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
64.550 63.961	49.829 50.217	13.300 12.619	1.734 1.413

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 (%)
77.19 % 78.51 %	20.60 % 19.73 %	2.69 % 2.21 %

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	4681 4804	3583 3757	990 971	131 105	76.54 % 78.21 %	21.15 % 20.21 %	2.80 % 2.19 %
Elektronics	4869 4766	3787 3746	975 946	129 106	77.78 % 78.60 %	20.02 % 19.85 %	2.65 % 2.22 %
Entertainment	5043 5025	3894 3920	1029 1009	135 117	77.22 % 78.01 %	20.40 % 20.08 %	2.68 % 2.33 %
Cosmetics & Beauty	5050 4806	3876 3784	1061 947	137 99	76.75 % 78.73 %	21.01 % 19.70 %	2.71 % 2.06 %
Food & Drink	4904 4939	3763 3846	1059 1009	119 104	76.73 % 77.87 %	21.59 % 20.43 %	2.43 % 2.11 %
Home & Garden	4881 4853	3753 3813	1027 939	130 111	76.89 % 78.57 %	21.04 % 19.35 %	2.66 % 2.29 %
Finance	4977 5124	4025 4152	844 892	142 110	80.87 % 81.03 %	16.96 % 17.41 %	2.85 % 2.15 %
Health	5016 4903	3996 4012	922 783	133 108	79.67 % 81.83 %	18.38 % 15.97 %	2.65 % 2.20 %
Pets	4974 4994	3853 3887	1007 1004	135 115	77.46 % 77.83 %	20.25 % 20.10 %	2.71 % 2.30 %
Sport & Fitness	5070 4948	3892 3871	1049 997	142 106	76.77 % 78.23 %	20.69 % 20.15 %	2.80 % 2.14 %
Job & Career	5029 4860	3778 3703	1146 1080	130 109	75.12 % 76.19 %	22.79 % 22.22 %	2.59 % 2.24 %
Dating	5030 4816	3670 3616	1236 1124	136 106	72.96 % 75.08 %	24.57 % 23.34 %	2.70 % 2.20 %
Other	5026 5123	3959 4110	955 918	135 117	78.77 % 80.23 %	19.00 % 17.92 %	2.69 % 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	4661 4572	3490 3436	1073 1061	118 95	74.88 % 75.15 %	23.02 % 23.21 %	2.53 % 2.08 %
Outlook Mail	4463 4560	3358 3490	1004 972	125 105	75.24 % 76.54 %	22.50 % 21.32 %	2.80 % 2.30 %
Yahoo Mail	4725 4647	3595 3595	1025 968	127 104	76.08 % 77.36 %	21.69 % 20.83 %	2.69 % 2.24 %
AOL Mail	4535 4668	3449 3635	974 949	125 100	76.05 % 77.87 %	21.48 % 20.33 %	2.76 % 2.14 %
Mail.com	4907 4676	3833 3755	968 833	132 103	78.11 % 80.30 %	19.73 % 17.81 %	2.69 % 2.20 %
Yandex Mail	4613 4591	3537 3565	998 944	124 102	76.67 % 77.65 %	21.63 % 20.56 %	2.69 % 2.22 %
GMX Mail	4605 4634	3458 3552	1035 994	120 110	75.09 % 76.65 %	22.48 % 21.45 %	2.61 % 2.37 %
Zoho Mail	4846 4714	3797 3774	942 866	131 102	78.35 % 80.06 %	19.44 % 18.37 %	2.70 % 2.16 %
ProtonMail	4526 4452	3603 3567	831 824	119 93	79.61 % 80.12 %	18.36 % 18.51 %	2.63 % 2.09 %
Custom Mail	4773 4631	3794 3783	872 756	127 108	79.49 % 81.69 %	18.27 % 16.32 %	2.66 % 2.33 %
iCloud Mail	4641 4587	3480 3469	1075 1035	133 102	74.98 % 75.63 %	23.16 % 22.56 %	2.87 % 2.22 %
Tuta	4650 4657	3667 3750	877 833	128 106	78.86 % 80.52 %	18.86 % 17.89 %	2.75 % 2.28 %
Juno.com	4577 4828	3615 3877	858 887	118 105	78.98 % 80.30 %	18.75 % 18.37 %	2.58 % 2.17 %
Mailfence	4028 3744	3153 2969	768 697	107 78	78.28 % 79.30 %	19.07 % 18.62 %	2.66 % 2.08 %

Compare Constant Contact with other providers

Compare the email deliverability of Constant Contact with other providers.