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
394.406 179.720	302.081 146.263	78.208 27.085	14.117 5.862

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 % 81.38 %	19.83 % 15.07 %	3.58 % 3.26 %

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 13771	24204 11368	5178 1924	980 443	79.72 % 82.55 %	17.05 % 13.97 %	3.23 % 3.22 %
Elektronics	30287 13793	23385 11361	5902 1994	1000 419	77.21 % 82.37 %	19.49 % 14.46 %	3.30 % 3.04 %
Entertainment	30255 13904	23092 11280	6045 2142	1118 442	76.32 % 81.13 %	19.98 % 15.41 %	3.70 % 3.18 %
Cosmetics & Beauty	30425 13661	23232 11141	6099 2080	1094 426	76.36 % 81.55 %	20.05 % 15.23 %	3.60 % 3.12 %
Food & Drink	30373 13631	24085 11298	5283 1914	1005 382	79.30 % 82.88 %	17.39 % 14.04 %	3.31 % 2.80 %
Home & Garden	30268 13810	24131 11491	5167 1872	970 402	79.72 % 83.21 %	17.07 % 13.56 %	3.20 % 2.91 %
Finance	30282 13896	22132 11156	6922 2213	1228 515	73.09 % 80.28 %	22.86 % 15.93 %	4.06 % 3.71 %
Health	30386 13735	22511 11152	6731 2028	1144 476	74.08 % 81.19 %	22.15 % 14.77 %	3.76 % 3.47 %
Pets	30515 13907	24072 11417	5436 2026	1007 423	78.89 % 82.10 %	17.81 % 14.57 %	3.30 % 3.04 %
Sport & Fitness	30484 13962	23007 11255	6312 2211	1165 460	75.47 % 80.61 %	20.71 % 15.84 %	3.82 % 3.29 %
Job & Career	30364 13989	22710 11074	6456 2350	1198 516	74.79 % 79.16 %	21.26 % 16.80 %	3.95 % 3.69 %
Dating	30301 13712	21762 10807	7322 2331	1217 519	71.82 % 78.81 %	24.16 % 17.00 %	4.02 % 3.79 %
Other	30104 13949	23758 11463	5355 2000	991 439	78.92 % 82.18 %	17.79 % 14.34 %	3.29 % 3.15 %

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 13684	28873 10559	8892 2533	1517 552	73.50 % 77.16 %	22.64 % 18.51 %	3.86 % 4.03 %
Outlook Mail	38997 13512	28821 10759	8633 2207	1543 482	73.91 % 79.63 %	22.14 % 16.33 %	3.96 % 3.57 %
Yahoo Mail	40103 13609	30633 10973	8046 2145	1424 454	76.39 % 80.63 %	20.06 % 15.76 %	3.55 % 3.34 %
AOL Mail	39425 13641	30059 11026	7908 2083	1458 463	76.24 % 80.83 %	20.06 % 15.27 %	3.70 % 3.39 %
Mail.com	38624 13545	30060 11116	7211 1922	1353 436	77.83 % 82.07 %	18.67 % 14.19 %	3.50 % 3.22 %
Yandex Mail	38821 13459	29129 10814	8168 2148	1524 466	75.03 % 80.35 %	21.04 % 15.96 %	3.93 % 3.46 %
GMX Mail	39819 13715	30627 11253	7798 1976	1394 433	76.92 % 82.05 %	19.58 % 14.41 %	3.50 % 3.16 %
Zoho Mail	40117 13821	31303 11472	7430 1891	1384 408	78.03 % 83.00 %	18.52 % 13.68 %	3.45 % 2.95 %
ProtonMail	39371 13541	30858 11309	7262 1813	1251 403	78.38 % 83.52 %	18.45 % 13.39 %	3.18 % 2.98 %
Custom Mail	39847 13810	31718 11592	6860 1809	1269 402	79.60 % 83.94 %	17.22 % 13.10 %	3.18 % 2.91 %

Compare ConvertKit with other providers

Compare the email deliverability of ConvertKit with other providers.