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au Mail
by au Mail
What au Mail is
au Mail is an email service for au customers, providing addresses ending in @au.com or @ezweb.ne.jp. It works through Android and iOS email apps and browser-based Webメール on a PC or tablet. Web access uses an au ID and is included without an additional fee for au mobile phone or tablet customers with LTE NET or 5G NET. The auメール app supports folders, manual or automatic sorting, folder-specific notification sounds, and saved filters for matching messages. Normal use on au smartphones and 4G LTE phones provides 200 MB, 500 messages, and 30 days. Webメール provides 400 MB and 5,000 messages, or 1 GB and 20,000 messages for Ponta Pass members. Messages over limits are deleted oldest first, and trash may be cleared after 45 days. KDDI says DMARC and DKIM help suppress spoofed mail, while BIMI icons help identify official senders. Webメール does not support mamorino, mamorino2, or mamorino3 devices.
Who it suits
au Mail suits au mobile customers who need an au.com or ezweb.ne.jp address across phones, tablets, and browsers. It is also useful for users who want folders, filters, and automatic sorting.
What it does well
- Addresses use au.com or ezweb.ne.jp domains
- Web access included for eligible au customers
- Folders and automatic message sorting
- Saved filters display matching emails
- Authentication features help suppress spoofing
What to know first
- Requires au mobile service and LTE NET or 5G NET
- Mailbox limits vary by access and membership
- Messages over storage limits are deleted
- Webメール unavailable on three mamorino models
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Standard au Mail | Available to au mobile customers with 5G NET or LTE NET · Web Mail access is included without an additional charge · Supports au.com and ezweb.ne.jp addresses | On request |
| au Mail Portability | Keeps an au.com or ezweb.ne.jp address after cancelling au service · Includes spam filtering and automatic forwarding · Provides 400 MB or 5,000 messages with unlimited retention | On request |
| auメール | 月額利用料 無料 · 通信料が必要 · 5G NETまたはLTE NETへの加入が必要 | Free |
As au.com lists them, read 19 Sept 2026. The maker's own page has the final word.
Verdict
au Mail provides au-branded addresses with mobile apps, browser access, and practical organization tools. Eligibility requirements, mailbox limits, and automatic deletion rules should be checked before relying on it for long-term storage.
Facts from au Mail's own pages
- Android app
- The auメール app is available for supported au Android smartphones and tablets, with distribution through Google Play for models released from summer 2020 onward. · au.com, 11 Oct 2026
- Automatic deletion
- Messages that exceed mailbox storage limits are deleted starting with the oldest, and messages in the trash may be automatically deleted after 45 days. · au.com, 11 Oct 2026
- Compatibility limit
- Webメール is unavailable to users of the mamorino, mamorino2, and mamorino3 devices. · au.com, 11 Oct 2026
- Custom domain
- No · au.com, 19 Sept 2026
- Email service
- auメール provides email addresses using the @au.com or @ezweb.ne.jp domains. · au.com, 11 Oct 2026
- Filters
- Users can save filter conditions to display only emails that match them. · au.com, 11 Oct 2026
- Free plan
- Yes · au.com, 19 Sept 2026
- Headquarters
- Tokyo, Japan · au.com, 28 Sept 2026
- iPhone and iPad
- The service supports iPhone and iPad email apps, and Webメール can be used from a tablet browser. · au.com, 11 Oct 2026
- Mailbox limits
- For au smartphones and 4G LTE phones, normal use provides 200 MB, 500 messages, and 30 days; Webメール increases this to 400 MB and 5,000 messages, or 1 GB and 20,000 messages for Ponta Pass members. · au.com, 11 Oct 2026
- Mailbox storage
- 0.4 · au.com, 19 Sept 2026
- Mail organization
- The auメール app supports creating folders, manually or automatically sorting messages, and setting notification sounds by folder. · au.com, 11 Oct 2026
- Organization
- The official au page identifies KDDI Corporation as its copyright holder. · au.com, 11 Oct 2026
- Phishing protection
- KDDI says it introduced DMARC and DKIM authentication to suppress spoofed mail and BIMI icons to help identify official senders. · au.com, 11 Oct 2026
- Platform access
- web_and_mobile · au.com, 19 Sept 2026
- Web access
- Customers can access auメール from a PC or tablet browser by logging in with an au ID. · au.com, 11 Oct 2026
- Web eligibility
- Webメール is available without an additional fee to customers with an au mobile phone or tablet and LTE NET or 5G NET. · au.com, 11 Oct 2026
Where au Mail stands on Freedom251
- Personal Email Services#85 of 115