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Sites using Microsoft 365 / Outlook Mail

#9 of 3491 in Email Hosting Tracked since Apr 2026 Last seen: Sep 9, 2026
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24,916 sites

22,983 found by StackScope, 1,933 via launch platforms

StackScope Wider Web 18,536 StackScope Discovery (Indie) 4,447 Product Hunt 1,679 PeerPush 146 Hacker News 68 Other 40
  • StackScope Wider Web 18,536
  • StackScope Discovery (Indie) 4,447
  • Product Hunt 1,679
  • PeerPush 146
  • Hacker News 68
  • Other 40
View: All sites All launches Launch platforms StackScope Discovery StackScope Wider Web
Last 7 days 0.6% -0.0pp
Most used with Microsoft 365, Apache, jQuery
Top product types Finance, Developer Tools, Health
Green hosting 43% vs 46% avg

Microsoft 365 / Outlook Mail has been detected on 24,916 launches we've crawled, with 4458 of those in September 2026 (0.6% of the month's launches so far). The 7-day rolling share is 0.6%, roughly steady week on week. Most recent detection: kvalio — Sovereign cloud billing, metered in real time, today.

It's most commonly paired with Microsoft 365, Apache, and jQuery. By product type, the launches using it are most often Finance (16%), Developer Tools (14%), and Health (12%). By estimated origin, the United States leads (33%), ahead of India (20%). The 1,891 scored launches using Microsoft 365 / Outlook Mail average a StackScope score of 7.2 out of 10, against 6.4 across all launches we score.

What kind of products ship with Microsoft 365 / Outlook Mail

8,982 launches

Finance
16.49%
Developer Tools
13.53%
Health
12.22%
Productivity
11.56%
Marketing
11.18%
AI
7.19%
E-commerce
6.96%
Education
5.39%
Hiring & HR
5.01%
Content
3.23%
Social
2.59%
Games
1.88%
Design
1.54%
Directory
0.65%
Crypto
0.59%

Domain endings using Microsoft 365 / Outlook Mail

10 sites

  • .com 20.00%
  • .in 20.00%
  • .mx 20.00%
  • .ca 10.00%
  • .ch 10.00%
  • .sk 10.00%
  • .uk 10.00%

Country

581 of 24,916 sites, where we are confident of the country.

  • United States United States 33.05%
  • India India 19.62%
  • United Kingdom United Kingdom 17.73%
  • Australia Australia 4.65%
  • Canada Canada 2.41%
  • Germany Germany 2.41%
  • United Arab Emirates United Arab Emirates 2.07%
  • Singapore Singapore 1.38%
  • Netherlands Netherlands 1.20%
  • Sweden Sweden 1.03%
  • Ireland Ireland 0.86%
  • New Zealand New Zealand 0.86%
  • Portugal Portugal 0.86%
  • Brazil Brazil 0.69%
  • Spain Spain 0.69%

Share of new sites using Microsoft 365 / Outlook Mail

Each dot is one launch day. Line is the 7-day rolling average; weekly averages before June 2026.

0.6%
last 7 days
-0.0pp vs prior week
0.6%
September so far
4,458 of 694,538 sites
24,916
sites all time
since Apr 2026
Microsoft 365 / Outlook Mail daily detection trend Before 8 July 2026: launch platforms only. We began crawling the wider web on this date, so the cohort this share is measured against changes here. 5% 2% 0% Apr May Jun Jul Aug Sep Jul 1, 2026: Adoption figures now count launches from launch platforms. Use the source view to include StackScope Discovery. Jul 3, 2026: Email provider detection improved: providers identified from mail configuration are now caught on a site's first crawl. Earlier data may slightly undercount. Weekly averages before this point, daily after. Jun 11 · 19 / 577 = 3.3% Jun 12 · 4 / 448 = 0.9% Jun 13 · 3 / 380 = 0.8% Jun 14 · 6 / 345 = 1.7% Jun 15 · 6 / 532 = 1.1% Jun 16 · 18 / 1050 = 1.7% Jun 17 · 16 / 907 = 1.8% Jun 18 · 15 / 674 = 2.2% Jun 19 · 11 / 547 = 2.0% Jun 20 · 9 / 443 = 2.0% Jun 21 · 7 / 382 = 1.8% Jun 22 · 9 / 576 = 1.6% Jun 23 · 13 / 900 = 1.4% Jun 24 · 10 / 737 = 1.4% Jun 25 · 11 / 618 = 1.8% Jun 26 · 8 / 534 = 1.5% Jun 27 · 6 / 431 = 1.4% Jun 28 · 4 / 382 = 1.0% Jun 29 · 9 / 502 = 1.8% Jun 30 · 13 / 801 = 1.6% Jul 1 · 13 / 795 = 1.6% Jul 2 · 12 / 604 = 2.0% Jul 3 · 10 / 499 = 2.0% Jul 4 · 5 / 411 = 1.2% Jul 5 · 3 / 367 = 0.8% Jul 6 · 14 / 551 = 2.5% Jul 7 · 21 / 1175 = 1.8% Jul 8 · 149 / 12590 = 1.2% Jul 9 · 235 / 23758 = 1.0% Jul 10 · 255 / 22577 = 1.1% Jul 11 · 134 / 16035 = 0.8% Jul 12 · 113 / 20317 = 0.6% Jul 13 · 146 / 20946 = 0.7% Jul 14 · 160 / 20433 = 0.8% Jul 15 · 118 / 17259 = 0.7% Jul 16 · 120 / 14270 = 0.8% Jul 17 · 128 / 19732 = 0.6% Jul 18 · 177 / 22725 = 0.8% Jul 19 · 145 / 26149 = 0.6% Jul 20 · 124 / 22601 = 0.5% Jul 21 · 200 / 21670 = 0.9% Jul 22 · 190 / 23220 = 0.8% Jul 23 · 128 / 16883 = 0.8% Jul 24 · 94 / 12855 = 0.7% Jul 25 · 63 / 8956 = 0.7% Jul 26 · 183 / 20003 = 0.9% Jul 27 · 311 / 33895 = 0.9% Jul 28 · 339 / 38265 = 0.9% Jul 29 · 481 / 50179 = 1.0% Jul 30 · 352 / 43992 = 0.8% Jul 31 · 415 / 51184 = 0.8% Aug 1 · 369 / 50567 = 0.7% Aug 2 · 407 / 49779 = 0.8% Aug 3 · 400 / 48322 = 0.8% Aug 4 · 327 / 37411 = 0.9% Aug 5 · 260 / 32756 = 0.8% Aug 6 · 315 / 36660 = 0.9% Aug 7 · 347 / 37948 = 0.9% Aug 8 · 336 / 39753 = 0.8% Aug 9 · 304 / 34283 = 0.9% Aug 10 · 300 / 28927 = 1.0% Aug 11 · 264 / 32087 = 0.8% Aug 12 · 333 / 33590 = 1.0% Aug 13 · 476 / 50025 = 1.0% Aug 14 · 440 / 51500 = 0.9% Aug 15 · 446 / 51596 = 0.9% Aug 16 · 442 / 51911 = 0.9% Aug 17 · 341 / 41526 = 0.8% Aug 18 · 458 / 54050 = 0.8% Aug 19 · 687 / 49619 = 1.4% Aug 20 · 830 / 67090 = 1.2% Aug 21 · 716 / 90753 = 0.8% Aug 22 · 647 / 91782 = 0.7% Aug 23 · 638 / 90587 = 0.7% Aug 24 · 494 / 79315 = 0.6% Aug 25 · 532 / 69612 = 0.8% Aug 26 · 514 / 65326 = 0.8% Aug 27 · 609 / 83822 = 0.7% Aug 28 · 603 / 83712 = 0.7% Aug 29 · 550 / 84610 = 0.7% Aug 30 · 533 / 93002 = 0.6% Aug 31 · 533 / 90729 = 0.6% Sep 1 · 604 / 92121 = 0.7% Sep 2 · 595 / 98086 = 0.6% Sep 3 · 622 / 93321 = 0.7% Sep 4 · 571 / 89061 = 0.6% Sep 5 · 586 / 92944 = 0.6% Sep 6 · 540 / 81522 = 0.7% Sep 7 · 455 / 77850 = 0.6% Sep 8 · 485 / 69633 = 0.7%
Mar 30, 2026 90 days Sep 8, 2026

The shaded part of the chart is measured against a different set of sites. Until 8 July 2026 we only tracked launches from launch platforms; from that date we crawl the wider web as well. The share is a proportion of whatever we were tracking at the time, so it can step at that line without the technology itself changing. For a single continuous measure, switch to launch platforms.

How StackScope detects technologies

⋮ Jul 1, 2026: Adoption figures now count launches from launch platforms. Use the source view to include StackScope Discovery.

⋮ Jul 3, 2026: Email provider detection improved: providers identified from mail configuration are now caught on a site's first crawl. Earlier data may slightly undercount.

Email Hosting leaders

Tool % of launches % of category
#1 ▼1 Google Workspace 6.49% 22.51%
#2 ▲1 Hostinger Email 6.35% 22.03%
#3 ▲1 IONOS Email 1.81% 6.29%
#4 ▼1 Zoho Mail 1.81% 6.28%
#5 – Microsoft 365 1.03% 3.58%
…
#9 – Microsoft 365 / Outlook Mail Current page 0.79% 2.75%

Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Email Hosting tool.The most common alternatives to Microsoft 365 / Outlook Mail among indie launches are Hostinger Email and IONOS Email. All 3491 in Email Hosting →

Often used with

Tool Sites
Microsoft 365 5
Apache 4
jQuery 4
Google Analytics 4
Google Tag Manager 4

Tools most often detected on the same sites as Microsoft 365 / Outlook Mail.

Recent launches we can show

6,380 of the 24,916 sites using Microsoft 365 / Outlook Mail are product launches we list individually. The other 18,536 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. How StackScope Discovery works

kvalio — Sovereign cloud billing, metered in real time Sep 9, 2026 Finance Autoq — a agência produz, o cliente aprova, o sistema publica Sep 9, 2026 Marketing IQPROMPT.AI — AI Prompt Generator & Prompt Engineering Software | IQPROMPT Sep 9, 2026 Kastalia — Ihr Wissen. Alle Ihre KIs. Eine Quelle. Sep 9, 2026 Altide — AI-First Cybersecurity Platform Sep 9, 2026 Developer Tools Untitled site Sep 9, 2026 Finance 323 Markets — Unattended Retail for Louisville Businesses Sep 9, 2026 AuthLedger | Every permission. Provable. Sep 9, 2026 Developer Tools What the Fed? Sep 9, 2026 Untitled site Sep 9, 2026 Health Crashbox Sep 9, 2026 Developer Tools Schoolistics — School operations, connected Sep 9, 2026 Education

Showing the most recent 12 of 6,380.

The StackScope API serves all 24,916 sites using Microsoft 365 / Outlook Mail, filterable and exportable, from £15 a month.

Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.