For Users of Keio Mail with Email Software: Impact and Response to ''Less secure apps your Google Account''

Google has issued a notice (Googles page) to restrict access by insecure applications on Google Workspace for Education.

According to the notice, if you are using Keio Mail (@keio.jp email address) with email software that does not support OAuth, or if you are using email software that does support OAuth but your email settings do not support OAuth, you will no longer be able to use Keio Mail.

If you are using Keio Mail (@keio.jp email address) with your email software, please check the following and take the necessary measures.

Impact

Users of email software that does not support OAuth for accessing Google account data (Gmail, Google Calendar, Contacts) provided by Keio University.

Schedule

from: March 14, 2025

Supported Methods

For current users of Keio Mail with email software

Please take the following 1 or 2 measures as necessary.(We recommend the adoption of 1.)

If you do not take these actions, you will not be able to use Keio Mail with your email software after March 14, 2025.
(*) Your email account will not be terminated (your email address will not be revoked and you will not be able to receive or send email).

Switch to using a web browser or Google Apps for e-mail.
If necessary, take the necessary measures according to the email software you are using, as described in the section "Measures to take with each email software" you are using.

Example: Outlook which can be installed with MS Office 2019 or earlier. If you are using MacOS or iOS email apps or calendars, you may need to delete your account information and re-register.

Notes

If your email software* does not support OAuth, you will not be able to use email.
Example: Outlook which can be installed with MS Office 2019 or earlier
If you are using MacOS or iOS mail applications or calendars, you may need to delete your account information and re-register.

Measures with each mail software

Please take the following actions depending on your e-mail software.

Becky! Ver2

Please refer to the following instructions to update to the latest program.

Becky! Ver.2 のアップデート方法(japanese article)

Please check if your mail settings support OAuth (exsample: Becky! Ver2 (Japanese article)). If not, please change the settings.

Thunderbird

Refer to the following procedure to update to the latest program.

Update Thunderbird to the latest version(Mozilla site)

Please check if your email settings support OAuth (exsample: Thunderbird (Japanese article)) . If not, please change the settings.

macOS Mail

Please check if your mail settings support OAuth (exsample: macOS Mail App）. If not, please change the setting.

If this setting does not work, your computer may have an older version of macOS, so please try upgrading your macOS.

Outlook

Outlook, which can be deployed with Microsoft 365, supports Oauth. Please make sure that your email settings are in exsample: Outlook (Japanese article).

"Outlook（NEW)" (Outlook for Windows)

If you are using mail software added in Windows 11, please refer to this page(japanese article).

MENU