So-net Mail
The facts below are what the maker publishes about So-net Mail, checked and dated. Our editors have not written about it yet.
Plans and prices
From So-net Mail's own pricing page, checked 22 Sep 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Basic Mailbox | — | Unlimited mailbox capacity · Unlimited stored messages · 2 months message retention |
| IMAP Service | — | 3 GB storage · Unlimited stored messages · 2 years inbox, sent and draft retention · 14 days spam and trash retention |
| So-net Webメール | Free | 無料 · So-netメールアドレス利用者向け |
| So-net IMAPサービス | — | 3GB · 保存通数無制限 · 受信箱/送信箱/下書き2年間 · 作成フォルダ無期限 · 料金ページで金額を確認できませんでした |
The facts
Each one read from So-net Mail's own pages, with the date it was checked.
What it does
- Audience
- The webmail service is for So-net email account holders and is accessible through a browser on supported devices.checked 11 Oct 2026
- Custom domain
- Yeschecked 22 Sep 2026
- Email account compatibility
- So-net Webメール supports So-net-issued accounts including basic mail, PostPet, A-box, and So-net VAIO mail.checked 11 Oct 2026
- Email aliases
- Yeschecked 22 Sep 2026
- IMAP constraints
- IMAP mailboxes have a 3GB capacity limit, and server-side message search is not provided.checked 11 Oct 2026
- IMAP use
- The IMAP service allows users to access the same mailbox state from multiple computers and smartphones.checked 11 Oct 2026
- Mailbox storage
- 3checked 22 Sep 2026
- New account limit
- So-net states that it will stop issuing basic email addresses to new connection-service registrants from November 4, 2026; existing customers can continue using theirs.checked 11 Oct 2026
- No setup
- Users can log in with their So-net email address and password without installing or configuring mail software on each device.checked 11 Oct 2026
- Purpose
- So-net Webメール lets users send and receive email on the web.checked 11 Oct 2026
- Retention limit
- Webmail messages are retained for two months; spam and trash folder messages are automatically deleted after 14 days.checked 11 Oct 2026
- Security transport
- So-net announced the end of support for TLS 1.0 and 1.1 for its email service.checked 11 Oct 2026
- Spam control
- The free spam filtering service offers four spam sensitivity levels and configurable sender, recipient, and subject conditions.checked 11 Oct 2026
- Support
- So-net Webmail help is available through the question mark icon in the webmail interface, with an FAQ linked from the service page.checked 11 Oct 2026
- Webmail features
- The webmail service supports spam and folder filtering; spam filtering requires a separate free application.checked 11 Oct 2026
Money
- Free plan
- Yeschecked 22 Sep 2026
Where it runs
- Platform access
- web_mobile_desktopchecked 22 Sep 2026
- Supported devices
- The service supports PCs, smartphones, and tablets, but not feature phones.checked 11 Oct 2026
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