Purchasing & Installing Templates: HubSpot templates can be purchased via the HubSpot marketplace. After purchase, you can download and install them directly from your HubSpot account.
Updates: Updates to templates are handled through the marketplace or directly within the HubSpot design manager. Ensure your template’s code is compatible with future HubSpot CMS updates.
Demo Account: You can create a free HubSpot demo account by signing up for a free CMS account or using HubSpot's free trial.
Redirects: Redirects are set up in the "URL Mapping" section within the HubSpot settings. You can add custom redirects from one URL to another as needed
The Use Themes knowledge base article covers how to purchase, install, clone, and create child themes along with some limitations and other helpful info
We offer both a CMS Developer Sandbox and a Sandbox (from a specific portal — Enterprise subscription required). We also have Content Staging for accounts with Content Hub — Professional