Websites Powered by Mailgun
338,468 websites tracked using Mailgun (Email) · www.mailgun.com
Mailgun is a email delivery or marketing service. Its official site is mailgun.com. PoweredBy tracks the websites that use Mailgun across the public web; the tracked counts, adoption trend, and site list on this page are updated from our ongoing crawl of the email ecosystem.
Usage trend
50K
100K
150K
200K
Aug 2022
Aug 2023
Jul 2024
Jul 2025
Jun 2026
Domains observed using Mailgun in each month's HTTP Archive crawl,
Aug 2022 to Jun 2026 · peak 190,595 in Jun 2026. The tracked total above also
counts sites not re-crawled recently.
Core Web Vitals
LCP 1.8 s
INP 75 ms
CLS 0
TTFB 700 ms
Median site among 175,219 Mailgun sites with Chrome UX data, p75 values, Jun 2026.
Top countries
United States
88,542
United Kingdom
36,088
Canada
28,317
India
27,650
Germany
21,441
Australia
20,734
France
20,584
Netherlands
18,415
Sites using Mailgun by audience country, Chrome UX Report.
Top sites by authority
9+
9% · 32 of 372 sites
8+
8% · 587 of 7,677 sites
7+
5% · 2,395 of 45,712 sites
6+
5% · 5,020 of 110,136 sites
5+
4% · 9,287 of 246,751 sites
The share of the web's most authoritative domains, by Open Page Rank tier, seen running Mailgun in recent crawls. Only 372 domains worldwide score 9 or higher.
Websites using Mailgun
| # | Domain | Open Page RankOPR | Est. monthly visits (US)Visits (US) | Keywords | First seen |
|---|---|---|---|---|---|
| 1 | europa.eu | 9.57/10 | 42,200 | 31,835 | Aug 2022 |
| 2 | shopify.com | 9.48/10 | 1,109,300 | 228,087 | Aug 2022 |
| 3 | unsplash.com | 9.26/10 | 4,799,000 | 829,828 | Aug 2022 |
| 4 | harvard.edu | 9.24/10 | 472,900 | 13,570 | Aug 2022 |
| 5 | bund.de | 9.23/10 | - | - | Aug 2025 |
| 6 | ca.gov | 9.23/10 | 1,457,100 | 28,722 | Aug 2022 |
| 7 | dropbox.com | 9.21/10 | 984,800 | 123,932 | Nov 2023 |
| 8 | stanford.edu | 9.19/10 | 3,302,700 | 5,160 | Aug 2022 |
| 9 | mit.edu | 9.18/10 | 161,200 | 27,360 | Aug 2022 |
| 10 | ibm.com | 9.13/10 | 11,139,500 | 518,522 | Aug 2022 |
| 11 | substack.com | 9.13/10 | 231,200 | 128,355 | Aug 2022 |
| 12 | irs.gov | 9.13/10 | 19,016,800 | 2,129,096 | Aug 2023 |
| 13 | salesforce.com | 9.10/10 | 1,368,700 | 131,215 | Aug 2022 |
| 14 | berkeley.edu | 9.10/10 | 166,900 | 5,412 | Aug 2022 |
| 15 | cornell.edu | 9.10/10 | 242,100 | 23,854 | Aug 2022 |
| 16 | hhs.gov | 9.10/10 | 1,465,200 | 282,522 | May 2025 |
| 17 | giphy.com | 9.07/10 | 8,743,600 | 2,542,358 | Aug 2022 |
| 18 | imgur.com | 9.07/10 | 850,200 | 760,773 | Aug 2022 |
| 19 | typeform.com | 9.07/10 | 55,000 | 12,938 | Aug 2022 |
| 20 | hcaptcha.com | 9.06/10 | 780 | 1,843 | Aug 2022 |
| 21 | cambridge.org | 9.04/10 | 633,100 | 518,312 | Aug 2025 |
| 22 | python.org | 9.03/10 | 408,700 | 39,359 | Aug 2022 |
| 23 | scribd.com | 9.02/10 | 3,456,900 | 4,304,285 | Aug 2022 |
| 24 | columbia.edu | 9.02/10 | 770,900 | 41,349 | Aug 2022 |
| 25 | leadconnectorhq.com | 9.01/10 | 220 | 108 | Jul 2023 |
| 26 | theatlantic.com | 9.01/10 | 865,300 | 436,432 | Aug 2022 |
| 27 | psu.edu | 9.01/10 | 581,600 | 94,595 | Jun 2025 |
| 28 | umich.edu | 9.01/10 | 36,500 | 1,974 | Sep 2024 |
| 29 | livestream.com | 9.00/10 | 35,400 | 2,320 | Aug 2022 |
| 30 | gitlab.com | 9.00/10 | 87,500 | 29,195 | Aug 2022 |
| 31 | uk.com | 9.00/10 | 2 | 12 | Aug 2022 |
| 32 | upenn.edu | 9.00/10 | 179,200 | 5,457 | Aug 2022 |
| 33 | service.gov.uk | 8.99/10 | - | - | Aug 2022 |
| 34 | complianz.io | 8.98/10 | 510 | 864 | Jan 2024 |
| 35 | marriott.com | 8.98/10 | 13,740,800 | 1,485,399 | Apr 2026 |
| 36 | ox.ac.uk | 8.98/10 | 214,200 | 93,016 | Aug 2022 |
| 37 | princeton.edu | 8.98/10 | 246,800 | 50,700 | Aug 2022 |
| 38 | texas.gov | 8.98/10 | 856,400 | 43,777 | Aug 2022 |
| 39 | cmu.edu | 8.97/10 | 436,800 | 81,774 | Mar 2024 |
| 40 | orcid.org | 8.97/10 | 75,800 | 43,570 | Aug 2022 |
| 41 | wisc.edu | 8.97/10 | 461,400 | 7,361 | Aug 2022 |
| 42 | nginx.com | 8.96/10 | - | - | Aug 2022 |
| 43 | washington.edu | 8.96/10 | 668,000 | 107,419 | Mar 2026 |
| 44 | nsw.gov.au | 8.95/10 | 75,300 | 73,181 | Aug 2022 |
| 45 | jhu.edu | 8.93/10 | 177,400 | 6,915 | Jan 2025 |
| 46 | utexas.edu | 8.92/10 | 503,000 | 11,984 | Dec 2022 |
| 47 | uchicago.edu | 8.92/10 | 63,700 | 10,331 | Aug 2022 |
| 48 | webflow.com | 8.90/10 | 149,800 | 61,334 | Aug 2022 |
| 49 | nyu.edu | 8.90/10 | 674,000 | 142,032 | Aug 2022 |
| 50 | zapier.com | 8.88/10 | 1,224,700 | 222,443 | Aug 2022 |
| 51 | fandom.com | 8.87/10 | 96,300 | 43,935 | Aug 2022 |
| 52 | bmj.com | 8.87/10 | 191,800 | 113,110 | Aug 2022 |
| 53 | cam.ac.uk | 8.87/10 | 208,200 | 35,354 | Aug 2022 |
| 54 | us.com | 8.86/10 | 32 | 9 | Aug 2022 |
| 55 | nami.org | 8.86/10 | 626,800 | 117,511 | Aug 2022 |
| 56 | northwestern.edu | 8.86/10 | 193,400 | 45,922 | Aug 2022 |
| 57 | g2.com | 8.85/10 | 471,800 | 215,138 | May 2024 |
| 58 | iea.org | 8.85/10 | 168,000 | 79,019 | Aug 2022 |
| 59 | umd.edu | 8.85/10 | 253,300 | 15,690 | Jun 2026 |
| 60 | buzzfeed.com | 8.84/10 | 2,987,800 | 1,687,461 | Aug 2022 |
| 61 | ubc.ca | 8.84/10 | 14,500 | 2,813 | Aug 2022 |
| 62 | airtable.com | 8.83/10 | 68,900 | 10,477 | Aug 2022 |
| 63 | ct.gov | 8.83/10 | 4,800 | 35 | May 2024 |
| 64 | ucdavis.edu | 8.83/10 | 383,600 | 93,475 | Aug 2022 |
| 65 | unc.edu | 8.83/10 | 342,800 | 27,928 | Aug 2022 |
| 66 | aarp.org | 8.82/10 | 1,984,100 | 653,556 | Aug 2022 |
| 67 | asu.edu | 8.82/10 | 144,700 | 4,208 | Sep 2022 |
| 68 | virginia.gov | 8.82/10 | 339,900 | 20,933 | Feb 2023 |
| 69 | it.com | 8.81/10 | - | - | Apr 2025 |
| 70 | perplexity.ai | 8.81/10 | 752,700 | 72,065 | Aug 2025 |
| 71 | utoronto.ca | 8.81/10 | 42,800 | 10,094 | Nov 2022 |
| 72 | ycombinator.com | 8.80/10 | 311,800 | 53,954 | Aug 2022 |
| 73 | utah.gov | 8.80/10 | 129,900 | 27,432 | Aug 2022 |
| 74 | in.gov | 8.80/10 | 3,076,000 | 1,001,546 | Aug 2022 |
| 75 | generatepress.com | 8.79/10 | 2,200 | 5,273 | Aug 2023 |
| 76 | bitly.com | 8.79/10 | 133,500 | 16,485 | Aug 2022 |
| 77 | about.me | 8.79/10 | 81,200 | 59,807 | Aug 2022 |
| 78 | itch.io | 8.78/10 | 600,200 | 201,556 | Aug 2022 |
| 79 | georgetown.edu | 8.78/10 | 138,100 | 27,817 | Aug 2022 |
| 80 | msu.edu | 8.78/10 | 149,500 | 2,641 | Aug 2022 |
| 81 | eu.com | 8.77/10 | - | - | Aug 2022 |
| 82 | webaim.org | 8.77/10 | 30,000 | 9,662 | Aug 2022 |
| 83 | uber.com | 8.77/10 | 2,357,500 | 481,915 | Dec 2025 |
| 84 | gouv.qc.ca | 8.77/10 | - | - | Aug 2022 |
| 85 | samaritans.org | 8.76/10 | 9,400 | 10,764 | Aug 2022 |
| 86 | uci.edu | 8.76/10 | 94,700 | 9,859 | Mar 2026 |
| 87 | tamu.edu | 8.76/10 | 352,900 | 11,636 | Apr 2024 |
| 88 | ohio.gov | 8.76/10 | 367,500 | 35,968 | Aug 2022 |
| 89 | osu.edu | 8.76/10 | 163,600 | 14,045 | Jun 2024 |
| 90 | bookshop.org | 8.75/10 | 415,700 | 189,653 | Sep 2023 |
| 91 | producthunt.com | 8.74/10 | 47,600 | 28,844 | Aug 2022 |
| 92 | hyatt.com | 8.74/10 | 4,845,700 | 446,733 | Aug 2022 |
| 93 | utah.edu | 8.74/10 | 474,600 | 10,598 | Apr 2023 |
| 94 | nymag.com | 8.73/10 | 1,058,600 | 638,530 | Aug 2022 |
| 95 | virginia.edu | 8.73/10 | 265,200 | 11,663 | Aug 2022 |
| 96 | ncsu.edu | 8.72/10 | 155,900 | 15,968 | Aug 2022 |
| 97 | freshdesk.com | 8.71/10 | 3 | 2 | Aug 2022 |
| 98 | gohugo.io | 8.71/10 | 29,800 | 4,190 | Aug 2022 |
| 99 | ihk.de | 8.71/10 | 970 | 1,743 | Feb 2026 |
| 100 | arizona.edu | 8.71/10 | 127,800 | 25,918 | Aug 2022 |
Open Page Rank is the domain's authority score (0 to 10, from the open web link graph); the list is ordered by it and covers sites seen in recent crawls. Visits and keywords are estimated US organic search figures.
Download top 10,000 as CSV (zip) →
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