Postmark and MailChimp Email Deliverability Comparison

Postmark

MailChimp

In this comparison, the deliverability of Postmark and MailChimp 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
63.445 64.544	50.822 51.065	11.778 12.507	1.354 1.462

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 (%)
80.10 % 79.12 %	18.56 % 19.38 %	2.13 % 2.27 %

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	4784 4875	3827 3825	896 979	102 106	80.00 % 78.46 %	18.73 % 20.08 %	2.13 % 2.17 %
Elektronics	4743 4838	3808 3830	875 942	101 103	80.29 % 79.16 %	18.45 % 19.47 %	2.13 % 2.13 %
Entertainment	5083 5193	4042 4062	963 1048	120 118	79.52 % 78.22 %	18.95 % 20.18 %	2.36 % 2.27 %
Cosmetics & Beauty	4728 4990	3806 3989	876 913	96 119	80.50 % 79.94 %	18.53 % 18.30 %	2.03 % 2.38 %
Food & Drink	4798 5230	3836 4120	913 1021	93 129	79.95 % 78.78 %	19.03 % 19.52 %	1.94 % 2.47 %
Home & Garden	4796 4733	3857 3704	863 949	104 111	80.42 % 78.26 %	17.99 % 20.05 %	2.17 % 2.35 %
Finance	4978 4973	4085 4052	845 855	103 106	82.06 % 81.48 %	16.97 % 17.19 %	2.07 % 2.13 %
Health	4709 4995	3895 4094	721 847	98 114	82.71 % 81.96 %	15.31 % 16.96 %	2.08 % 2.28 %
Pets	4983 4933	3962 3909	938 937	113 115	79.51 % 79.24 %	18.82 % 18.99 %	2.27 % 2.33 %
Sport & Fitness	5096 4958	4048 3915	976 983	108 109	79.43 % 78.96 %	19.15 % 19.83 %	2.12 % 2.20 %
Job & Career	4854 4998	3814 3859	983 1057	101 115	78.57 % 77.21 %	20.25 % 21.15 %	2.08 % 2.30 %
Dating	4857 4840	3741 3712	1049 1048	103 108	77.02 % 76.69 %	21.60 % 21.65 %	2.12 % 2.23 %
Other	5036 4988	4101 3994	880 928	112 109	81.43 % 80.07 %	17.47 % 18.60 %	2.22 % 2.19 %

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	4638 4820	3591 3701	1000 1051	93 100	77.43 % 76.78 %	21.56 % 21.80 %	2.01 % 2.07 %
Outlook Mail	4562 4592	3585 3603	909 943	101 99	78.58 % 78.46 %	19.93 % 20.54 %	2.21 % 2.16 %
Yahoo Mail	4625 4594	3657 3586	908 906	101 112	79.07 % 78.06 %	19.63 % 19.72 %	2.18 % 2.44 %
AOL Mail	4633 4861	3688 3820	873 969	95 111	79.60 % 78.58 %	18.84 % 19.93 %	2.05 % 2.28 %
Mail.com	4620 4827	3772 3873	766 880	97 112	81.65 % 80.24 %	16.58 % 18.23 %	2.10 % 2.32 %
Yandex Mail	4706 4728	3758 3693	882 953	101 115	79.86 % 78.11 %	18.74 % 20.16 %	2.15 % 2.43 %
GMX Mail	4690 4845	3679 3773	928 1031	111 99	78.44 % 77.87 %	19.79 % 21.28 %	2.37 % 2.04 %
Zoho Mail	4704 4651	3835 3739	817 866	99 115	81.53 % 80.39 %	17.37 % 18.62 %	2.10 % 2.47 %
ProtonMail	4536 4713	3702 3793	801 845	94 102	81.61 % 80.48 %	17.66 % 17.93 %	2.07 % 2.16 %
Custom Mail	4667 4655	3866 3809	748 772	103 96	82.84 % 81.83 %	16.03 % 16.58 %	2.21 % 2.06 %
iCloud Mail	4614 4525	3582 3464	966 1020	99 99	77.63 % 76.55 %	20.94 % 22.54 %	2.15 % 2.19 %
Tuta	4645 4762	3785 3840	801 848	99 116	81.49 % 80.64 %	17.24 % 17.81 %	2.13 % 2.44 %
Juno.com	4779 4807	3901 3870	834 835	101 111	81.63 % 80.51 %	17.45 % 17.37 %	2.11 % 2.31 %
Mailfence	3026 3164	2421 2501	545 588	60 75	80.01 % 79.05 %	18.01 % 18.58 %	1.98 % 2.37 %

Compare Postmark with other providers

Compare the email deliverability of Postmark with other providers.