MailChimp and Postmark Email Deliverability Comparison

MailChimp

Postmark

In this comparison, the deliverability of MailChimp 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 MailChimp than for Postmark.

Emails Sent	Emails Inbox	Emails Spam	Emails Lost
76.739 77.301	60.005 59.644	15.302 15.881	1.432 1.776

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. MailChimp beats Postmark in this comparison.

Inbox (%)	Spam (%)	Lost (%)
78.19 % 77.16 %	19.94 % 20.54 %	1.87 % 2.30 %

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, MailChimp is the clear winner.

Category	Emails Sent	Emails Inbox	Emails Spam	Emails Lost	Inbox (%)	Spam (%)	Lost (%)
Clothing	6027 6223	4727 4769	1181 1314	119 140	78.43 % 76.64 %	19.60 % 21.12 %	1.97 % 2.25 %
Elektronics	5905 5871	4674 4570	1129 1167	102 134	79.15 % 77.84 %	19.12 % 19.88 %	1.73 % 2.28 %
Entertainment	5930 5960	4613 4591	1199 1247	118 122	77.79 % 77.03 %	20.22 % 20.92 %	1.99 % 2.05 %
Cosmetics & Beauty	5984 5909	4703 4594	1155 1189	126 126	78.59 % 77.75 %	19.30 % 20.12 %	2.11 % 2.13 %
Food & Drink	5720 5893	4440 4518	1167 1249	113 126	77.62 % 76.67 %	20.40 % 21.19 %	1.98 % 2.14 %
Home & Garden	5892 6020	4587 4626	1186 1255	119 139	77.85 % 76.84 %	20.13 % 20.85 %	2.02 % 2.31 %
Finance	5806 5866	4741 4707	959 1016	106 143	81.66 % 80.24 %	16.52 % 17.32 %	1.83 % 2.44 %
Health	6004 6028	4873 4852	1034 1041	97 135	81.16 % 80.49 %	17.22 % 17.27 %	1.62 % 2.24 %
Pets	5926 6083	4588 4634	1229 1310	109 139	77.42 % 76.18 %	20.74 % 21.54 %	1.84 % 2.29 %
Sport & Fitness	5900 5716	4585 4412	1209 1165	106 139	77.71 % 77.19 %	20.49 % 20.38 %	1.80 % 2.43 %
Job & Career	5958 5918	4566 4407	1273 1369	119 142	76.64 % 74.47 %	21.37 % 23.13 %	2.00 % 2.40 %
Dating	5887 5907	4323 4330	1473 1439	91 138	73.43 % 73.30 %	25.02 % 24.36 %	1.55 % 2.34 %
Other	5800 5907	4585 4634	1108 1120	107 153	79.05 % 78.45 %	19.10 % 18.96 %	1.84 % 2.59 %

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, MailChimp is better than Postmark.

Provider	Emails Sent	Emails Inbox	Emails Spam	Emails Lost	Inbox (%)	Spam (%)	Lost (%)
Gmail	5593 5360	4190 3949	1296 1278	107 133	74.92 % 73.68 %	23.17 % 23.84 %	1.91 % 2.48 %
Outlook Mail	5529 5461	4217 4108	1215 1232	97 121	76.27 % 75.22 %	21.98 % 22.56 %	1.75 % 2.22 %
Yahoo Mail	5348 5550	4113 4209	1136 1223	99 118	76.91 % 75.84 %	21.24 % 22.04 %	1.85 % 2.13 %
AOL Mail	5571 5429	4329 4148	1138 1153	104 128	77.71 % 76.40 %	20.43 % 21.24 %	1.87 % 2.36 %
Mail.com	5591 5528	4452 4361	1034 1042	105 125	79.63 % 78.89 %	18.49 % 18.85 %	1.88 % 2.26 %
Yandex Mail	5337 5569	4137 4255	1112 1192	88 122	77.52 % 76.41 %	20.84 % 21.40 %	1.65 % 2.19 %
GMX Mail	5458 5418	4176 4051	1179 1244	103 123	76.51 % 74.77 %	21.60 % 22.96 %	1.89 % 2.27 %
Zoho Mail	5587 5521	4447 4308	1039 1088	101 125	79.60 % 78.03 %	18.60 % 19.71 %	1.81 % 2.26 %
ProtonMail	5463 5639	4395 4482	970 1032	98 125	80.45 % 79.48 %	17.76 % 18.30 %	1.79 % 2.22 %
Custom Mail	5293 5386	4277 4313	917 957	99 116	80.80 % 80.08 %	17.32 % 17.77 %	1.87 % 2.15 %
iCloud Mail	5402 5534	4024 4043	1276 1354	102 137	74.49 % 73.06 %	23.62 % 24.47 %	1.89 % 2.48 %
Tuta	5611 5675	4479 4483	1023 1062	109 130	79.83 % 79.00 %	18.23 % 18.71 %	1.94 % 2.29 %
Juno.com	5417 5728	4350 4584	945 998	122 146	80.30 % 80.03 %	17.45 % 17.42 %	2.25 % 2.55 %
Mailfence	5539 5503	4419 4350	1022 1026	98 127	79.78 % 79.05 %	18.45 % 18.64 %	1.77 % 2.31 %

Compare MailChimp with other providers

Compare the email deliverability of MailChimp with other providers.