Postmark and SendGrid Email Deliverability Comparison

In this comparison, the deliverability of Postmark and SendGrid 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 SendGrid than for Postmark.

Emails Sent	Emails Inbox	Emails Spam	Emails Lost
8.760 8.948	7.088 7.254	1.300 1.355	372 339

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. SendGrid beats Postmark in this comparison.

Inbox (%)	Spam (%)	Lost (%)
80.91 % 81.07 %	14.84 % 15.14 %	4.25 % 3.79 %

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, SendGrid is the clear winner.

Category	Emails Sent	Emails Inbox	Emails Spam	Emails Lost	Inbox (%)	Spam (%)	Lost (%)
Clothing	680 729	565 605	90 100	25 24	83.09 % 82.99 %	13.24 % 13.72 %	3.68 % 3.29 %
Elektronics	698 713	582 583	94 102	22 28	83.38 % 81.77 %	13.47 % 14.31 %	3.15 % 3.93 %
Entertainment	677 684	548 553	102 107	27 24	80.95 % 80.85 %	15.07 % 15.64 %	3.99 % 3.51 %
Cosmetics & Beauty	634 667	506 542	99 106	29 19	79.81 % 81.26 %	15.62 % 15.89 %	4.57 % 2.85 %
Food & Drink	656 714	553 590	85 95	18 29	84.30 % 82.63 %	12.96 % 13.31 %	2.74 % 4.06 %
Home & Garden	697 682	580 568	88 91	29 23	83.21 % 83.28 %	12.63 % 13.34 %	4.16 % 3.37 %
Finance	724 697	555 542	123 118	46 37	76.66 % 77.76 %	16.99 % 16.93 %	6.35 % 5.31 %
Health	657 665	523 525	104 106	30 34	79.60 % 78.95 %	15.83 % 15.94 %	4.57 % 5.11 %
Pets	706 664	576 552	100 92	30 20	81.59 % 83.13 %	14.16 % 13.86 %	4.25 % 3.01 %
Sport & Fitness	621 673	505 533	95 111	21 29	81.32 % 79.20 %	15.30 % 16.49 %	3.38 % 4.31 %
Job & Career	702 661	547 528	120 112	35 21	77.92 % 79.88 %	17.09 % 16.94 %	4.99 % 3.18 %
Dating	625 676	493 527	103 116	29 33	78.88 % 77.96 %	16.48 % 17.16 %	4.64 % 4.88 %
Other	683 723	555 606	97 99	31 18	81.26 % 83.82 %	14.20 % 13.69 %	4.54 % 2.49 %

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, SendGrid is better than Postmark.

Provider	Emails Sent	Emails Inbox	Emails Spam	Emails Lost	Inbox (%)	Spam (%)	Lost (%)
Gmail	691 693	516 519	135 139	40 35	74.67 % 74.89 %	19.54 % 20.06 %	5.79 % 5.05 %
Outlook Mail	657 665	514 522	109 111	34 32	78.23 % 78.50 %	16.59 % 16.69 %	5.18 % 4.81 %
Yahoo Mail	636 675	510 536	99 106	27 33	80.19 % 79.41 %	15.57 % 15.70 %	4.25 % 4.89 %
AOL Mail	656 720	526 574	102 113	28 33	80.18 % 79.72 %	15.55 % 15.69 %	4.27 % 4.58 %
Mail.com	679 654	557 543	96 90	26 21	82.03 % 83.03 %	14.14 % 13.76 %	3.83 % 3.21 %
Yandex Mail	590 716	467 558	98 118	25 40	79.15 % 77.93 %	16.61 % 16.48 %	4.24 % 5.59 %
GMX Mail	688 699	567 582	93 94	28 23	82.41 % 83.26 %	13.52 % 13.45 %	4.07 % 3.29 %
Zoho Mail	691 710	573 587	93 97	25 26	82.92 % 82.68 %	13.46 % 13.66 %	3.62 % 3.66 %
ProtonMail	678 666	580 560	81 88	17 18	85.55 % 84.08 %	11.95 % 13.21 %	2.51 % 2.70 %
Custom Mail	692 637	573 547	88 81	31 9	82.80 % 85.87 %	12.72 % 12.72 %	4.48 % 1.41 %
iCloud Mail	651 719	497 555	122 134	32 30	76.34 % 77.19 %	18.74 % 18.64 %	4.92 % 4.17 %
Tuta	746 692	623 579	95 92	28 21	83.51 % 83.67 %	12.73 % 13.29 %	3.75 % 3.03 %
Juno.com	705 702	585 592	89 92	31 18	82.98 % 84.33 %	12.62 % 13.11 %	4.40 % 2.56 %

Compare Postmark with other providers

Compare the email deliverability of Postmark with other providers.