Thunderbird/Windows (IMAP4)
Using IMAP4 on Thunderbird
The instructions below use Thunderbird 150.0.1 as an example.
Send and Receive Settings
- Launch Thunderbird.
- Click the menu icon [≡] in the upper right corner of the screen.
-
Click [New Account (N)].
-
Click [Email].
- Configure the [Add your Email Address] settings. Please refer to the information below to fill in the fields.
After entering the information, click [Continue].Full name Enter your name (this will be displayed as the sender) Email address Your SFC-CNS email address
-
The mail server search will begin. Please wait until you see the message [Configuration found at email provider].
The account settings will be configured automatically, so select [Continue].
Note:If your account settings are not configured automatically, please refer to If automatic setup fails
-
Enter your IMAP/SMTP-AUTH password and click [Continue].
-
Click [Finish].
- The setup for using IMAP4 with Thunderbird is now complete.
If automatic setup fails
-
click [MANUAL CONFIGURATION].
-
Configure the [Incoming server settings]. Perform settings referring to the following information:
After entering the information, click [Continue].Protocol IMAP Hostname imap.sfc.keio.ac.jp Port 993 Connection security SSL/TLS Authentication method Normal password Username CNS login name(e.g. z00001tk)
-
Configure the [Outgoing server settings]. Perform settings referring to the following information:
After entering the information, click [Test].Protocol SMTP Hostname smtp.sfc.keio.ac.jp Port 465 Connection security SSL/TLS Authentication method Normal password Username CNS login name(e.g. z00001tk)
-
If the message "The following settings were found by probing the given server:" appears at the top of the screen, click [Continue].
-
Enter your IMAP/SMTP-AUTH password, then click [Continue].
-
Click [Finish].
- That completes the setup.
Last-Modified: May 28, 2026
The content ends at this position.





