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
61.809 455.754	53.094 344.481	6.813 93.172	1.902 18.101

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 (%)
85.90 % 75.58 %	11.02 % 20.44 %	3.08 % 3.97 %

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	4720 35042	4192 27485	419 6251	109 1306	88.81 % 78.43 %	8.88 % 17.84 %	2.31 % 3.73 %
Elektronics	4776 34751	4171 26548	482 6901	123 1302	87.33 % 76.39 %	10.09 % 19.86 %	2.58 % 3.75 %
Entertainment	4756 35026	4077 26451	527 7165	152 1410	85.72 % 75.52 %	11.08 % 20.46 %	3.20 % 4.03 %
Cosmetics & Beauty	4777 35062	4088 26483	535 7197	154 1382	85.58 % 75.53 %	11.20 % 20.53 %	3.22 % 3.94 %
Food & Drink	4706 35174	4169 27683	421 6246	116 1245	88.59 % 78.70 %	8.95 % 17.76 %	2.46 % 3.54 %
Home & Garden	4845 35075	4282 27461	438 6299	125 1315	88.38 % 78.29 %	9.04 % 17.96 %	2.58 % 3.75 %
Finance	4786 35400	3975 25579	635 8325	176 1496	83.05 % 72.26 %	13.27 % 23.52 %	3.68 % 4.23 %
Health	4729 34611	3993 25334	571 7833	165 1444	84.44 % 73.20 %	12.07 % 22.63 %	3.49 % 4.17 %
Pets	4720 35515	4094 27532	471 6653	155 1330	86.74 % 77.52 %	9.98 % 18.73 %	3.28 % 3.74 %
Sport & Fitness	4840 35393	4094 26310	592 7624	154 1459	84.59 % 74.34 %	12.23 % 21.54 %	3.18 % 4.12 %
Job & Career	4734 34743	3959 25648	620 7574	155 1521	83.63 % 73.82 %	13.10 % 21.80 %	3.27 % 4.38 %
Dating	4657 35344	3875 25058	613 8702	169 1584	83.21 % 70.90 %	13.16 % 24.62 %	3.63 % 4.48 %
Other	4763 34618	4125 26909	489 6402	149 1307	86.61 % 77.73 %	10.27 % 18.49 %	3.13 % 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	4826 44239	3870 31905	742 10444	214 1890	80.19 % 72.12 %	15.38 % 23.61 %	4.43 % 4.27 %
Outlook Mail	4719 43937	3990 32041	586 9961	143 1935	84.55 % 72.92 %	12.42 % 22.67 %	3.03 % 4.40 %
Yahoo Mail	4812 44012	4106 33068	550 9170	156 1774	85.33 % 75.13 %	11.43 % 20.84 %	3.24 % 4.03 %
AOL Mail	4619 43244	3947 32467	531 8913	141 1864	85.45 % 75.08 %	11.50 % 20.61 %	3.05 % 4.31 %
Mail.com	4838 44440	4174 33930	514 8781	150 1729	86.28 % 76.35 %	10.62 % 19.76 %	3.10 % 3.89 %
Yandex Mail	4778 44557	4004 32851	605 9829	169 1877	83.80 % 73.73 %	12.66 % 22.06 %	3.54 % 4.21 %
GMX Mail	4720 43833	4138 33394	446 8799	136 1640	87.67 % 76.18 %	9.45 % 20.07 %	2.88 % 3.74 %
Zoho Mail	4852 44280	4271 34245	455 8448	126 1587	88.03 % 77.34 %	9.38 % 19.08 %	2.60 % 3.58 %
ProtonMail	4705 44514	4161 34397	414 8521	130 1596	88.44 % 77.27 %	8.80 % 19.14 %	2.76 % 3.59 %
Custom Mail	4642 44546	4125 34950	410 8021	107 1575	88.86 % 78.46 %	8.83 % 18.01 %	2.31 % 3.54 %
iCloud Mail	4873 4663	3982 3484	710 923	181 256	81.72 % 74.72 %	14.57 % 19.79 %	3.71 % 5.49 %
Tuta	4698 4649	4132 3767	438 685	128 197	87.95 % 81.03 %	9.32 % 14.73 %	2.72 % 4.24 %
Juno.com	4727 4840	4194 3982	412 677	121 181	88.72 % 82.27 %	8.72 % 13.99 %	2.56 % 3.74 %

Compare Amazon SES with other providers

Compare the email deliverability of Amazon SES with other providers.