Certify SSL Manager is free for up to 5 managed sites on a server, thereafter you need to purchase either a Professional or Enterprise license. You can purchase more than one license key of any type.
Important: Before making your purchase ensure you have trialled the app on your server and that the functionality matches your requirements. This app is subject to limitations imposed by the Let's Encrypt certification process including service availability, domain validation requirements and service rate limits - in particular there is a limit of 20 certificates/renewals per week per 'registered domain'.
* When License Keys expire auto-renewal will continue as normal, additional managed sites can only be added by renewing the license key.