Mailgun and Postmark Email Deliverability Comparison

In this comparison, the deliverability of Mailgun 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 Mailgun than for Postmark.

Emails Sent	Emails Inbox	Emails Spam	Emails Lost
8.801 8.760	7.331 7.088	1.140 1.300	330 372

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. Mailgun beats Postmark in this comparison.

Inbox (%)	Spam (%)	Lost (%)
83.30 % 80.91 %	12.95 % 14.84 %	3.75 % 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, Mailgun is the clear winner.

Category	Emails Sent	Emails Inbox	Emails Spam	Emails Lost	Inbox (%)	Spam (%)	Lost (%)
Clothing	688 680	588 565	77 90	23 25	85.47 % 83.09 %	11.19 % 13.24 %	3.34 % 3.68 %
Elektronics	679 698	580 582	82 94	17 22	85.42 % 83.38 %	12.08 % 13.47 %	2.50 % 3.15 %
Entertainment	694 677	573 548	91 102	30 27	82.56 % 80.95 %	13.11 % 15.07 %	4.32 % 3.99 %
Cosmetics & Beauty	679 634	558 506	89 99	32 29	82.18 % 79.81 %	13.11 % 15.62 %	4.71 % 4.57 %
Food & Drink	685 656	594 553	71 85	20 18	86.72 % 84.30 %	10.36 % 12.96 %	2.92 % 2.74 %
Home & Garden	686 697	588 580	77 88	21 29	85.71 % 83.21 %	11.22 % 12.63 %	3.06 % 4.16 %
Finance	639 724	517 555	93 123	29 46	80.91 % 76.66 %	14.55 % 16.99 %	4.54 % 6.35 %
Health	662 657	539 523	96 104	27 30	81.42 % 79.60 %	14.50 % 15.83 %	4.08 % 4.57 %
Pets	682 706	578 576	81 100	23 30	84.75 % 81.59 %	11.88 % 14.16 %	3.37 % 4.25 %
Sport & Fitness	705 621	574 505	102 95	29 21	81.42 % 81.32 %	14.47 % 15.30 %	4.11 % 3.38 %
Job & Career	659 702	533 547	99 120	27 35	80.88 % 77.92 %	15.02 % 17.09 %	4.10 % 4.99 %
Dating	633 625	509 493	97 103	27 29	80.41 % 78.88 %	15.32 % 16.48 %	4.27 % 4.64 %
Other	710 683	600 555	85 97	25 31	84.51 % 81.26 %	11.97 % 14.20 %	3.52 % 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, Mailgun is better than Postmark.

Provider	Emails Sent	Emails Inbox	Emails Spam	Emails Lost	Inbox (%)	Spam (%)	Lost (%)
Gmail	688 691	527 516	120 135	41 40	76.60 % 74.67 %	17.44 % 19.54 %	5.96 % 5.79 %
Outlook Mail	635 657	522 514	88 109	25 34	82.20 % 78.23 %	13.86 % 16.59 %	3.94 % 5.18 %
Yahoo Mail	683 636	573 510	91 99	19 27	83.89 % 80.19 %	13.32 % 15.57 %	2.78 % 4.25 %
AOL Mail	736 656	605 526	99 102	32 28	82.20 % 80.18 %	13.45 % 15.55 %	4.35 % 4.27 %
Mail.com	676 679	573 557	82 96	21 26	84.76 % 82.03 %	12.13 % 14.14 %	3.11 % 3.83 %
Yandex Mail	650 590	532 467	96 98	22 25	81.85 % 79.15 %	14.77 % 16.61 %	3.38 % 4.24 %
GMX Mail	652 688	550 567	78 93	24 28	84.36 % 82.41 %	11.96 % 13.52 %	3.68 % 4.07 %
Zoho Mail	703 691	600 573	82 93	21 25	85.35 % 82.92 %	11.66 % 13.46 %	2.99 % 3.62 %
ProtonMail	656 678	558 580	71 81	27 17	85.06 % 85.55 %	10.82 % 11.95 %	4.12 % 2.51 %
Custom Mail	667 692	572 573	71 88	24 31	85.76 % 82.80 %	10.64 % 12.72 %	3.60 % 4.48 %
iCloud Mail	655 651	519 497	107 122	29 32	79.24 % 76.34 %	16.34 % 18.74 %	4.43 % 4.92 %
Tuta	721 746	616 623	82 95	23 28	85.44 % 83.51 %	11.37 % 12.73 %	3.19 % 3.75 %
Juno.com	679 705	584 585	73 89	22 31	86.01 % 82.98 %	10.75 % 12.62 %	3.24 % 4.40 %

Compare Mailgun with other providers

Compare the email deliverability of Mailgun with other providers.