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
539.057 147.015	418.308 120.909	101.600 20.423	19.540 5.173

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 (%)
77.60 % 82.24 %	18.85 % 13.89 %	3.62 % 3.52 %

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	41572 11277	33342 9443	6908 1406	1351 392	80.20 % 83.74 %	16.62 % 12.47 %	3.25 % 3.48 %
Elektronics	41454 11316	32533 9424	7563 1504	1406 369	78.48 % 83.28 %	18.24 % 13.29 %	3.39 % 3.26 %
Entertainment	41090 11234	31786 9229	7808 1581	1529 384	77.36 % 82.15 %	19.00 % 14.07 %	3.72 % 3.42 %
Cosmetics & Beauty	41643 11222	32288 9250	7847 1584	1511 374	77.54 % 82.43 %	18.84 % 14.12 %	3.63 % 3.33 %
Food & Drink	41599 11120	33412 9368	6854 1383	1352 332	80.32 % 84.24 %	16.48 % 12.44 %	3.25 % 2.99 %
Home & Garden	41818 11374	33534 9586	6962 1393	1357 350	80.19 % 84.28 %	16.65 % 12.25 %	3.25 % 3.08 %
Finance	41479 11390	30971 9148	8866 1768	1651 462	74.67 % 80.32 %	21.37 % 15.52 %	3.98 % 4.06 %
Health	41568 11190	31376 9063	8660 1621	1581 427	75.48 % 80.99 %	20.83 % 14.49 %	3.80 % 3.82 %
Pets	40695 11339	32392 9439	6903 1493	1419 366	79.60 % 83.24 %	16.96 % 13.17 %	3.49 % 3.23 %
Sport & Fitness	41056 11448	31508 9331	8017 1674	1571 407	76.74 % 81.51 %	19.53 % 14.62 %	3.83 % 3.56 %
Job & Career	41330 11464	31324 9177	8366 1777	1665 461	75.79 % 80.05 %	20.24 % 15.50 %	4.03 % 4.02 %
Dating	42200 11236	30854 9005	9679 1710	1706 466	73.11 % 80.14 %	22.94 % 15.22 %	4.04 % 4.15 %
Other	41553 11405	32988 9446	7167 1529	1441 383	79.39 % 82.82 %	17.25 % 13.41 %	3.47 % 3.36 %

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	50625 11316	37369 8843	11211 1929	2081 504	73.82 % 78.15 %	22.15 % 17.05 %	4.11 % 4.45 %
Outlook Mail	50264 11176	37792 8989	10524 1692	1994 431	75.19 % 80.43 %	20.94 % 15.14 %	3.97 % 3.86 %
Yahoo Mail	50468 11164	38832 9116	9744 1606	1893 405	76.94 % 81.66 %	19.31 % 14.39 %	3.75 % 3.63 %
AOL Mail	50779 11334	39072 9266	9865 1583	1885 416	76.95 % 81.75 %	19.43 % 13.97 %	3.71 % 3.67 %
Mail.com	50767 11147	39555 9200	9423 1496	1840 380	77.91 % 82.53 %	18.56 % 13.42 %	3.62 % 3.41 %
Yandex Mail	50905 11157	38563 9033	10432 1672	1939 421	75.75 % 80.96 %	20.49 % 14.99 %	3.81 % 3.77 %
GMX Mail	50610 11304	39538 9436	9362 1439	1752 376	78.12 % 83.47 %	18.50 % 12.73 %	3.46 % 3.33 %
Zoho Mail	50703 11469	39986 9590	9114 1471	1662 358	78.86 % 83.62 %	17.98 % 12.83 %	3.28 % 3.12 %
ProtonMail	50015 11276	39667 9512	8715 1389	1658 359	79.31 % 84.36 %	17.42 % 12.32 %	3.32 % 3.18 %
Custom Mail	50272 11489	40360 9705	8317 1423	1615 354	80.28 % 84.47 %	16.54 % 12.39 %	3.21 % 3.08 %
iCloud Mail	11136 11321	8762 8998	1909 1836	487 449	78.68 % 79.48 %	17.14 % 16.22 %	4.37 % 3.97 %
Tuta	11139 11402	9270 9558	1513 1461	371 360	83.22 % 83.83 %	13.58 % 12.81 %	3.33 % 3.16 %
Juno.com	11374 11460	9542 9663	1471 1426	363 360	83.89 % 84.32 %	12.93 % 12.44 %	3.19 % 3.14 %

Compare MailChimp with other providers

Compare the email deliverability of MailChimp with other providers.