FAQ Questions about the system environment and functions

FAQ (Frequently Asked Questions)

C. Questions about the system environment and functions

1. What are the specifications for Keio Mail?
2. How large is the storage capacity of the email spool?
3. Can I use POP3 protocol with Keio Mail?
   I want to retrieve messages with my email client and store them on my PC instead of using Keio Mail as a Web mail system.
4. Can I use IMAP protocol with Keio Mail?
5. Idon't know how to use Keio Mail with POP3 and IMAP4 protocols.
6. Can I access Keio Mail from a mobile device, such as a mobile phone?
7. How do I use Web mail?
8. Can I forward messages to other email addresses?
9. What is the "POP3 download"?
10. Can I set up and change email forwarding service also after removed member?
11. When I obtain an individual email address and use Gmail, can I integrate it with my Keio mail account?
12. Can I continue to use the service after leaving Keio by graduation, completion, or resignation?
13. Can I use the service with a smart phone?
14. Where will my email data be stored?
15. Can I use it outside Japan?
16. You have lost a terminal using Google Workspace(formerly G Suite) (PC, cell phone, smart phone, etc.). What should you do?
17. When using the email address, can I use an alias (an expanded address)?

(Q1) What are the specifications for Keio Mail?
(A1) Please refer to Notes on using Keio Mail or Using Keio Mail with POP3/IMAP4 in this User's Guide.

(Q2) How large is the storage capacity of the email spool?
(A2) Effective March 15, 2023, capacity restrictions have been placed on My Drive, including mail spool capacity. For details, please refer to "Notification of Capacity Limitation to Google Drive (My Drive) ".

(Q3) Can I use Keio Mail with POP3 protocol? I want to retrieve messages with my email client and store them on my PC instead of using Keio Mail as a Web mail system.
(A3) Yes, you can. For more details, refer to Using Keio Mail with POP3/IMAP4 in this User's Guide.

(Q4) Can I use IMAP protocol with Keio Mail?
(A4) It is available. For more details, refer to Using Keio Mail with POP3/IMAP4 protocols in the User's Guide.

(Q5) I don't know how to use Keio Mail with POP3 and IMAP protocols.
(A5) Refer to Using Keio Mail with POP3/IMAP4 in this User's Guide.

(Q6) Can I access Keio Mail from a mobile phone?
(A6) Yes, you can, except there are some functional restrictions. For more details, refer to Using on mobile(Feature Phone, Gala-kei) . Please note, however, that we have not confirmed compatibility with all mobile devices. Keio Mail uses SSL for communication. You cannot use Keio Mail with devices that do not support SSL.

(Q7) How do I use Web mail?
(A7) There are two ways to log into Keio Mail.
a. Log into the Keio Single Sign-On System and select "Keio Mail" as an application.
b. Log in directly on the login window of Keio Mail.

You can use the same functionality, regardless of which way you log in.

(Q8) Can I forward messages to other email addresses?
(A8) Refer to .

(Q9) What is the "POP3 download"?
(A9) This is a function that allows you to use POP for receiving external email on Keio Mail. You can read email messages on the Web mail system, which is useful when the external email system does not provide a web mail service. Unlike normal forwarding, you can receive messages only when you need to, which helps save on storage. For more details, refer to here .

(Q10)　Can I set up and change email forwarding service also after removed member?
(A10)　Yes, you can.
Please refer to the "Rorwarding setting method".
If you have any questions, contact the Help Desk.

(Q11)　When I obtain an individual email address and use Gmail, can I integrate it with my Keio mail account?
(A11)　The accounts cannot be integrated, but you will be able to switch between accounts by using Google Chrome, or using a separate browser for each account. And you will be able to switch between two email accounts, by setting an additional account.

(Q12)　Can I continue to use the service after leaving Keio by graduation, completion, or resignation?
(A12)　 You will be able to continue to use email forwarding service for one year after separation from Keio. For details, see “Introduction to Google Workspace(formerly G Suite) and precautions concerning changes to the service”.

(Q13)　Can I use the service with a smart phone?
(A13)　Yes, you can.

(Q14)　Where will my email data be stored?
(A14)　It will be stored in the Google data center. For details about the data center, check Data center locations.

(Q15)　Can I use it outside Japan?
(A15)　It is reported that Google services cannot be used in China and other countries or regions.Reference:State of known lack of access to Google services . But now we can use Keio Mail in these areas. For details, please contact the keio.jp Help Desk.

(Q16)　You have lost a terminal using Google Workspace(formerly G Suite) (PC, cell phone, smart phone, etc.). What should you do?
(A16)　Please respond with reference to "Method of dealing with the loss of a terminal using Google Workspace(formerly G Suite) ".

(Q17)　When using the email address, can I use an alias (an expanded address)?
(A17)　Refer to How to Use Aliases for details on aliases.