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SPECIFICTION
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OCN Mail

ocn.ne.jp

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Spec score 7.9 #78 of 115 in Personal Email Services

Spec sheet

Free plan
YesRead 22 Sep 2026 · support.ocn.ne.jp
Support
OCN provides mail setup instructions, troubleshooting guides, and contact information for OCN Technical Support.Read 11 Oct 2026 · support.ocn.ne.jp
Headquarters
Tokyo, JapanRead 28 Sep 2026 · ocn.ne.jp
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.Read 11 Oct 2026 · ntt.com
Attachment limit
70Read 22 Sep 2026 · support.ocn.ne.jp
Contacts and portability
Users can import and export mail and address book data; address book formats include CSV and OCN Mail's TGZ format.Read 11 Oct 2026 · support.ocn.ne.jp
Custom domain
NoRead 22 Sep 2026 · support.ocn.ne.jp
Email aliases
YesRead 22 Sep 2026 · support.ocn.ne.jp
Email service
OCN Mail lets users send and receive email through a web browser or a configured mail app.Read 11 Oct 2026 · support.ocn.ne.jp
Forwarding
Users can configure received messages to be automatically forwarded to another email address.Read 11 Oct 2026 · support.ocn.ne.jp
Mail apps
The setup guide includes Apple Mail, Gmail, Microsoft Outlook, and Mozilla Thunderbird.Read 11 Oct 2026 · support.ocn.ne.jp
Mailbox capacity
The OCN mail server mailbox capacity is 10 GB.Read 11 Oct 2026 · support.ocn.ne.jp
Mailbox storage
10Read 22 Sep 2026 · support.ocn.ne.jp
Platform access
web_and_mobileRead 22 Sep 2026 · support.ocn.ne.jp
Search and organization
Web Mail supports searching sent and received messages and creating filters that automatically sort incoming mail into folders.Read 11 Oct 2026 · support.ocn.ne.jp
Security limits
Spam blocking is a separate service, and users who have subscribed to it can configure allowed mail to avoid incorrect spam classification.Read 11 Oct 2026 · support.ocn.ne.jp
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.Read 11 Oct 2026 · support.ocn.ne.jp
Spam protection
OCN's spam blocking service detects spam on OCN's mail servers and automatically isolates it on the OCN network.Read 11 Oct 2026 · support.ocn.ne.jp
Supported devices
OCN provides setup instructions for iPhone and iPad, Android devices, Windows PCs, and Mac computers.Read 11 Oct 2026 · support.ocn.ne.jp
Web access
Web Mail can be used by signing in with an OCN email address and password, without installing or configuring a mail program.Read 11 Oct 2026 · support.ocn.ne.jp

Plans and prices

OCN Mail Price not published 10 GB mailbox Read 22 Sep 2026 · support.ocn.ne.jp
OCN Value Plan Price not published Retains an OCN email address when using another internet provider Read 22 Sep 2026 · support.ocn.ne.jp

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Where Specifiction places it

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