ConvertKit and Postmark Email Deliverability Comparison

In this comparison, the deliverability of ConvertKit 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 ConvertKit.

Emails Sent	Emails Inbox	Emails Spam	Emails Lost
394.406 8.760	302.081 7.088	78.208 1.300	14.117 372

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 ConvertKit in this comparison.

Inbox (%)	Spam (%)	Lost (%)
76.59 % 80.91 %	19.83 % 14.84 %	3.58 % 4.25 %

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	30362 680	24204 565	5178 90	980 25	79.72 % 83.09 %	17.05 % 13.24 %	3.23 % 3.68 %
Elektronics	30287 698	23385 582	5902 94	1000 22	77.21 % 83.38 %	19.49 % 13.47 %	3.30 % 3.15 %
Entertainment	30255 677	23092 548	6045 102	1118 27	76.32 % 80.95 %	19.98 % 15.07 %	3.70 % 3.99 %
Cosmetics & Beauty	30425 634	23232 506	6099 99	1094 29	76.36 % 79.81 %	20.05 % 15.62 %	3.60 % 4.57 %
Food & Drink	30373 656	24085 553	5283 85	1005 18	79.30 % 84.30 %	17.39 % 12.96 %	3.31 % 2.74 %
Home & Garden	30268 697	24131 580	5167 88	970 29	79.72 % 83.21 %	17.07 % 12.63 %	3.20 % 4.16 %
Finance	30282 724	22132 555	6922 123	1228 46	73.09 % 76.66 %	22.86 % 16.99 %	4.06 % 6.35 %
Health	30386 657	22511 523	6731 104	1144 30	74.08 % 79.60 %	22.15 % 15.83 %	3.76 % 4.57 %
Pets	30515 706	24072 576	5436 100	1007 30	78.89 % 81.59 %	17.81 % 14.16 %	3.30 % 4.25 %
Sport & Fitness	30484 621	23007 505	6312 95	1165 21	75.47 % 81.32 %	20.71 % 15.30 %	3.82 % 3.38 %
Job & Career	30364 702	22710 547	6456 120	1198 35	74.79 % 77.92 %	21.26 % 17.09 %	3.95 % 4.99 %
Dating	30301 625	21762 493	7322 103	1217 29	71.82 % 78.88 %	24.16 % 16.48 %	4.02 % 4.64 %
Other	30104 683	23758 555	5355 97	991 31	78.92 % 81.26 %	17.79 % 14.20 %	3.29 % 4.54 %

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 ConvertKit.

Provider	Emails Sent	Emails Inbox	Emails Spam	Emails Lost	Inbox (%)	Spam (%)	Lost (%)
Gmail	39282 691	28873 516	8892 135	1517 40	73.50 % 74.67 %	22.64 % 19.54 %	3.86 % 5.79 %
Outlook Mail	38997 657	28821 514	8633 109	1543 34	73.91 % 78.23 %	22.14 % 16.59 %	3.96 % 5.18 %
Yahoo Mail	40103 636	30633 510	8046 99	1424 27	76.39 % 80.19 %	20.06 % 15.57 %	3.55 % 4.25 %
AOL Mail	39425 656	30059 526	7908 102	1458 28	76.24 % 80.18 %	20.06 % 15.55 %	3.70 % 4.27 %
Mail.com	38624 679	30060 557	7211 96	1353 26	77.83 % 82.03 %	18.67 % 14.14 %	3.50 % 3.83 %
Yandex Mail	38821 590	29129 467	8168 98	1524 25	75.03 % 79.15 %	21.04 % 16.61 %	3.93 % 4.24 %
GMX Mail	39819 688	30627 567	7798 93	1394 28	76.92 % 82.41 %	19.58 % 13.52 %	3.50 % 4.07 %
Zoho Mail	40117 691	31303 573	7430 93	1384 25	78.03 % 82.92 %	18.52 % 13.46 %	3.45 % 3.62 %
ProtonMail	39371 678	30858 580	7262 81	1251 17	78.38 % 85.55 %	18.45 % 11.95 %	3.18 % 2.51 %
Custom Mail	39847 692	31718 573	6860 88	1269 31	79.60 % 82.80 %	17.22 % 12.72 %	3.18 % 4.48 %

Compare ConvertKit with other providers

Compare the email deliverability of ConvertKit with other providers.