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
65.457 64.919	49.992 50.483	13.772 13.108	1.693 1.328

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 (%)
76.37 % 77.76 %	21.04 % 20.19 %	2.59 % 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	4789 4961	3623 3834	1037 1029	129 98	75.65 % 77.28 %	21.65 % 20.74 %	2.69 % 1.98 %
Elektronics	4926 4886	3784 3792	1023 995	119 99	76.82 % 77.61 %	20.77 % 20.36 %	2.42 % 2.03 %
Entertainment	5074 5077	3868 3911	1073 1056	133 110	76.23 % 77.03 %	21.15 % 20.80 %	2.62 % 2.17 %
Cosmetics & Beauty	5140 4939	3913 3857	1097 987	130 95	76.13 % 78.09 %	21.34 % 19.98 %	2.53 % 1.92 %
Food & Drink	5050 5041	3825 3880	1104 1060	121 101	75.74 % 76.97 %	21.86 % 21.03 %	2.40 % 2.00 %
Home & Garden	4925 4911	3745 3830	1054 976	126 105	76.04 % 77.99 %	21.40 % 19.87 %	2.56 % 2.14 %
Finance	5060 5187	4068 4202	852 882	140 103	80.40 % 81.01 %	16.84 % 17.00 %	2.77 % 1.99 %
Health	4980 4990	3959 4089	890 799	131 102	79.50 % 81.94 %	17.87 % 16.01 %	2.63 % 2.04 %
Pets	5077 5064	3892 3908	1051 1048	134 108	76.66 % 77.17 %	20.70 % 20.70 %	2.64 % 2.13 %
Sport & Fitness	5187 4964	3937 3838	1106 1030	144 96	75.90 % 77.32 %	21.32 % 20.75 %	2.78 % 1.93 %
Job & Career	5011 4917	3700 3695	1189 1123	122 99	73.84 % 75.15 %	23.73 % 22.84 %	2.43 % 2.01 %
Dating	5086 4963	3651 3653	1303 1210	132 100	71.79 % 73.60 %	25.62 % 24.38 %	2.60 % 2.01 %
Other	5152 5019	4027 3994	993 913	132 112	78.16 % 79.58 %	19.27 % 18.19 %	2.56 % 2.23 %

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	4727 4490	3484 3294	1128 1111	115 85	73.70 % 73.36 %	23.86 % 24.74 %	2.43 % 1.89 %
Outlook Mail	4400 4554	3264 3450	1018 1009	118 95	74.18 % 75.76 %	23.14 % 22.16 %	2.68 % 2.09 %
Yahoo Mail	4699 4733	3522 3613	1049 1022	128 98	74.95 % 76.34 %	22.32 % 21.59 %	2.72 % 2.07 %
AOL Mail	4621 4753	3484 3652	1013 1003	124 98	75.39 % 76.84 %	21.92 % 21.10 %	2.68 % 2.06 %
Mail.com	4980 4829	3850 3857	1004 871	126 101	77.31 % 79.87 %	20.16 % 18.04 %	2.53 % 2.09 %
Yandex Mail	4626 4621	3497 3537	1015 990	114 94	75.59 % 76.54 %	21.94 % 21.42 %	2.46 % 2.03 %
GMX Mail	4608 4662	3420 3517	1072 1045	116 100	74.22 % 75.44 %	23.26 % 22.42 %	2.52 % 2.15 %
Zoho Mail	4815 4636	3732 3676	958 865	125 95	77.51 % 79.29 %	19.90 % 18.66 %	2.60 % 2.05 %
ProtonMail	4573 4513	3605 3599	850 831	118 83	78.83 % 79.75 %	18.59 % 18.41 %	2.58 % 1.84 %
Custom Mail	4742 4622	3741 3768	883 751	118 103	78.89 % 81.52 %	18.62 % 16.25 %	2.49 % 2.23 %
iCloud Mail	4615 4550	3379 3366	1109 1091	127 93	73.22 % 73.98 %	24.03 % 23.98 %	2.75 % 2.04 %
Tuta	4704 4689	3681 3755	896 835	127 99	78.25 % 80.08 %	19.05 % 17.81 %	2.70 % 2.11 %
Juno.com	4580 4771	3593 3796	873 880	114 95	78.45 % 79.56 %	19.06 % 18.44 %	2.49 % 1.99 %
Mailfence	4767 4496	3740 3603	904 804	123 89	78.46 % 80.14 %	18.96 % 17.88 %	2.58 % 1.98 %

Compare Constant Contact with other providers

Compare the email deliverability of Constant Contact with other providers.