Is Constant Contact or Substack more popular?

Substack is used by more websites in our catalog: 551 use Constant Contact and 1,089 use Substack.

Does Constant Contact or Substack have higher-authority sites?

Substack sites have the higher median Ahrefs Domain Rating (Constant Contact: 32, Substack: 33).

Is Constant Contact or Substack growing faster?

Between 2026-06 and 2026-07, Constant Contact went from 0.06% to 0.06% of all tracked sites, while Substack went from 0.16% to 0.12%. Constant Contact is gaining ground faster in our index.

Can a site use both Constant Contact and Substack?

No. A site runs a single email / newsletter platform, so Constant Contact and Substack are mutually exclusive.

Where does this Constant Contact vs Substack data come from?

Adoption is counted from Site Stats Database's own crawl; Domain Rating comes from Ahrefs and traffic from DataForSEO. Figures reflect the sites we track and refresh at least monthly.

Constant Contact vs Substack — Site Stats Database

Constant Contact vs Substack

A side-by-side comparison of two email & newsletter platforms, based on the 128,885 Email Marketing sites tracked by Site Stats Database.

Last updated July 1, 2026

Metric	Constant Contact	Substack
Websites	551	1,089
Market share	0.43%	0.84%
Share of top 10K sites	0.05%	0.12%

Rank	#16	#8

Median DR	32	33

Average DR	34	34

Median keywords	1,413	1,250

Median referring domains	450	485

Median domain age	23 yrs	11 yrs

Average domain age	22 yrs	12 yrs

Average monthly traffic	66,577	95,722

Combined monthly traffic	36,683,852	104,241,674

constitutioncenter.org
LanguageEnglish
DR (Ahrefs)80
Total Keywords148,138
Referring Domains28,073
Domain Age29 yrs
Traffic (Jun 2026)7,621,258
Traffic Trend
TechnologyConstant Contact
womenshistory.org
LanguageEnglish
DR (Ahrefs)79
Total Keywords47,491
Referring Domains18,206
Domain Age17 yrs
Traffic (Jun 2026)3,101,291
Traffic Trend
Technology
specialolympicspa.org
LanguageEnglish
DR (Ahrefs)56
Total Keywords2,184
Referring Domains2,168
Domain Age26 yrs
Traffic (Jun 2026)1,399,729
Traffic Trend
Technology
fortworthstockyards.org
LanguageEnglish
DR (Ahrefs)69
Total Keywords17,055
Referring Domains3,610
Domain Age27 yrs
Traffic (Jun 2026)1,375,121
Traffic Trend
Technology
fdrlibrary.org
LanguageEnglish
DR (Ahrefs)73
Total Keywords17,948
Referring Domains6,183
Domain Age10 yrs
Traffic (Jun 2026)1,011,574
Traffic Trend
Technology
pathologyoutlines.com
LanguageEnglish
DR (Ahrefs)70
Total Keywords68,956
Referring Domains5,275
Domain Age24 yrs
Traffic (Jun 2026)731,795
Traffic Trend
Technology
visitsanjuans.com
LanguageEnglish
DR (Ahrefs)67
Total Keywords9,674
Referring Domains2,911
Domain Age22 yrs
Traffic (Jun 2026)699,588
Traffic Trend
Technology
constantcontact.com
LanguageEnglish
DR (Ahrefs)92
Total Keywords107,837
Referring Domains249,011
Domain Age27 yrs
Traffic (Jun 2026)670,180
Traffic Trend
Technology
boulderdowntown.com
LanguageEnglish
DR (Ahrefs)66
Total Keywords13,717
Referring Domains2,469
Domain Age24 yrs
Traffic (Jun 2026)575,660
Traffic Trend
Technology
wholegrainscouncil.org
LanguageEnglish
DR (Ahrefs)75
Total Keywords14,787
Referring Domains6,375
Domain Age23 yrs
Traffic (Jun 2026)543,608
Traffic Trend
Technology

Website	Language	DR (Ahrefs)	Total Keywords	Referring Domains	Domain Age	Traffic (Jun 2026)	Traffic Trend	Technology
constitutioncenter.org	English	80	148,138	28,073	29 yrs	7,621,258		Constant Contact

alexreichek.com
LanguageEnglish
DR (Ahrefs)10
Total Keywords19,565
Referring Domains103
Domain Age4 yrs
Traffic (Jun 2026)21,583,539
Traffic Trend
TechnologySubstack
horoscope.com
LanguageEnglish
DR (Ahrefs)69
Total Keywords99,094
Referring Domains7,518
Domain Age28 yrs
Traffic (Jun 2026)10,014,480
Traffic Trend
Technology
themodernproper.com
LanguageEnglish
DR (Ahrefs)71
Total Keywords229,805
Referring Domains18,216
Domain Age12 yrs
Traffic (Jun 2026)9,197,484
Traffic Trend
Technology
sporked.com
LanguageEnglish
DR (Ahrefs)62
Total Keywords282,875
Referring Domains4,981
Domain Age17 yrs
Traffic (Jun 2026)7,331,097
Traffic Trend
Technology
astrology.com
LanguageEnglish
DR (Ahrefs)73
Total Keywords119,893
Referring Domains12,321
Domain Age30 yrs
Traffic (Jun 2026)2,568,567
Traffic Trend
Technology
labnol.org
LanguageEnglish
DR (Ahrefs)77
Total Keywords24,212
Referring Domains20,681
Domain Age19 yrs
Traffic (Jun 2026)2,038,273
Traffic Trend
Technology
tarheeltimes.com
LanguageHindi
DR (Ahrefs)35
Total Keywords32,038
Referring Domains4,565
Domain Age21 yrs
Traffic (Jun 2026)1,553,219
Traffic Trend
Technology
pensador.com
LanguagePortuguese
DR (Ahrefs)76
Total Keywords123,585
Referring Domains13,547
Domain Age26 yrs
Traffic (Jun 2026)1,501,577
Traffic Trend
Technology
healthynibblesandbits.com
LanguageEnglish
DR (Ahrefs)64
Total Keywords33,219
Referring Domains6,043
Domain Age12 yrs
Traffic (Jun 2026)1,185,989
Traffic Trend
Technology
drawingsof.com
LanguageEnglish
DR (Ahrefs)33
Total Keywords16,028
Referring Domains678
Domain Age6 yrs
Traffic (Jun 2026)1,174,609
Traffic Trend
Technology