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
463.164 70.968	356.201 58.513	89.847 9.753	17.116 2.702

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 (%)
76.91 % 82.45 %	19.40 % 13.74 %	3.70 % 3.81 %

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	35770 5537	28540 4670	6055 662	1175 205	79.79 % 84.34 %	16.93 % 11.96 %	3.28 % 3.70 %
Elektronics	35758 5505	27828 4609	6685 710	1245 186	77.82 % 83.72 %	18.70 % 12.90 %	3.48 % 3.38 %
Entertainment	35145 5319	26925 4371	6884 741	1336 207	76.61 % 82.18 %	19.59 % 13.93 %	3.80 % 3.89 %
Cosmetics & Beauty	35614 5459	27346 4481	6952 760	1316 218	76.78 % 82.08 %	19.52 % 13.92 %	3.70 % 3.99 %
Food & Drink	35826 5286	28614 4509	6027 615	1185 162	79.87 % 85.30 %	16.82 % 11.63 %	3.31 % 3.06 %
Home & Garden	36118 5504	28804 4690	6127 635	1187 179	79.75 % 85.21 %	16.96 % 11.54 %	3.29 % 3.25 %
Finance	35456 5547	26140 4403	7869 882	1447 262	73.73 % 79.38 %	22.19 % 15.90 %	4.08 % 4.72 %
Health	35790 5399	26684 4378	7721 795	1385 226	74.56 % 81.09 %	21.57 % 14.72 %	3.87 % 4.19 %
Pets	34844 5541	27582 4634	6029 706	1233 201	79.16 % 83.63 %	17.30 % 12.74 %	3.54 % 3.63 %
Sport & Fitness	35117 5361	26688 4375	7054 794	1375 192	76.00 % 81.61 %	20.09 % 14.81 %	3.92 % 3.58 %
Job & Career	35501 5466	26626 4371	7410 862	1465 233	75.00 % 79.97 %	20.87 % 15.77 %	4.13 % 4.26 %
Dating	36543 5448	26278 4352	8743 862	1522 234	71.91 % 79.88 %	23.93 % 15.82 %	4.16 % 4.30 %
Other	35682 5596	28146 4670	6291 729	1245 197	78.88 % 83.45 %	17.63 % 13.03 %	3.49 % 3.52 %

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	44791 5436	32733 4170	10182 988	1876 278	73.08 % 76.71 %	22.73 % 18.18 %	4.19 % 5.11 %
Outlook Mail	44335 5238	32982 4220	9561 802	1792 216	74.39 % 80.57 %	21.57 % 15.31 %	4.04 % 4.12 %
Yahoo Mail	44700 5421	34131 4433	8856 778	1713 210	76.36 % 81.77 %	19.81 % 14.35 %	3.83 % 3.87 %
AOL Mail	45061 5516	34401 4503	8962 787	1698 226	76.34 % 81.64 %	19.89 % 14.27 %	3.77 % 4.10 %
Mail.com	44765 5408	34632 4479	8495 721	1638 208	77.36 % 82.82 %	18.98 % 13.33 %	3.66 % 3.85 %
Yandex Mail	44994 5347	33790 4318	9454 814	1750 215	75.10 % 80.76 %	21.01 % 15.22 %	3.89 % 4.02 %
GMX Mail	44717 5484	34679 4626	8463 665	1575 193	77.55 % 84.35 %	18.93 % 12.13 %	3.52 % 3.52 %
Zoho Mail	44954 5625	35195 4750	8260 689	1499 186	78.29 % 84.44 %	18.37 % 12.25 %	3.33 % 3.31 %
ProtonMail	44201 5409	34824 4615	7883 611	1494 183	78.79 % 85.32 %	17.83 % 11.30 %	3.38 % 3.38 %
Custom Mail	44405 5524	35482 4718	7474 628	1449 178	79.91 % 85.41 %	16.83 % 11.37 %	3.26 % 3.22 %
iCloud Mail	5451 5547	4230 4341	949 961	272 245	77.60 % 78.26 %	17.41 % 17.32 %	4.99 % 4.42 %
Tuta	5376 5570	4537 4705	666 682	173 183	84.39 % 84.47 %	12.39 % 12.24 %	3.22 % 3.29 %
Juno.com	5414 5443	4585 4635	642 627	187 181	84.69 % 85.16 %	11.86 % 11.52 %	3.45 % 3.33 %

Compare MailChimp with other providers

Compare the email deliverability of MailChimp with other providers.