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So-net Mail

so-net.ne.jp

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Spec score 8.0 #72 of 115 in Personal Email Services

Spec sheet

Purpose
So-net Webメール lets users send and receive email on the web.Read 11 Oct 2026 · so-net.ne.jp
Audience
The webmail service is for So-net email account holders and is accessible through a browser on supported devices.Read 11 Oct 2026 · so-net.ne.jp
Free plan
YesRead 22 Sep 2026 · so-net.ne.jp
Support
So-net Webmail help is available through the question mark icon in the webmail interface, with an FAQ linked from the service page.Read 11 Oct 2026 · so-net.ne.jp
Custom domain
YesRead 22 Sep 2026 · so-net.ne.jp
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.Read 11 Oct 2026 · so-net.ne.jp
Email aliases
YesRead 22 Sep 2026 · so-net.ne.jp
IMAP constraints
IMAP mailboxes have a 3GB capacity limit, and server-side message search is not provided.Read 11 Oct 2026 · so-net.ne.jp
IMAP use
The IMAP service allows users to access the same mailbox state from multiple computers and smartphones.Read 11 Oct 2026 · so-net.ne.jp
Mailbox storage
3Read 22 Sep 2026 · so-net.ne.jp
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.Read 11 Oct 2026 · so-net.ne.jp
No setup
Users can log in with their So-net email address and password without installing or configuring mail software on each device.Read 11 Oct 2026 · so-net.ne.jp
Platform access
web_mobile_desktopRead 22 Sep 2026 · so-net.ne.jp
Retention limit
Webmail messages are retained for two months; spam and trash folder messages are automatically deleted after 14 days.Read 11 Oct 2026 · so-net.ne.jp
Security transport
So-net announced the end of support for TLS 1.0 and 1.1 for its email service.Read 11 Oct 2026 · so-net.ne.jp
Spam control
The free spam filtering service offers four spam sensitivity levels and configurable sender, recipient, and subject conditions.Read 11 Oct 2026 · so-net.ne.jp
Supported devices
The service supports PCs, smartphones, and tablets, but not feature phones.Read 11 Oct 2026 · so-net.ne.jp
Webmail features
The webmail service supports spam and folder filtering; spam filtering requires a separate free application.Read 11 Oct 2026 · so-net.ne.jp

Plans and prices

Basic Mailbox Price not published Unlimited mailbox capacity · Unlimited stored messages · 2 months message retention Read 22 Sep 2026 · so-net.ne.jp
IMAP Service Price not published 3 GB storage · Unlimited stored messages · 2 years inbox, sent and draft retention · 14 days spam and trash retention Read 22 Sep 2026 · so-net.ne.jp
So-net Webメール Free 無料 · So-netメールアドレス利用者向け Read 11 Oct 2026 · so-net.ne.jp
So-net IMAPサービス Price not published 料金ページで金額を確認できませんでした 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 Read 11 Oct 2026 · so-net.ne.jp

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