Gmail and Postman

I wanted to try this plugin but gmail is not working any more and Postman:

This plugin has been closed and is no longer available for download.

I have about 1000 wp users and wanted to send letters to them.

I am tired of sendiblue mailchimp and co because of syncing users issues.

I found wp users as list possible ??

But don’t understand why 1 subscriber will be synced as Admin, Subscriber and Contributor!

(id:403)
Edit | Delete
Janie Doe

User without email address! How is this possible? I better delete this entry.
Also after deleting still there??? User added today? Is this coming from your plugin?
Very suspected