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
77.377 77.364	59.263 60.340	16.280 15.418	1.834 1.606

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 (%)
76.59 % 77.99 %	21.04 % 19.93 %	2.37 % 2.08 %

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	6015 6125	4543 4737	1315 1265	157 123	75.53 % 77.34 %	21.86 % 20.65 %	2.61 % 2.01 %
Elektronics	5993 5829	4631 4554	1231 1152	131 123	77.27 % 78.13 %	20.54 % 19.76 %	2.19 % 2.11 %
Entertainment	5899 5939	4481 4607	1279 1218	139 114	75.96 % 77.57 %	21.68 % 20.51 %	2.36 % 1.92 %
Cosmetics & Beauty	6021 5972	4690 4699	1197 1157	134 116	77.89 % 78.68 %	19.88 % 19.37 %	2.23 % 1.94 %
Food & Drink	5782 5914	4401 4591	1246 1211	135 112	76.12 % 77.63 %	21.55 % 20.48 %	2.33 % 1.89 %
Home & Garden	5876 6083	4474 4729	1257 1227	145 127	76.14 % 77.74 %	21.39 % 20.17 %	2.47 % 2.09 %
Finance	6015 5980	4788 4887	1078 957	149 136	79.60 % 81.72 %	17.92 % 16.00 %	2.48 % 2.27 %
Health	5920 6023	4696 4892	1090 1009	134 122	79.32 % 81.22 %	18.41 % 16.75 %	2.26 % 2.03 %
Pets	5977 6058	4543 4677	1286 1257	148 124	76.01 % 77.20 %	21.52 % 20.75 %	2.48 % 2.05 %
Sport & Fitness	5999 5761	4594 4496	1265 1142	140 123	76.58 % 78.04 %	21.09 % 19.82 %	2.33 % 2.14 %
Job & Career	6103 5954	4526 4491	1440 1339	137 124	74.16 % 75.43 %	23.59 % 22.49 %	2.24 % 2.08 %
Dating	5847 5963	4248 4403	1457 1436	142 124	72.65 % 73.84 %	24.92 % 24.08 %	2.43 % 2.08 %
Other	5930 5763	4648 4577	1139 1048	143 138	78.38 % 79.42 %	19.21 % 18.18 %	2.41 % 2.39 %

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	5633 5361	4144 3973	1357 1270	132 118	73.57 % 74.11 %	24.09 % 23.69 %	2.34 % 2.20 %
Outlook Mail	5493 5479	4102 4166	1261 1206	130 107	74.68 % 76.04 %	22.96 % 22.01 %	2.37 % 1.95 %
Yahoo Mail	5663 5570	4284 4261	1244 1199	135 110	75.65 % 76.50 %	21.97 % 21.53 %	2.38 % 1.97 %
AOL Mail	5531 5446	4203 4213	1194 1110	134 123	75.99 % 77.36 %	21.59 % 20.38 %	2.42 % 2.26 %
Mail.com	5532 5653	4291 4514	1112 1027	129 112	77.57 % 79.85 %	20.10 % 18.17 %	2.33 % 1.98 %
Yandex Mail	5570 5609	4223 4327	1221 1168	126 114	75.82 % 77.14 %	21.92 % 20.82 %	2.26 % 2.03 %
GMX Mail	5556 5412	4157 4097	1266 1202	133 113	74.82 % 75.70 %	22.79 % 22.21 %	2.39 % 2.09 %
Zoho Mail	5370 5461	4153 4290	1083 1060	134 111	77.34 % 78.56 %	20.17 % 19.41 %	2.50 % 2.03 %
ProtonMail	5485 5591	4281 4497	1066 986	138 108	78.05 % 80.43 %	19.43 % 17.64 %	2.52 % 1.93 %
Custom Mail	5348 5358	4248 4335	976 915	124 108	79.43 % 80.91 %	18.25 % 17.08 %	2.32 % 2.02 %
iCloud Mail	5411 5528	3976 4107	1307 1298	128 123	73.48 % 74.29 %	24.15 % 23.48 %	2.37 % 2.23 %
Tuta	5676 5765	4454 4608	1096 1039	126 118	78.47 % 79.93 %	19.31 % 18.02 %	2.22 % 2.05 %
Juno.com	5700 5695	4490 4582	1073 982	137 131	78.77 % 80.46 %	18.82 % 17.24 %	2.40 % 2.30 %
Mailfence	5409 5436	4257 4370	1024 956	128 110	78.70 % 80.39 %	18.93 % 17.59 %	2.37 % 2.02 %

Compare Constant Contact with other providers

Compare the email deliverability of Constant Contact with other providers.