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
66.103 65.170	50.487 50.776	13.951 13.059	1.665 1.335

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 (%)
76.38 % 77.91 %	21.10 % 20.04 %	2.52 % 2.05 %

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	4977 5054	3771 3909	1072 1048	134 97	75.77 % 77.34 %	21.54 % 20.74 %	2.69 % 1.92 %
Elektronics	5009 4865	3852 3784	1040 983	117 98	76.90 % 77.78 %	20.76 % 20.21 %	2.34 % 2.01 %
Entertainment	5116 4883	3886 3811	1101 967	129 105	75.96 % 78.05 %	21.52 % 19.80 %	2.52 % 2.15 %
Cosmetics & Beauty	5279 5003	4045 3922	1107 985	127 96	76.62 % 78.39 %	20.97 % 19.69 %	2.41 % 1.92 %
Food & Drink	5001 5094	3781 3918	1105 1077	115 99	75.60 % 76.91 %	22.10 % 21.14 %	2.30 % 1.94 %
Home & Garden	4977 5052	3791 3925	1055 1016	131 111	76.17 % 77.69 %	21.20 % 20.11 %	2.63 % 2.20 %
Finance	5118 5254	4100 4268	886 882	132 104	80.11 % 81.23 %	17.31 % 16.79 %	2.58 % 1.98 %
Health	4975 4946	3935 4022	919 816	121 108	79.10 % 81.32 %	18.47 % 16.50 %	2.43 % 2.18 %
Pets	5134 5085	3913 3940	1088 1041	133 104	76.22 % 77.48 %	21.19 % 20.47 %	2.59 % 2.05 %
Sport & Fitness	5185 5081	3982 3966	1073 1018	130 97	76.80 % 78.06 %	20.69 % 20.04 %	2.51 % 1.91 %
Job & Career	5080 4957	3747 3705	1217 1146	116 106	73.76 % 74.74 %	23.96 % 23.12 %	2.28 % 2.14 %
Dating	5024 4950	3611 3655	1280 1198	133 97	71.88 % 73.84 %	25.48 % 24.20 %	2.65 % 1.96 %
Other	5228 4946	4073 3951	1008 882	147 113	77.91 % 79.88 %	19.28 % 17.83 %	2.81 % 2.28 %

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	4685 4513	3432 3341	1143 1083	110 89	73.26 % 74.03 %	24.40 % 24.00 %	2.35 % 1.97 %
Outlook Mail	4657 4625	3475 3521	1060 1012	122 92	74.62 % 76.13 %	22.76 % 21.88 %	2.62 % 1.99 %
Yahoo Mail	4781 4521	3598 3465	1056 960	127 96	75.26 % 76.64 %	22.09 % 21.23 %	2.66 % 2.12 %
AOL Mail	4607 4776	3480 3694	1009 980	118 102	75.54 % 77.35 %	21.90 % 20.52 %	2.56 % 2.14 %
Mail.com	4835 4943	3743 3946	970 900	122 97	77.41 % 79.83 %	20.06 % 18.21 %	2.52 % 1.96 %
Yandex Mail	4750 4742	3572 3626	1061 1017	117 99	75.20 % 76.47 %	22.34 % 21.45 %	2.46 % 2.09 %
GMX Mail	4776 4579	3573 3454	1083 1030	120 95	74.81 % 75.43 %	22.68 % 22.49 %	2.51 % 2.07 %
Zoho Mail	4790 4664	3709 3665	958 905	123 94	77.43 % 78.58 %	20.00 % 19.40 %	2.57 % 2.02 %
ProtonMail	4614 4584	3613 3702	886 793	115 89	78.31 % 80.76 %	19.20 % 17.30 %	2.49 % 1.94 %
Custom Mail	4741 4579	3725 3710	904 766	112 103	78.57 % 81.02 %	19.07 % 16.73 %	2.36 % 2.25 %
iCloud Mail	4652 4644	3421 3451	1108 1095	123 98	73.54 % 74.31 %	23.82 % 23.58 %	2.64 % 2.11 %
Tuta	4813 4740	3776 3800	916 842	121 98	78.45 % 80.17 %	19.03 % 17.76 %	2.51 % 2.07 %
Juno.com	4717 4891	3703 3897	897 893	117 101	78.50 % 79.68 %	19.02 % 18.26 %	2.48 % 2.07 %
Mailfence	4685 4369	3667 3504	900 783	118 82	78.27 % 80.20 %	19.21 % 17.92 %	2.52 % 1.88 %

Compare Constant Contact with other providers

Compare the email deliverability of Constant Contact with other providers.