Amazon SES and Constant Contact Email Deliverability Comparison

In this comparison, the deliverability of Amazon SES and Constant Contact 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 Amazon SES than for Constant Contact.

Emails Sent	Emails Inbox	Emails Spam	Emails Lost
44.328 438.027	37.888 330.244	5.018 90.425	1.422 17.358

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. Amazon SES beats Constant Contact in this comparison.

Inbox (%)	Spam (%)	Lost (%)
85.47 % 75.39 %	11.32 % 20.64 %	3.21 % 3.96 %

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, Amazon SES is the clear winner.

Category	Emails Sent	Emails Inbox	Emails Spam	Emails Lost	Inbox (%)	Spam (%)	Lost (%)
Clothing	3367 33667	2974 26349	308 6066	85 1252	88.33 % 78.26 %	9.15 % 18.02 %	2.52 % 3.72 %
Elektronics	3485 33415	3026 25454	361 6709	98 1252	86.83 % 76.18 %	10.36 % 20.08 %	2.81 % 3.75 %
Entertainment	3424 33654	2918 25335	388 6954	118 1365	85.22 % 75.28 %	11.33 % 20.66 %	3.45 % 4.06 %
Cosmetics & Beauty	3469 33691	2956 25389	398 6984	115 1318	85.21 % 75.36 %	11.47 % 20.73 %	3.32 % 3.91 %
Food & Drink	3318 33730	2931 26488	305 6044	82 1198	88.34 % 78.53 %	9.19 % 17.92 %	2.47 % 3.55 %
Home & Garden	3457 33744	3035 26361	322 6115	100 1268	87.79 % 78.12 %	9.31 % 18.12 %	2.89 % 3.76 %
Finance	3435 34034	2838 24516	468 8084	129 1434	82.62 % 72.03 %	13.62 % 23.75 %	3.76 % 4.21 %
Health	3419 33220	2870 24247	426 7604	123 1369	83.94 % 72.99 %	12.46 % 22.89 %	3.60 % 4.12 %
Pets	3333 34152	2878 26407	343 6455	112 1290	86.35 % 77.32 %	10.29 % 18.90 %	3.36 % 3.78 %
Sport & Fitness	3464 34038	2918 25245	435 7395	111 1398	84.24 % 74.17 %	12.56 % 21.73 %	3.20 % 4.11 %
Job & Career	3415 33428	2847 24634	456 7343	112 1451	83.37 % 73.69 %	13.35 % 21.97 %	3.28 % 4.34 %
Dating	3331 34008	2758 24034	448 8468	125 1506	82.80 % 70.67 %	13.45 % 24.90 %	3.75 % 4.43 %
Other	3411 33246	2939 25785	360 6204	112 1257	86.16 % 77.56 %	10.55 % 18.66 %	3.28 % 3.78 %

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, Amazon SES is better than Constant Contact.

Provider	Emails Sent	Emails Inbox	Emails Spam	Emails Lost	Inbox (%)	Spam (%)	Lost (%)
Gmail	3497 42858	2784 30887	547 10167	166 1804	79.61 % 72.07 %	15.64 % 23.72 %	4.75 % 4.21 %
Outlook Mail	3327 42630	2787 31015	424 9740	116 1875	83.77 % 72.75 %	12.74 % 22.85 %	3.49 % 4.40 %
Yahoo Mail	3487 42656	2963 31978	406 8946	118 1732	84.97 % 74.97 %	11.64 % 20.97 %	3.38 % 4.06 %
AOL Mail	3283 41862	2790 31371	390 8692	103 1799	84.98 % 74.94 %	11.88 % 20.76 %	3.14 % 4.30 %
Mail.com	3482 43040	2979 32797	383 8571	120 1672	85.55 % 76.20 %	11.00 % 19.91 %	3.45 % 3.88 %
Yandex Mail	3405 43141	2837 31731	444 9594	124 1816	83.32 % 73.55 %	13.04 % 22.24 %	3.64 % 4.21 %
GMX Mail	3320 42456	2898 32271	322 8603	100 1582	87.29 % 76.01 %	9.70 % 20.26 %	3.01 % 3.73 %
Zoho Mail	3513 42893	3087 33094	337 8256	89 1543	87.87 % 77.15 %	9.59 % 19.25 %	2.53 % 3.60 %
ProtonMail	3388 43164	2988 33274	307 8345	93 1545	88.19 % 77.09 %	9.06 % 19.33 %	2.74 % 3.58 %
Custom Mail	3372 43176	2983 33800	307 7842	82 1534	88.46 % 78.28 %	9.10 % 18.16 %	2.43 % 3.55 %
iCloud Mail	3517 3319	2862 2465	527 667	128 187	81.38 % 74.27 %	14.98 % 20.10 %	3.64 % 5.63 %
Tuta	3361 3385	2943 2739	320 508	98 138	87.56 % 80.92 %	9.52 % 15.01 %	2.92 % 4.08 %
Juno.com	3376 3447	2987 2822	304 494	85 131	88.48 % 81.87 %	9.00 % 14.33 %	2.52 % 3.80 %

Compare Amazon SES with other providers

Compare the email deliverability of Amazon SES with other providers.