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Yes. Under the U.S. ESIGN Act (2000) and UETA, electronic signatures collected through SignFastAi are legally binding across all 50 states for the vast majority of business and personal documents.
No. They receive a secure link by email, open it in any browser, and sign — no download, no sign-up, no password.
Yes — the Free plan lets you send documents every month at no cost, no credit card required.