Newsletter manager is a simple WordPress plugin that allows you to create and send HTML or plain text email newsletters to your subscribers. The plugin supports unlimited email campaigns, unlimited email addresses, double opt-in anti-spam compliance, and hourly email sending limit.
WHAT’S NEW IN VERSION 1.2.3
Install a license key using a registration key file?
1: Click Install Key after navigating to Tools & Settings > License Management > Plesk License Key.
2: Choose Upload a licence key file.
3: Click OK after providing the path to the key file you downloaded from the email.