How many companies use Apple iCloud Mail?

TechLeads currently detects Apple iCloud Mail on 853,903 websites. HTTP Archive's monthly crawl, a separate dataset, detected it on 2,030,565 pages in September 2026.

Who are Apple iCloud Mail's biggest competitors?

By number of websites, the largest Webmail technologies besides Apple iCloud Mail are Google Workspace (3,325,116), Microsoft 365 (2,763,726), Proton Mail (106,783), Zimbra (4,429), RoundCube (3,025).

Which companies use Apple iCloud Mail?

Websites using Apple iCloud Mail include issuu.com, calendly.com, time.com, mailchimp.com, openai.com, mashable.com. The full list of 853,903 websites can be exported as a CSV for $29.

Apple iCloud Mail Market Share and Usage Statistics

As of October 14, 2026, Apple iCloud Mail is used by 853,903 websites in the TechLeads index: 12.1% of all Webmail detections, the 3rd most-used of 12 Webmail technologies.

853,903

websites using Apple iCloud Mail

12.1%

share of Webmail

of 12 in Webmail

Cite this data

Quoting these numbers? Credit TechLeads with a link to this page.

Citation

TechLeads. "Apple iCloud Mail Customers and Market Share." Data as of October 14, 2026. https://techleads.fyi/technology/apple-icloud-mail/market-share

HTML link

<a href="https://techleads.fyi/technology/apple-icloud-mail/market-share">Apple iCloud Mail market share (TechLeads data)</a>

Apple iCloud Mail vs competitors in Webmail

Websites using each technology in the TechLeads index, and its share of all Webmail detections.

#	Technology	Websites	Share
1	Google Workspace	3,325,116	47.1%
2	Microsoft 365	2,763,726	39.2%
3	Apple iCloud Mail	853,903	12.1%
4	Proton Mail	106,783	1.5%
5	Zimbra	4,429	0.06%
6	RoundCube	3,025	0.04%
7	Outlook Web App	1,514

Apple iCloud Mail usage over time

In HTTP Archive's monthly crawl of public websites, Apple iCloud Mail was detected on 2,030,565 pages in September 2026, up 9.6% from a year earlier. Among the 1,000 most-visited sites, it appeared on 396. HTTP Archive is a separate dataset from the TechLeads index, so its numbers are not added to ours.

Same month, other Webmail technologies in HTTP Archive: Proton Mail 71,216, RoundCube 4,502, Zimbra 3,928, Outlook Web App 468, SquirrelMail 63.

Apple iCloud Mail customers by country

Based on country-code domains (such as .de or .co.uk); websites on .com and other generic domains are not assigned a country.

US11,059
DE2,842
GB2,452
AU1,081
FR921
CA806
JP453
NL412
CH349
SE347

Companies using Apple iCloud Mail

issuu.com
calendly.com
time.com · Time
mailchimp.com
openai.com
mashable.com · Mashable Benelux
foursquare.com · Foursquare
fortune.com
qz.com · Qz
peatix.com
opensea.io · Opensea
donorbox.org

See all 853,903 websites using Apple iCloud Mail or download the full list as a CSV for $29.

How these numbers are calculated

TechLeads scans public websites and detects Apple iCloud Mail from signals in the page HTML, scripts, cookies, HTTP headers and DNS records. Market share is Apple iCloud Mail's website count divided by the website counts of all Webmail technologies we track; a site using two Webmail tools counts for both. Counts were last refreshed on October 14, 2026 and update daily.

FAQ

Apple iCloud Mail accounts for 12.1% of Webmail detections in the TechLeads index (853,903 websites), which makes it the 3rd most-used of 12 Webmail technologies we track.