MailChimp and Postmark Email Deliverability Comparison

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 Postmark than for MailChimp.

Emails Sent	Emails Inbox	Emails Spam	Emails Lost
529.023 136.976	410.155 112.364	99.661 18.887	19.296 4.927

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 MailChimp in this comparison.

Inbox (%)	Spam (%)	Lost (%)
77.53 % 82.03 %	18.84 % 13.79 %	3.65 % 3.60 %

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	40780 10570	32711 8833	6742 1298	1334 374	80.21 % 83.57 %	16.53 % 12.28 %	3.27 % 3.54 %
Elektronics	40680 10610	31904 8819	7408 1390	1388 350	78.43 % 83.12 %	18.21 % 13.10 %	3.41 % 3.30 %
Entertainment	40315 10467	31153 8578	7650 1464	1509 364	77.27 % 81.95 %	18.98 % 13.99 %	3.74 % 3.48 %
Cosmetics & Beauty	40872 10479	31657 8614	7709 1470	1492 357	77.45 % 82.20 %	18.86 % 14.03 %	3.65 % 3.41 %
Food & Drink	40742 10375	32714 8725	6692 1277	1331 316	80.30 % 84.10 %	16.43 % 12.31 %	3.27 % 3.05 %
Home & Garden	41145 10599	32984 8935	6836 1279	1340 330	80.17 % 84.30 %	16.61 % 12.07 %	3.26 % 3.11 %
Finance	40688 10560	30328 8433	8720 1644	1633 441	74.54 % 79.86 %	21.43 % 15.57 %	4.01 % 4.18 %
Health	40857 10405	30801 8412	8520 1507	1564 407	75.39 % 80.85 %	20.85 % 14.48 %	3.83 % 3.91 %
Pets	39934 10581	31776 8800	6752 1380	1399 348	79.57 % 83.17 %	16.91 % 13.04 %	3.50 % 3.29 %
Sport & Fitness	40270 10601	30878 8607	7855 1544	1550 388	76.68 % 81.19 %	19.51 % 14.56 %	3.85 % 3.66 %
Job & Career	40545 10684	30679 8520	8223 1642	1647 441	75.67 % 79.75 %	20.28 % 15.37 %	4.06 % 4.13 %
Dating	41443 10500	30238 8371	9539 1596	1687 448	72.96 % 79.72 %	23.02 % 15.20 %	4.07 % 4.27 %
Other	40752 10545	32332 8717	7015 1396	1422 363	79.34 % 82.66 %	17.21 % 13.24 %	3.49 % 3.44 %

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 MailChimp.

Provider	Emails Sent	Emails Inbox	Emails Spam	Emails Lost	Inbox (%)	Spam (%)	Lost (%)
Gmail	49825 10511	36707 8156	11050 1810	2064 485	73.67 % 77.59 %	22.18 % 17.22 %	4.14 % 4.61 %
Outlook Mail	49546 10428	37206 8368	10388 1576	1976 413	75.09 % 80.25 %	20.97 % 15.11 %	3.99 % 3.96 %
Yahoo Mail	49717 10503	38237 8550	9615 1508	1875 388	76.91 % 81.41 %	19.34 % 14.36 %	3.77 % 3.69 %
AOL Mail	49981 10562	38424 8605	9717 1474	1865 398	76.88 % 81.47 %	19.44 % 13.96 %	3.73 % 3.77 %
Mail.com	49958 10425	38897 8589	9259 1384	1822 366	77.86 % 82.39 %	18.53 % 13.28 %	3.65 % 3.51 %
Yandex Mail	50039 10371	37873 8368	10256 1553	1916 399	75.69 % 80.69 %	20.50 % 14.97 %	3.83 % 3.85 %
GMX Mail	49767 10552	38856 8797	9192 1325	1733 355	78.08 % 83.37 %	18.47 % 12.56 %	3.48 % 3.36 %
Zoho Mail	49964 10651	39372 8896	8967 1338	1643 339	78.80 % 83.52 %	17.95 % 12.56 %	3.29 % 3.18 %
ProtonMail	49240 10528	39030 8875	8575 1265	1639 340	79.26 % 84.30 %	17.41 % 12.02 %	3.33 % 3.23 %
Custom Mail	49506 10730	39746 9060	8172 1310	1596 337	80.29 % 84.44 %	16.51 % 12.21 %	3.22 % 3.14 %
iCloud Mail	10463 10502	8206 8295	1774 1722	471 428	78.43 % 78.98 %	16.95 % 16.40 %	4.50 % 4.08 %
Tuta	10410 10595	8680 8863	1368 1336	352 341	83.38 % 83.65 %	13.14 % 12.61 %	3.38 % 3.22 %
Juno.com	10607 10618	8921 8942	1328 1286	344 338	84.10 % 84.22 %	12.52 % 12.11 %	3.24 % 3.18 %

Compare MailChimp with other providers

Compare the email deliverability of MailChimp with other providers.