Formstack offers Subdomains that allow you to further customize the URL of your forms. You'll initially set your subdomain when first logging in after creating your account, however, if you want to view or change this you can go to My Account > URLs. Customizing your URL increases brand recognition and provides a more secure customer experience.
Note: Viewing/changing subdomain settings are only available for users with Account Admin permissions.
Click the "Update" button to edit your Subdomain.
Note: Changing this will update the URL for ALL forms in your account and will require replacing those links anywhere they've been placed or re-embedding forms that have been embedded already.
Next, add the text in the space provided to customize the URL for all of the forms on your account and click "Save Settings". This will update the URLs for all forms already created within your account.
The final URL for the form can be viewed from the "Publish" tab of the form builder. The Subdomain for your forms can be changed at any time by following the same process.