The plugin adds OAuth2 authentication for email accounts.

Starting September 30, 2024, Google Workspace accounts will only allow access to apps using OAuth. Password-based access (with the exception of App Passwords) will no longer be supported. POP and IMAP are NOT going away and can still be enabled with apps that connect using OAuth.

https://workspaceupdates.googleblog.com/2023/09/winding-down-google-sync-and-less-secure-apps-support.html

Nopcommerce 4.70 and never versions support it from the box.

Unregistered version is fully operational. Only 100 emails will be sent and 15 days trial period.

Compatible with NopCommerce 4.60.
If you want to have it for old nop versions you should write to me. 

How to Install and Configure plugin.