No. 70of 116 ·Personal Email Services

OCN Mail

Web · Windows · Mac · Android · iPhone

Freedom report

Two barsScore 6.4

Runs widely5 of 6 device platforms
DocumentedPlans, terms and facts published

OCN Mail is ranked #70 of 116 in personal email services on Freedom251, made by OCN Mail (Tokyo, Japan). It runs on Android, iOS, macOS, Web, Windows.

OCN Mail plans and pricing

All plans

OCN Mail 10 GB mailbox support.ocn.ne.jp · 22 Sept 2026

OCN Value Plan Retains an OCN email address when using another internet provider support.ocn.ne.jp · 22 Sept 2026

Compared on personal email services

Free plan: Yes
Mailbox storage: 10 GB
Attachment limit: 70 MB
Custom domain: No
Email aliases: Yes
Platform access: web_and_mobile

Best OCN Mail alternatives

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Two bars Proton Mail Free tier No. 1Free8.3 Two bars Zoho Mail Free tier No. 2$0.08/mo8.3 Two bars Gmail Free tier No. 3$1.99/mo8.2 Two bars Outlook.com Free tier No. 4$1.99/mo8.1 Two bars eclipso Mail Europe Free tier No. 5€1.49/mo8.1 Two bars mail.ch Free tier No. 6CHF 3.49/mo8.0

The record

Email service: OCN Mail lets users send and receive email through a web browser or a configured mail app.
Web access: Web Mail can be used by signing in with an OCN email address and password, without installing or configuring a mail program.
Supported devices: OCN provides setup instructions for iPhone and iPad, Android devices, Windows PCs, and Mac computers.
Mail apps: The setup guide includes Apple Mail, Gmail, Microsoft Outlook, and Mozilla Thunderbird.
Mailbox capacity: The OCN mail server mailbox capacity is 10 GB.
Search and organization: Web Mail supports searching sent and received messages and creating filters that automatically sort incoming mail into folders.
Forwarding: Users can configure received messages to be automatically forwarded to another email address.
Contacts and portability: Users can import and export mail and address book data; address book formats include CSV and OCN Mail's TGZ format.
Spam protection: OCN's spam blocking service detects spam on OCN's mail servers and automatically isolates it on the OCN network.
Spam options: Web Mail settings describe free spam detection that marks subject lines with [meiwaku] and a separate spam blocking service priced at 月額220円.
Security limits: Spam blocking is a separate service, and users who have subscribed to it can configure allowed mail to avoid incorrect spam classification.
Support: OCN provides mail setup instructions, troubleshooting guides, and contact information for OCN Technical Support.
Maker: NTT DOCOMO BUSINESS says it changed its name from NTT Communications Corporation on July 1, 2025, and lists Otemachi, Chiyoda-ku, Tokyo as its headquarters.
Headquarters: Tokyo, Japan

Where it ranks on Freedom251

Best Personal Email Services in 2026#70 of 116

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Sources

support.ocn.ne.jp/personal/purpose/detail/pid2900000mlp/· checked 11 Oct 2026
support.ocn.ne.jp/personal/purpose/detail/pid29000010lu/· checked 11 Oct 2026
support.ocn.ne.jp/personal/purpose/detail/pid2900001tum/· checked 11 Oct 2026
support.ocn.ne.jp/personal/purpose/detail/pid2900000zla/· checked 11 Oct 2026
support.ocn.ne.jp/personal/purpose/detail/pid2900000zl8/· checked 11 Oct 2026
support.ocn.ne.jp/personal/purpose/detail/pid2990021011/· checked 11 Oct 2026
support.ocn.ne.jp/personal/purpose/detail/pid29000021eu/· checked 11 Oct 2026
ntt.com/en/about-us/company-profile/· checked 11 Oct 2026
ocn.ne.jp· checked 28 Sept 2026
support.ocn.ne.jp/personal/purpose/detail/pid290000195g/· checked 22 Sept 2026
support.ocn.ne.jp/personal/purpose/detail/pid29000026jd/· checked 22 Sept 2026