Technology · Email
43,301,214 websites in the live index use SPF as of October 2026. Download the full list of SPF websites with website, company, country and language.
SourceAs of October 28, 2026, TechLeads detects SPF on 43,301,214 websites.
Sample results for SPF. Description is shown under each title.
| Rank | Website | Title · Description | Company | Country | Language |
|---|---|---|---|---|---|
| #1 | localtreff.ch | LocaltreffLocal meeting or dating platform for the Swiss region, connecting people for local events and encounters. | Localtreff | CH | de |
| #2 | dasha.cl | DashaChilean site likely related to fashion, beauty, or personal care products, possibly a brand or e-commerce store. | Dasha | CL | es |
| #3 | dreamgreen.se | Dream GreenSwedish company focused on sustainable living, eco-friendly products, or green lifestyle services. | Dream Green | SE | sv |
| #4 | everestoutlet.com | Everest OutletOnline outlet store offering discounted outdoor gear, climbing equipment, or adventure apparel. | Everest Outlet | US | en |
| #5 | customslogic.co.uk | Customs LogicUK-based customs brokerage and logistics software or services for import/export compliance. | Customs Logic | GB | en |
| #6 | dondetoro.com | Don de ToroE-commerce site selling Spanish wines, gourmet foods, or bull-themed merchandise from Spain. | Don de Toro | ES | es |
| #7 | guitargeargiveaway.co.uk | Guitar Gear GiveawayUK site hosting giveaways and contests for guitar equipment, pedals, and music gear. | Guitar Gear Giveaway | GB | en |
| #8 | dr-ploessner.de | Dr. PlößnerGerman medical practice or clinic run by Dr. Plößner, likely specializing in general medicine or dermatology. | Dr. Plößner | DE | de |
| #9 | colabran.com | ColabranBrand offering health supplements, bran-based products, or collaborative brand platform. | Colabran | US | en |
| #10 | apiecetoourpuzzle.com | A Piece to Our PuzzleNon-profit or support site for autism, adoption, or family puzzle-themed awareness and resources. | A Piece to Our Puzzle | US | en |
| #11 | andysgreatescape.com | Andy's Great EscapeEscape room business or adventure game center named after Andy, offering themed challenges. | Andy's Great Escape | US | en |
| #12 | coregraphicsus.com | Core Graphics USUS-based graphic design, printing, or signage company specializing in core visual services. | Core Graphics | US | en |
| #13 | tweirddesign.com | T Weir DesignDesign studio or agency offering web design, graphic design, or creative services. | T Weir Design | US | en |
| #14 | ecoinfaq.org | Ecoin FAQInformational site providing FAQs on eCoin cryptocurrency, blockchain, or eco-friendly digital currencies. | Ecoin | US | en |
| #15 | tricitype.com | Tri City PEPhysical education, fitness, or sports services company serving the Tri-City area. | Tri City PE | US | en |
| #16 | bichartist.com | Bich ArtistPortfolio or services website for an artist named Bich | Bich Artist | US | en |
| #17 | astoria-eats.com | Astoria EatsFood delivery, restaurant, or dining service in Astoria | Astoria Eats | US | en |
| #18 | allstardom.com | All Star DomEntertainment, sports, or lifestyle website | All Star Dom | US | en |
| #19 | amazing-art.eu | Amazing ArtEuropean art gallery, marketplace, or creative services | Amazing Art | EU | en |
| #20 | employerpanelsonline.com | Employer Panels OnlineHR, recruitment, or employer management platform | Employer Panels Online | US | en |
| #21 | biorestaurant-mittenwald.de | Bio Restaurant MittenwaldOrganic restaurant located in Mittenwald, Germany | Bio Restaurant Mittenwald | DE | de |
| #22 | electa.info | ElectaInformation or services related to electrical or technology sector | Electa | US | en |
| #23 | laribafinance.ru | Lariba FinanceFinancial services or banking company in Russia | Lariba Finance | RU | ru |
| #24 | eldwickautos.uk | Eldwick AutosAutomotive dealership or repair service in Eldwick, UK | Eldwick Autos | GB | en |
| #25 | astercut.ru | AstercutCutting or manufacturing services company in Russia | Astercut | RU | ru |
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The most-used Email technologies in the TechLeads index, by number of websites.
| No. | Technology | Websites | Share of Email | Relative size |
|---|---|---|---|---|
| 01 | Google Workspace | 3,570,162 | 30.2% | |
| 02 | Microsoft 365 | 2,941,736 | 24.9% | |
| 03 | Hostinger Mail | 1,020,729 | 8.6% | |
| 04 | IONOS Mail | 701,102 | 5.9% | |
| 05 | Mailgun | 692,937 | 5.9% | |
| 06 | Amazon SES | 657,786 | 5.6% |
TechLeads scans public websites and identifies SPF from signals in the page HTML, scripts, cookies, HTTP headers and DNS records. Website counts refresh daily; this page uses data from October 28, 2026. Counts only include websites we have scanned, so they can differ from other providers.
The TechLeads live index currently lists 43,301,214 websites using SPF. Open the sample table on this page or download the lead list.
SPF is not in the HTTP Archive history extract (about 4,000 names). The live TechLeads catalog still tracks it among 12,000+ technologies.
See related technologies and co-occurrence on this page. Historical competitor charts appear when HTTP Archive covers SPF.
Companies and websites using SPF in the TechLeads index include localtreff.ch, dasha.cl, dreamgreen.se, everestoutlet.com, customslogic.co.uk. The full list of 43,301,214 websites, with company name, country and language, is available as a CSV export.
By number of websites in the TechLeads index, the most-used Email alternatives to SPF are Google Workspace (3,570,162), Microsoft 365 (2,941,736), Hostinger Mail (1,020,729).
TechLeads scans public websites and matches SPF by signals in the page HTML, scripts, cookies, HTTP headers and DNS records. Website counts refresh daily.
| 07 | Sendgrid | 532,624 | 4.5% |
|---|
| 08 | Yandex Mail | 206,969 | 1.7% |
|---|
| 09 | MailJet | 191,679 | 1.6% |
|---|
| 10 | Lolipop Mail | 139,556 | 1.2% |
|---|
Yes. A one-time SPF dataset is $29 as a CSV. The Growth plan ($79/mo) covers 10 technologies with recurring exports, alerts and API access.
Sender Policy Framework (SPF) is an email authentication protocol that prevents sender address forgery by specifying authorized mail servers in DNS TXT records.
Our comprehensive database contains 43,301,214 websites using SPF, making it the most complete SPF sites list available. This SPF customer websites directory helps businesses detect websites using SPF and identify potential leads.
Our SPF technology detection system scans millions of websites to identify those powered by SPF. This list of sites with SPF includes detailed information such as company names, contact details, social media profiles, and website rankings. Whether you're looking for top websites with SPF or exploring SPF adoption trends, our database provides comprehensive insights.
Each entry in our SPF sites list includes valuable data points: domain name, global ranking, company information, contact details, social media links. This makes it easy to detect websites using SPF and reach out to potential customers or partners.
Get instant access to the full list of sites with SPF in CSV format. Our dataset includes all 43,301,214 SPF customer websites with complete contact information, perfect for lead generation, market research, and competitive analysis. The data is regularly updated to ensure accuracy and includes the latest SPF powered websites.
