Email server settings
OCN SMTP, IMAP & POP3 settings
Use these settings to add your OCN account (ocn.ne.jp, ocn.ad.jp) to Outlook, Apple Mail, Thunderbird, your phone or any app that sends email over SMTP.
Incoming mail
POP3
- Server
- pop.ocn.ne.jp
- Port
- 995
- Security
- SSL/TLS
- User name
- full email address
- Authentication
- Normal password
Outgoing mail
SMTP
- Server
- smtp.ocn.ne.jp
- Port
- 465
- Security
- SSL/TLS
- User name
- full email address
- Authentication
- Normal password
How to set up OCN in a mail app
- Choose add account → manual setup (or "other account") in your mail app.
- Enter your full OCN email address and password.
- Pick POP3 for incoming mail and enter the server, port and security from the table above.
- Enter the SMTP server for outgoing mail (smtp.ocn.ne.jp, port 465) and enable authentication with the same login.
If the login keeps failing, enable IMAP/POP access in the OCN web settings and use an app password if your account uses two-step verification.
Email domains using these settings
ocn.ne.jp, ocn.ad.jp.
Settings from the Mozilla Thunderbird ISP database (MPL 2.0), which mail clients use for automatic setup.
OCN email settings: FAQ
What is the OCN SMTP server?
Why does my OCN login fail in a mail app?
Email validation API
Validate ocn.ne.jp addresses before you send
emailvalidation.io checks syntax, MX records and the mailbox over SMTP, flags disposable, role and free addresses and returns a quality score, in one request.
Read the docs100 free validations every month. No credit card required.
GET https://api.emailvalidation.io/v1/info?email=name@ocn.ne.jp
{
"email": "name@ocn.ne.jp",
"domain": "ocn.ne.jp",
"mx_found": true,
"smtp_check": …,
"free": …,
"disposable": false,
"state": "…"
}