CompuServe email can still be accessed by Csmail login through the AOL logging page. I know, this might be a little confusing, but you will be able to get through this, by following these steps:
First and foremost, thing, you need to visit the CompuServe website, which is compuserve.com.
After visiting the website, you will see the option “CompuServe Mail”.
Click on that link or button.
Now, you will be redirected to the AOL login page. It is so because, after AOL bought CompuServe, the email servers were shifted to AOL.
Then, you have to fill in your Username or email address, or phone number by which you used to access your email account.
Optionally, you can also choose the “Stay signed in “option.
By clicking “Next”, you have to enter your password for the email account you are accessing.
Lastly, click “Next” and you will be landed to your inbox.
For destail visit:
https://expertsbadge.com/compuserve-email-login/
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Also read about : https://slashdot.org/submission/13498534/does-compuserve-email-still-exist-compuserve-webmail-cscom