You can now add new users into your own repository through a FormSG form.
Do let us know if your email isn't whitelisted as we have to manually add in the whitelisted email domains.
Traditionally, agency users are required to procure their own SSL certs and send it to the Isomer team to install it on our CDN (Content Delivery Network).
With Let's Encrypt, Isomer is now able to support the provisioning of SSL certs for free.
Reach out to us if you're interested in exploring this option!