EasyESP Email Service Provider
Easy steps to ESP installation and configuration on linux server, exploiting SMTP, SPF, DKIM, DMARK, ADSP with Roundcube, Postfix Admin and phpMyadmin web interfaces, and free trusted SSL certificate automatic renewal. No limits to outgoing emails per hour or per day. Inbox deliverability. Sendy, Interspire can be installed on the same server with EasyESP.
You can deactivate your lifetime license key (simply running a script) for a domain and activate for the same or another, or create multiple servers with different domain names, if necessary, using more EasyESP license keys.