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 Postmark than for SendGrid.

Emails Sent	Emails Inbox	Emails Spam	Emails Lost
44.308 44.630	36.117 35.409	6.404 7.341	1.787 1.880

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 SendGrid in this comparison.

Inbox (%)	Spam (%)	Lost (%)
81.51 % 79.34 %	14.45 % 16.45 %	4.03 % 4.21 %

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	3433 3531	2867 2886	434 517	132 128	83.51 % 81.73 %	12.64 % 14.64 %	3.85 % 3.63 %
Elektronics	3414 3448	2823 2744	466 545	125 159	82.69 % 79.58 %	13.65 % 15.81 %	3.66 % 4.61 %
Entertainment	3342 3446	2714 2717	492 576	136 153	81.21 % 78.85 %	14.72 % 16.72 %	4.07 % 4.44 %
Cosmetics & Beauty	3358 3476	2715 2760	496 576	147 140	80.85 % 79.40 %	14.77 % 16.57 %	4.38 % 4.03 %
Food & Drink	3326 3502	2816 2868	407 510	103 124	84.67 % 81.90 %	12.24 % 14.56 %	3.10 % 3.54 %
Home & Garden	3410 3408	2873 2774	419 494	118 140	84.25 % 81.40 %	12.29 % 14.50 %	3.46 % 4.11 %
Finance	3489 3412	2723 2617	579 632	187 163	78.05 % 76.70 %	16.60 % 18.52 %	5.36 % 4.78 %
Health	3338 3384	2671 2645	516 588	151 151	80.02 % 78.16 %	15.46 % 17.38 %	4.52 % 4.46 %
Pets	3502 3326	2892 2674	472 508	138 144	82.58 % 80.40 %	13.48 % 15.27 %	3.94 % 4.33 %
Sport & Fitness	3373 3524	2723 2753	521 619	129 152	80.73 % 78.12 %	15.45 % 17.57 %	3.82 % 4.31 %
Job & Career	3392 3437	2684 2661	555 640	153 136	79.13 % 77.42 %	16.36 % 18.62 %	4.51 % 3.96 %
Dating	3355 3383	2663 2600	554 618	138 165	79.37 % 76.85 %	16.51 % 18.27 %	4.11 % 4.88 %
Other	3576 3353	2953 2710	493 518	130 125	82.58 % 80.82 %	13.79 % 15.45 %	3.64 % 3.73 %

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 SendGrid.

Provider	Emails Sent	Emails Inbox	Emails Spam	Emails Lost	Inbox (%)	Spam (%)	Lost (%)
Gmail	3380 3332	2556 2455	635 701	189 176	75.62 % 73.68 %	18.79 % 21.04 %	5.59 % 5.28 %
Outlook Mail	3267 3377	2603 2603	527 611	137 163	79.68 % 77.08 %	16.13 % 18.09 %	4.19 % 4.83 %
Yahoo Mail	3432 3413	2776 2698	518 572	138 143	80.89 % 79.05 %	15.09 % 16.76 %	4.02 % 4.19 %
AOL Mail	3495 3581	2818 2809	522 606	155 166	80.63 % 78.44 %	14.94 % 16.92 %	4.43 % 4.64 %
Mail.com	3428 3414	2808 2740	481 537	139 137	81.91 % 80.26 %	14.03 % 15.73 %	4.05 % 4.01 %
Yandex Mail	3340 3442	2660 2664	534 617	146 161	79.64 % 77.40 %	15.99 % 17.93 %	4.37 % 4.68 %
GMX Mail	3391 3346	2828 2737	430 491	133 118	83.40 % 81.80 %	12.68 % 14.67 %	3.92 % 3.53 %
Zoho Mail	3521 3381	2938 2743	457 506	126 132	83.44 % 81.13 %	12.98 % 14.97 %	3.58 % 3.90 %
ProtonMail	3357 3475	2836 2866	398 494	123 115	84.48 % 82.47 %	11.86 % 14.22 %	3.66 % 3.31 %
Custom Mail	3365 3448	2852 2827	408 491	105 130	84.75 % 81.99 %	12.12 % 14.24 %	3.12 % 3.77 %
iCloud Mail	3409 3557	2622 2691	619 710	168 156	76.91 % 75.65 %	18.16 % 19.96 %	4.93 % 4.39 %
Tuta	3543 3433	2971 2774	456 510	116 149	83.86 % 80.80 %	12.87 % 14.86 %	3.27 % 4.34 %
Juno.com	3380 3431	2849 2802	419 495	112 134	84.29 % 81.67 %	12.40 % 14.43 %	3.31 % 3.91 %

Compare Postmark with other providers

Compare the email deliverability of Postmark with other providers.