comparison

Constant Contact

Postmark

In this comparison, the deliverability of Constant Contact and Postmark 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 Constant Contact.

Emails Sent	Emails Inbox	Emails Spam	Emails Lost
66.282 65.137	50.632 50.600	13.969 13.149	1.681 1.388

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 Constant Contact in this comparison.

Inbox (%)	Spam (%)	Lost (%)
76.39 % 77.68 %	21.08 % 20.19 %	2.54 % 2.13 %

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	5057 5071	3831 3914	1082 1056	144 101	75.76 % 77.18 %	21.40 % 20.82 %	2.85 % 1.99 %
Elektronics	5044 4882	3852 3796	1074 979	118 107	76.37 % 77.76 %	21.29 % 20.05 %	2.34 % 2.19 %
Entertainment	5084 4910	3854 3793	1103 1011	127 106	75.81 % 77.25 %	21.70 % 20.59 %	2.50 % 2.16 %
Cosmetics & Beauty	5338 5043	4100 3928	1107 1011	131 104	76.81 % 77.89 %	20.74 % 20.05 %	2.45 % 2.06 %
Food & Drink	5065 5038	3816 3866	1127 1075	122 97	75.34 % 76.74 %	22.25 % 21.34 %	2.41 % 1.93 %
Home & Garden	4893 5083	3720 3928	1040 1044	133 111	76.03 % 77.28 %	21.25 % 20.54 %	2.72 % 2.18 %
Finance	5137 5308	4115 4312	891 881	131 115	80.11 % 81.24 %	17.34 % 16.60 %	2.55 % 2.17 %
Health	4951 5000	3918 4060	915 830	118 110	79.14 % 81.20 %	18.48 % 16.60 %	2.38 % 2.20 %
Pets	5072 5137	3863 3965	1079 1063	130 109	76.16 % 77.19 %	21.27 % 20.69 %	2.56 % 2.12 %
Sport & Fitness	5207 4944	4012 3845	1066 997	129 102	77.05 % 77.77 %	20.47 % 20.17 %	2.48 % 2.06 %
Job & Career	5172 4922	3821 3676	1232 1142	119 104	73.88 % 74.69 %	23.82 % 23.20 %	2.30 % 2.11 %
Dating	5040 4871	3645 3605	1258 1165	137 101	72.32 % 74.01 %	24.96 % 23.92 %	2.72 % 2.07 %
Other	5222 4928	4085 3912	995 895	142 121	78.23 % 79.38 %	19.05 % 18.16 %	2.72 % 2.46 %

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 Constant Contact.

Provider	Emails Sent	Emails Inbox	Emails Spam	Emails Lost	Inbox (%)	Spam (%)	Lost (%)
Gmail	4720 4479	3466 3323	1142 1062	112 94	73.43 % 74.19 %	24.19 % 23.71 %	2.37 % 2.10 %
Outlook Mail	4670 4531	3471 3444	1081 991	118 96	74.33 % 76.01 %	23.15 % 21.87 %	2.53 % 2.12 %
Yahoo Mail	4766 4597	3591 3508	1049 991	126 98	75.35 % 76.31 %	22.01 % 21.56 %	2.64 % 2.13 %
AOL Mail	4630 4857	3488 3756	1026 996	116 105	75.33 % 77.33 %	22.16 % 20.51 %	2.51 % 2.16 %
Mail.com	4843 4956	3741 3934	983 923	119 99	77.25 % 79.38 %	20.30 % 18.62 %	2.46 % 2.00 %
Yandex Mail	4819 4687	3636 3562	1069 1019	114 106	75.45 % 76.00 %	22.18 % 21.74 %	2.37 % 2.26 %
GMX Mail	4755 4506	3565 3390	1065 1018	125 98	74.97 % 75.23 %	22.40 % 22.59 %	2.63 % 2.17 %
Zoho Mail	4707 4645	3631 3625	949 924	127 96	77.14 % 78.04 %	20.16 % 19.89 %	2.70 % 2.07 %
ProtonMail	4638 4620	3624 3706	892 824	122 90	78.14 % 80.22 %	19.23 % 17.84 %	2.63 % 1.95 %
Custom Mail	4727 4614	3749 3728	860 781	118 105	79.31 % 80.80 %	18.19 % 16.93 %	2.50 % 2.28 %
iCloud Mail	4743 4518	3490 3365	1130 1052	123 101	73.58 % 74.48 %	23.82 % 23.28 %	2.59 % 2.24 %
Tuta	4845 4771	3787 3807	938 863	120 101	78.16 % 79.79 %	19.36 % 18.09 %	2.48 % 2.12 %
Juno.com	4791 4871	3767 3869	901 892	123 110	78.63 % 79.43 %	18.81 % 18.31 %	2.57 % 2.26 %
Mailfence	4628 4485	3626 3583	884 813	118 89	78.35 % 79.89 %	19.10 % 18.13 %	2.55 % 1.98 %

Compare Constant Contact with other providers

Compare the email deliverability of Constant Contact with other providers.