Technology · Business Email Hosting
4,019,271 websites in the live index use Office 365 Mail as of October 2026. Download the full list of Office 365 Mail websites with website, company, country and language.
SourceAs of October 30, 2026, TechLeads detects Office 365 Mail on 4,019,271 websites: 49.0% of Business Email Hosting detections, the 1st most-used of 34 Business Email Hosting technologies we track. Used by 15 of the top 1,000 ranked websites using Office 365 Mail.
Sample results for Office 365 Mail. Description is shown under each title.
| Rank | Website | Title · Description | Company | Country | Language |
|---|---|---|---|---|---|
| #97 | techcrunch.com | Pinterest Acquires Image Recognition And Visual Search Startup VisualGraph | TechCrunchPinterest has just acquired two-man startup VisualGraph, which creates machine vision, image recognition, and visual search technologies. The company's founder Kevin Jing and his partner David Liu are joining the Pinterest engineering team today. | TechCrunch | - | - |
| #206 | justgiving.com | Crowdfunding For Good From JustGivingIʼm raising money to undefined. Support this JustGiving Crowdfunding Page. | - | - | - |
| #248 | fortune.com | Fortune AnalyticsThe datasets behind Fortune's iconic rankings, including the Fortune 500. | - | - | - |
| #254 | disqus.com | #1 in audience engagement and community growth | DisqusMore publishers trust us to engage, grow, and understand their audiences than any other. Build your on-site community with Disqus. | - | - | - |
| #473 | blacklivesmatter.com | About Black Lives Matter - Black Lives MatterOur Vision Black Lives Matter imagines a world where Black people across the diaspora thrive, experience joy, and are not defined by their struggles. In pursuing liberation, we envision a future fully divested from police, prisons, and all punishment paradigms and which invests in justice, joy, and | - | - | - |
| #551 | globalnews.ca | Scott Thompson Show | Global NewsGlobal News | - | - | - |
| #564 | duckduckgo.com | DuckDuckGo - Protection. Privacy. Peace of mind.The Internet privacy company that empowers you to seamlessly take control of your personal information online, without any tradeoffs. | - | - | - |
| #582 | globalwellnessinstitute.org | Global Wellness InstituteThe Global Wellness Institute is a nonprofit organization with a mission to empower wellness worldwide by educating public and private sectors about preventative health and wellness. | Global Wellness Institute | US | en-US |
| #612 | variety.com | Variety Australia - The Business of EntertainmentThe Business of Entertainment | Variety Australia | - | - |
| #892 | udallas.edu | University of Dallas - The Catholic University for Independent ThinkersThe University of Dallas is a leading Catholic university widely recognized for academic excellence. It offers distinctive undergraduate and graduate programs in the liberal arts, sciences, business and ministry. | - | - | - |
| #959 | wmrt.com | - World Match Racing TourThe world's longest running professional sailing series featuring world championship events across the globe, officially sanctioned by World Sailing. | World Match Racing Tour | US | en-US |
| #1,048 | boe.es | BOE.es - Agencia Estatal Boletín Oficial del EstadoAgencia Estatal Boletín Oficial del Estado | - | - | - |
| #1,090 | tartecosmetics.com | High-Performance Makeup & Beauty Products | Tarte™#1 concealer brand & home of best-selling Shape Tape™ concealer. Shop our makeup featuring cruelty-free, vegan formulas & clinically proven ingredients. | Tarte Cosmetics | - | en |
| #1,422 | ccp-jp.com | 株式会社シー・シー・ピーおもちゃと家電の株式会社シー・シー・ピー | - | - | - |
| #1,905 | gentleid.org | Abbraccionese Maine Coon Cattery in Indiana - Kittens Available! indiana maine coon breeders maine coon breeders in indiana maine coon cattery indiana maine coon kittens for sale near Carmel INMaine Coon Cattery in Indiana offering healthy, well-socialized kittens. Contact us for available Maine Coon kittens! indiana maine coon breeders maine coon breeders in indiana maine coon cattery indiana maine coon kittens for sale near Westfield IN | Abbraccionese-GentleID | - | - |
| #2,134 | fdic.gov | FDIC: Federal Deposit Insurance CorporationThe FDIC is an independent agency created by Congress to maintain stability and public confidence in the nation's financial system. | - | - | en |
| #2,391 | escholarship.org | Journal of Writing Assessment | - | - | - |
| #2,663 | unece.org | UN/LOCODE Code List by Country and Territory | UNECE | - | - | - |
| #2,821 | coolors.co | Coolors - The super fast color palettes generator! | - | - | - |
| #2,905 | swagger.io | API Documentation & Design Tools for Teams | SwaggerSimplify API development for users, teams, and enterprises with our open source and professional toolset. Find out how Swagger can help you and get started today. | Swagger | - | en |
| #2,916 | inews.co.uk | The i Paper - Impartial news & intelligent debateThe i Paper: Impartial news & intelligent debate | - | - | - |
| #3,144 | iccwbo.org | ICC | International Chamber of CommerceInternational Chamber of Commerce is the voice of world business championing the global economy as a force for economic growth, job creation and prosperity. | ICC - International Chamber of Commerce | - | - |
| #3,187 | warwick.ac.uk | WarwickBlogs has been retiredInformation about the closure of WarwickBlogs | Warwick | GB | en-GB |
| #3,190 | unctad.org | BioTrade | UN Trade and Development (UNCTAD)We support countries to implement principles that conserve biodiversity, benefit local communities and enable them to diversify their export base through sustainable trade. Business | - | - | - |
| #3,234 | iapp.org | ResearchThe International Association of Privacy Professionals: Policy neutral, we are the world’s largest information privacy organization. | - | - | - |
Complete Office 365 Mail website dataset in CSV. One-time purchase.
Office 365 Mail dataset · CSV
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Access all 4,019,271 Office 365 Mail websites with complete contact information in your dashboard.
The most-used Business Email Hosting technologies in the TechLeads index, by number of websites. Office 365 Mail accounts for 49.0% of Business Email Hosting detections (4,019,271 websites).
| No. | Technology | Websites | Share of Business Email Hosting | Relative size |
|---|---|---|---|---|
| 01 | Microsoft Exchange Online | 3,766,240 | 45.9% | |
| 02 | Titan Email | 216,119 | 2.6% | |
| 03 | Namecheap Private Email | 93,539 | 1.1% | |
| 04 | Mimecast | 41,371 | 0.50% | |
| 05 | SpamExperts | 36,457 | 0.44% |
TechLeads scans public websites and identifies Office 365 Mail from signals in the page HTML, scripts, cookies, HTTP headers and DNS records. Website counts refresh daily; this page uses data from October 30, 2026. Counts only include websites we have scanned, so they can differ from other providers.
The TechLeads live index currently lists 4,019,271 websites using Office 365 Mail. Open the sample table on this page or download the lead list.
Office 365 Mail 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 Office 365 Mail.
Companies and websites using Office 365 Mail in the TechLeads index include techcrunch.com, justgiving.com, fortune.com, disqus.com, blacklivesmatter.com. The full list of 4,019,271 websites, with company name, country and language, is available as a CSV export.
By number of websites in the TechLeads index, the most-used Business Email Hosting alternatives to Office 365 Mail are Microsoft Exchange Online (3,766,240), Titan Email (216,119), Namecheap Private Email (93,539).
TechLeads scans public websites and matches Office 365 Mail by signals in the page HTML, scripts, cookies, HTTP headers and DNS records. Website counts refresh daily.
| 06 | SpaceMail | 8,251 | 0.10% |
|---|
| 07 | Zimbra | 4,557 | 0.06% |
|---|
| 08 | Everyone.net | 4,088 | 0.05% |
|---|
| 09 | BlueTie | 1,957 | 0.02% |
|---|
| 10 | Exclaimer | 1,592 | 0.02% |
|---|
Yes. A one-time Office 365 Mail dataset is $99 as a CSV. The Growth plan ($79/mo) covers 10 technologies with recurring exports, alerts and API access.
Top-ranked sites on Office 365 MailRank
Technologies most frequently detected on the same websites as Office 365 Mail. Counts are websites in the live index.
Sites where we first detected Office 365 Mail, by week (UTC, weeks start Monday). These are newly detected sites, and the counts follow our discovery coverage.
347,802
sites newly detected in the last 12 weeks
Email sent from this domain has records showing Office 365 usage.
Our comprehensive database contains 4,019,271 websites using Office 365 Mail, making it the most complete Office 365 Mail sites list available. This Office 365 Mail customer websites directory helps businesses detect websites using Office 365 Mail and identify potential leads.
Websites using Office 365 Mail commonly also use Zendesk, Haravan, Microsoft Exchange Online, Modernizr, jQuery — reflecting typical Office 365 Mail technology stacks.
Our Office 365 Mail technology detection system scans millions of websites to identify those powered by Office 365 Mail. This list of sites with Office 365 Mail includes detailed information such as company names, contact details, social media profiles, and website rankings. Whether you're looking for top websites with Office 365 Mail or exploring Office 365 Mail adoption trends, our database provides comprehensive insights.
Each entry in our Office 365 Mail 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 Office 365 Mail and reach out to potential customers or partners.
Get instant access to the full list of sites with Office 365 Mail in CSV format. Our dataset includes all 4,019,271 Office 365 Mail 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 Office 365 Mail powered websites.
