Hi @mobi5965
Thank you for taking the time to share your honest feedback.
WP Mail SMTP does not send spam after installation/uninstallation, you’re most likely receiving the WP Mail SMTP newsletter.
So that we can confirm if we’ve received your unsubscribe request, please let us know when you contact us.
Also, please note that if you’d like to update your email preferences/unsubscribe, you can do so by clicking on either the “Update subscriptions” or “Unsubscribe” options at the bottom of any of our newsletter emails.
When doing that, please ensure that yo have selected the option to unsubscribe from all mailing lists.
I hope that helps!