Mailgun
Amazon SES
SendGrid
MailBaby
SMTP2GO
Mandrill
Postmark (ActiveCampaign) MX
MailerSend
Tencent GlobalMail
SMTP.com
ZeptoMail
SparkPost
Sales outreach
All 25,871 of these sites already run AuthSMTP, with the construction segment leading at 419 sites. Pitch the products and services that fit that exact stack.
Websites using AuthSMTP
MX & Email Hosting Services SMTP Service Visit website
AuthSMTP is an authenticated SMTP email relay service designed for e-commerce websites, mailing lists, and email applications.
Up to 1M sites per list · Segment by country & TLD to cover the full footprint · Unlimited report rebuilds for 1 month
- Live websites detected
- 25,871
- Countries with usage
- 134
- Top market: United States
- 🇺🇸 39.1%
AuthSMTP global heatmap
darker = more sitesAuthSMTP usage by country
by sites detected-
01 🇺🇸 United States 10,071 39.1%
-
02 🇬🇧 United Kingdom 8,172 31.7%
-
03 🇳🇱 Netherlands 1,588 6.2%
-
04 🇨🇦 Canada 1,107 4.3%
-
05 🇫🇷 France 601 2.3%
-
06 🇮🇪 Ireland 469 1.8%
-
07 🇦🇺 Australia 455 1.8%
-
08 🇮🇹 Italy 440 1.7%
-
09 🇩🇪 Germany 394 1.5%
-
10 🇸🇪 Sweden 304 1.2%
And 124 more countries in the full dataset.
Need every AuthSMTP site in one market? Unlock AuthSMTP once and rebuild filtered reports as often as you like for a month: by country, TLD, or stack combination, each with up to 20 data points per site.
Start from $39/moAuthSMTP usage by country group
by sites detected-
01 English-Speaking Countries 33 countries 20,712 80.4%
-
02 Western Europe 22 countries 13,075 50.8%
-
03 North America 3 countries 11,179 43.4%
-
04 European Union (EU) 27 countries 4,772 18.5%
-
05 Benelux 3 countries 1,884 7.3%
-
06 French-Speaking Countries 15 countries 1,107 4.3%
-
07 Asia-Pacific (APAC) 23 countries 854 3.3%
-
08 DACH 4 countries 610 2.4%
-
09 Oceania 5 countries 563 2.2%
-
10 Nordics 5 countries 503 2%
Country groups overlap: a country can belong to several at once (Germany counts toward Europe, Western Europe, the EU and DACH). Percentages are each group's share of the 25,749 sites with a known country, so they describe overlapping views of the same data and do not add up to 100%.
Top websites using AuthSMTP
by popularity| # | Website | Popularity | StackSpend | Country | TLD |
|---|---|---|---|---|---|
| 01 |
 eventbrite.com
|
474 | $465K+ | 🇺🇸 United States | com |
| 02 |
 abc.es
|
1,034 | $1.77M+ | 🇪🇸 Spain | es |
| 03 |
 marksandspencer.com
|
1,186 | $1.04M+ | 🇬🇧 United Kingdom | com |
| 04 |
 irishtimes.com
|
3,337 | $685K+ | 🇮🇪 Ireland | com |
| 05 |
 eventbrite.co.uk
|
3,394 | $9.57K+ | 🇬🇧 United Kingdom | uk |
| 06 |
 manoramaonline.com
|
4,671 | $150K+ | 🇮🇳 India | com |
| 07 |
 hola.com
|
4,970 | $788K+ | 🇪🇸 Spain | com |
| 08 |
 thetrainline.com
|
5,048 | $467K+ | 🇬🇧 United Kingdom | com |
| 09 |
 larazon.es
|
5,289 | $113K+ | 🇪🇸 Spain | es |
| 10 |
 gulfnews.com
|
5,575 | $241K+ | 🇦🇪 United Arab Emirates | com |
| 11 |
 zoopla.co.uk
|
5,945 | $120K+ | 🇬🇧 United Kingdom | uk |
| 12 |
 elcorreo.com
|
6,667 | $1.03M+ | 🇪🇸 Spain | com |
| 13 |
 oem.com.mx
|
7,020 | $145K+ | 🇲🇽 Mexico | mx |
| 14 | brinkpos.net | 7,098 | $12.12K+ | 🇺🇸 United States | net |
| 15 |
 sleepnumber.com
|
7,369 | $85.71K+ | 🇺🇸 United States | com |
| 16 |
 lotterypost.com
|
8,187 | $3.22K+ | 🇨🇳 China | com |
| 17 | premierbet.com | 8,314 | $1.87K+ | 🇬🇧 United Kingdom | com |
| 18 | anandabazar.com | 8,674 | $96.74K+ | 🇮🇳 India | com |
| 19 |
 lokmat.com
|
8,908 | $372K+ | 🇮🇳 India | com |
| 20 |
 supersportbet.com
|
9,345 | $95.34K+ | 🇿🇦 South Africa | com |
This is 20 of 25,871 websites. Download up to 1M sites per list as CSV, enriched with firmographics.
Companies using AuthSMTP
sample, enriched| Company | Website | Employees | Industry | Country | Founded |
|---|---|---|---|---|---|
| Rupert Brooke |
 rupertbrooke.com
|
- | - | 🇬🇧 United Kingdom | - |
| Prénatal |
 prenatal.nl
|
501-1000 | Retail Apparel and Fashion | 🇳🇱 Netherlands | - |
| Leonardo Hotels Uk & Ireland |
 leonardohotels.co.uk
|
5001-10000 | Hospitality | 🇮🇪 Ireland | - |
| Keenan Recruitment |
 keenanrecruitment.co.uk
|
201-500 | Staffing and Recruiting | 🇬🇧 United Kingdom | 2013 |
| IBEW Local 11 |
 ibew11.org
|
10001+ | Construction | 🇺🇸 United States | 1942 |
| Fiddes & Son Ltd |
 fiddes.co.uk
|
11-50 | Retail | 🇬🇧 United Kingdom | 1896 |
| Heel |
 heel.com
|
1001-5000 | Pharmaceutical Manufacturing | 🇩🇪 Germany | 1936 |
| Partnership To End Addiction |
 drugfree.org
|
51-200 | Non-profit Organization Management | 🇺🇸 United States | - |
| HME Health B.V. |
 hmehealth.com
|
1-10 | Wellness and Fitness Services | 🇳🇱 Netherlands | 1990 |
| Dynamic Infusion |
 dynamicinfusion.com
|
51-200 | Hospitals and Health Care | 🇺🇸 United States | - |
| John F Hunt Group |
 johnfhunt.co.uk
|
501-1000 | Civil Engineering | 🇬🇧 United Kingdom | 1981 |
| SPF Danmark |
 spf.dk
|
201-500 | Truck Transportation | 🇩🇰 Denmark | 1971 |
| Environmental Solutions Group LLC |
 doveresg.com
|
5001-10000 | Machinery Manufacturing | 🇺🇸 United States | - |
| Yew Lee Seng Metal Pte Ltd |
 yewlee.com.sg
|
- | - | 🇺🇳 - | - |
| Van Der Kreeft BV - Heftruck.com |
 heftruck.com
|
10001+ | Transportation, Logistics, Supply Chain and Storage | 🇳🇱 Netherlands | 1937 |
| Professional Physical Therapy |
 professionalpt.com
|
1001-5000 | health, wellness and fitness | 🇺🇸 United States | 1998 |
| Dataflow Networks |
 dfn.co
|
1-10 | Computer Networking Products | 🇺🇸 United States | - |
| IlliquidX |
 illiquidx.com
|
11-50 | Financial Services | 🇬🇧 United Kingdom | 2009 |
| Banbury RUFC |
 banburyrufc.co.uk
|
- | IT Services and IT Consulting | 🇬🇧 United Kingdom | - |
| Vans |
 vans.com
|
10001+ | Retail | 🇺🇸 United States | 1966 |
| Renshaw Bay LLP | renshawbay.com | 1-10 | Investment Management | 🇬🇧 United Kingdom | 2011 |
| BLANCO Group |
 blanco.com
|
1001-5000 | Manufacturing | 🇩🇪 Germany | 1925 |
| Auburn Manufacturing, Inc |
 auburnmfg.com
|
51-200 | Textile Manufacturing | 🇺🇸 United States | - |
| CITY OF LAWRENCE MA |
 cityoflawrence.com
|
5001-10000 | Government Administration | 🇺🇸 United States | 1853 |
| Bolton Adhesives |
 boltonadhesives.com
|
501-1000 | Consumer Goods | 🇳🇱 Netherlands | - |
| Admiral Inn |
 admiralinn.com
|
11-50 | Real Estate | 🇺🇳 - | - |
| Sethness Roquette |
 sethness-roquette.com
|
201-500 | Food and Beverage Manufacturing | 🇫🇷 France | 1880 |
| The Gideons International In Nederland |
 gideons.nl
|
10001+ | Non-profit Organizations | 🇺🇳 - | - |
| Mahindra Holidays & Resorts India Limited |
 clubmahindra.com
|
5001-10000 | Hospitality | 🇮🇳 India | - |
| Cite Marine | cite-marine.fr | 1001-5000 | Food Production | 🇫🇷 France | 1990 |
| The Tudor Rose Tearooms & Garden |
 tudorrosetearooms.com
|
- | - | 🇬🇧 United Kingdom | - |
| B&W Equine Hospital |
 bwequinevets.co.uk
|
51-200 | Veterinary Services | 🇺🇳 - | - |
| Embrace Studios |
 embrace-studios.com
|
1-10 | Individual and Family Services | 🇺🇸 United States | - |
| EQ Building Performance Inc |
 eqbuilding.com
|
11-50 | Construction | 🇨🇦 Canada | - |
| PLUS (Providence LINC United Services) |
 plus-services.org
|
201-500 | Non-profit Organizations | 🇬🇧 United Kingdom | 1993 |
| Episcopal Communities & Services |
 ecsforseniors.org
|
501-1000 | Non-profit Organizations | 🇺🇸 United States | 1923 |
| DRAGONFLY PRESENTATION GRAPHICS LIMITED | dragonflypg.co.uk | 1-10 | Graphic Design | 🇬🇧 United Kingdom | - |
| The Horatio Motel |
 thehoratio.com.au
|
11-50 | Hospitality | 🇦🇺 Australia | 1996 |
| Rångedala Plantskola |
 rangedala.nu
|
- | - | 🇸🇪 Sweden | - |
| Costain Group Plc |
 costain.com
|
1001-5000 | Civil Engineering | 🇬🇧 United Kingdom | 1865 |
A sample of enriched company profiles. Full exports include company, social, and spend signals on every domain.
AuthSMTP usage by industry
by TLD segment-
01 Construction 419 10.7%
-
02 IT Services and IT Consulting 360 9.2%
-
03 Hospitality 315 8.1%
-
04 Staffing and Recruiting 233 6%
-
05 Software Development 229 5.9%
-
06 Financial Services 229 5.9%
-
07 Real Estate 216 5.5%
-
08 Retail 206 5.3%
-
09 Hospitals and Health Care 186 4.8%
-
10 Non-profit Organizations 176 4.5%
AuthSMTP industry distribution chart
share by domain segmentAuthSMTP users by company revenue
4,337 companiesTechnologies related to AuthSMTP
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Selling Mailgun, Amazon SES, or another SMTP Service product? These 25.87K AuthSMTP users are your displacement audience, filterable by country and company size.
Market research
Top markets for AuthSMTP: United States (39.1%), United Kingdom (31.7%), Netherlands (6.2%). Size the SMTP Service market by geography before you build or invest.
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