Yahoo! JAPAN Mail
The facts below are what the maker publishes about Yahoo! JAPAN Mail, checked and dated. Our editors have not written about it yet.
Plans and prices
From Yahoo! JAPAN Mail's own pricing page, checked 19 Sep 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | Yahoo! JAPAN ID registration and access · 10 GB mailbox storage · Web and mobile app access |
| Virus Check Service | — | Server-side virus detection and removal · Advertising is removed from the Yahoo! Mail interface · Automatically renews monthly |
| Yahoo!メール（無料） | Free | Mailbox starts at 2GB and can grow to 10GB · 25MB maximum per email · mailbox may be suspended after 6 months without use |
The facts
Each one read from Yahoo! JAPAN Mail's own pages, with the date it was checked.
Money
- Ad-free inbox
- Yeschecked 19 Sep 2026
- Free plan
- Yeschecked 19 Sep 2026
What it does
- Calendar integration
- Received reservation emails can be automatically added to the calendar.checked 11 Oct 2026
- Custom domain
- Nochecked 19 Sep 2026
- Email aliases
- Yeschecked 19 Sep 2026
- Email service
- Yahoo!メール lets users create a personal email address with a Yahoo! JAPAN ID.checked 11 Oct 2026
- Follow-up reminders
- The app can send a reminder at a chosen time for a notification or an email to read later.checked 11 Oct 2026
- Inactivity limit
- Email addresses and mailboxes unused for at least six months may be suspended.checked 11 Oct 2026
- Mailbox capacity
- A mailbox starts with a 2GB limit and grows over time to at most 10GB without qualifying services; Yahoo! BB, Security Pack, or eligible LYP Premium accounts can grow without a stated limit.checked 11 Oct 2026
- Mailbox features
- The service supports composing and searching email, folders, and automatic sorting.checked 11 Oct 2026
- Mailbox storage
- 10checked 19 Sep 2026
- Message limit
- Each email, including its body and attachments, is limited to 25MB.checked 11 Oct 2026
- Multiple accounts
- The mobile app can manage Gmail, Docomo, au, and SoftBank email accounts; Android supports Gmail only, and SoftBank support is limited to i.softbank.jp.checked 11 Oct 2026
- Safety addresses
- Users can create free secondary addresses that share the main inbox, with up to 10 normally or 30 for Yahoo! BB or Security Pack users.checked 11 Oct 2026
- Security features
- The service lists spam filtering, restrictions on overseas access, and brand icons among its security measures.checked 11 Oct 2026
- Sender authentication
- Yahoo!メール uses SPF, DKIM, and DMARC and displays icons to help users assess sender authenticity.checked 11 Oct 2026
- Support
- Yahoo!メール help offers searchable articles, an AI chat agent, and contact forms that require login for personalized assistance.checked 11 Oct 2026
The company
- Headquarters
- Tokyo, Japanchecked 28 Sep 2026
Where it runs
- Mobile apps
- Official Yahoo!メール apps are available for iPhone/iPad and Android, and use requires a Yahoo! JAPAN ID login.checked 11 Oct 2026
- Platform access
- web_mobile_desktopchecked 19 Sep 2026
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