au Mail review
A practical au-linked mailbox with useful basics and paid address portability.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
au Mail is KDDI’s email service for au mobile customers who want an au.com or ezweb.ne.jp address. It suits subscribers who want email alongside their au mobile service, with browser access from computers and tablets and mobile apps for Android and iPhone. The standard service has no separate monthly usage fee, but it is not a standalone mailbox signup for people without eligible au service.
For everyday organization, au Mail includes folders, manual or automatic sorting, saved search filters, message search, spam filtering, forwarding, and file attachments. Users can access the service through Web Mail, the Android au Mail app, or iPhone Mail, and the listed integrations include au ID. This is a focused email offering rather than a broad custom-domain service: it provides au addresses and the core tools to manage messages, but does not support custom domains.
Portability is the main reason to consider the paid option. According to the published plan details, au Mail Portability keeps an au.com or ezweb.ne.jp address active after cancelling au service and adds spam filtering and automatic forwarding. The plan includes 400 MB or 5,000 messages with unlimited retention, and the starting price is 330. That storage allowance makes the price a meaningful trade-off for anyone with a large mailbox. Choose au Mail if you are an au subscriber who values keeping an established address after leaving; those seeking a standalone mailbox, a custom domain, or more storage for the cost should look elsewhere.
au Mail pros and cons
- Where it wins
- Web and mobile access, including iPhone and Android apps
- Folders, search, saved filters, forwarding, and spam filtering
- Portability keeps an au.com or ezweb.ne.jp address after cancellation
- Where it doesn't
- Standard service requires au mobile eligibility
- Portability starts at 330 for only 400 MB of storage
- No custom domain support
au Mail fact sheet, pricing and score →
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