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
77.376 76.208	58.851 59.446	16.516 15.216	2.009 1.546

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 (%)
76.06 % 78.00 %	21.35 % 19.97 %	2.60 % 2.03 %

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	5909 5962	4440 4609	1299 1237	170 116	75.14 % 77.31 %	21.98 % 20.75 %	2.88 % 1.95 %
Elektronics	5925 5746	4507 4487	1276 1135	142 124	76.07 % 78.09 %	21.54 % 19.75 %	2.40 % 2.16 %
Entertainment	5885 5767	4452 4475	1281 1177	152 115	75.65 % 77.60 %	21.77 % 20.41 %	2.58 % 1.99 %
Cosmetics & Beauty	6227 5867	4782 4599	1289 1151	156 117	76.79 % 78.39 %	20.70 % 19.62 %	2.51 % 1.99 %
Food & Drink	5860 5848	4417 4519	1298 1222	145 107	75.38 % 77.27 %	22.15 % 20.90 %	2.47 % 1.83 %
Home & Garden	5802 5964	4390 4638	1255 1204	157 122	75.66 % 77.77 %	21.63 % 20.19 %	2.71 % 2.05 %
Finance	6052 6130	4809 4988	1080 1017	163 125	79.46 % 81.37 %	17.85 % 16.59 %	2.69 % 2.04 %
Health	5852 5936	4597 4850	1112 963	143 123	78.55 % 81.70 %	19.00 % 16.22 %	2.44 % 2.07 %
Pets	5969 6013	4523 4653	1290 1238	156 122	75.77 % 77.38 %	21.61 % 20.59 %	2.61 % 2.03 %
Sport & Fitness	6013 5783	4597 4507	1262 1161	154 115	76.45 % 77.94 %	20.99 % 20.08 %	2.56 % 1.99 %
Job & Career	5970 5694	4390 4272	1438 1306	142 116	73.53 % 75.03 %	24.09 % 22.94 %	2.38 % 2.04 %
Dating	5874 5757	4241 4271	1471 1375	162 111	72.20 % 74.19 %	25.04 % 23.88 %	2.76 % 1.93 %
Other	6038 5741	4706 4578	1165 1030	167 133	77.94 % 79.74 %	19.29 % 17.94 %	2.77 % 2.32 %

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	5498 5221	4015 3883	1347 1236	136 102	73.03 % 74.37 %	24.50 % 23.67 %	2.47 % 1.95 %
Outlook Mail	5450 5281	4036 4016	1268 1158	146 107	74.06 % 76.05 %	23.27 % 21.93 %	2.68 % 2.03 %
Yahoo Mail	5564 5483	4177 4202	1237 1170	150 111	75.07 % 76.64 %	22.23 % 21.34 %	2.70 % 2.02 %
AOL Mail	5387 5582	4058 4329	1189 1136	140 117	75.33 % 77.55 %	22.07 % 20.35 %	2.60 % 2.10 %
Mail.com	5602 5748	4317 4587	1144 1051	141 110	77.06 % 79.80 %	20.42 % 18.28 %	2.52 % 1.91 %
Yandex Mail	5579 5529	4177 4238	1266 1173	136 118	74.87 % 76.65 %	22.69 % 21.22 %	2.44 % 2.13 %
GMX Mail	5520 5207	4113 3936	1260 1164	147 107	74.51 % 75.59 %	22.83 % 22.35 %	2.66 % 2.05 %
Zoho Mail	5492 5432	4223 4256	1119 1070	150 106	76.89 % 78.35 %	20.38 % 19.70 %	2.73 % 1.95 %
ProtonMail	5503 5417	4269 4360	1086 958	148 99	77.58 % 80.49 %	19.73 % 17.69 %	2.69 % 1.83 %
Custom Mail	5501 5335	4341 4329	1021 889	139 117	78.91 % 81.14 %	18.56 % 16.66 %	2.53 % 2.19 %
iCloud Mail	5570 5272	4087 3941	1338 1219	145 112	73.38 % 74.75 %	24.02 % 23.12 %	2.60 % 2.12 %
Tuta	5715 5623	4450 4510	1120 999	145 114	77.87 % 80.21 %	19.60 % 17.77 %	2.54 % 2.03 %
Juno.com	5583 5731	4370 4578	1068 1029	145 124	78.27 % 79.88 %	19.13 % 17.95 %	2.60 % 2.16 %
Mailfence	5412 5347	4218 4281	1053 964	141 102	77.94 % 80.06 %	19.46 % 18.03 %	2.61 % 1.91 %

Compare Constant Contact with other providers

Compare the email deliverability of Constant Contact with other providers.