A short explanation of form backends, compared with building your own endpoint.
A form backend is a hosted URL that acceptsPOST from an HTML form, stores the fields, and notifies you. You keep the form’s look and host; the backend handles storage, spam, and email.
Build your own if you already have a server, unusual processing, or strict data-residency rules you must implement in-house. Use a service like Formcask when the site is static or you do not want to maintain mail credentials, a database, and retry logic for every brochure site.
Formcask accepts urlencoded, JSON, and multipart posts, filters obvious bots with a honeypot and rate limit, and shows submissions in a dashboard grouped by client workspace. Pro adds signed webhooks (HMAC-SHA256, automatic retries) and file uploads.