SignThis Reviews 

Written by the company

SignThis is an electronic signature service for small teams and for developers who need signatures inside their own product. A sender uploads a PDF, places the fields and adds the signers, in a set order if needed. Each signer receives a personal email link and signs in a browser on a phone or a computer, with no account and nothing to install. Senders can require an access code, and reminders go out automatically. When the last person signs, the PDF is sealed with a PAdES digital signature and an RFC 3161 trusted timestamp. Everyone receives the sealed copy and an audit certificate. Each step is written to a SHA-256 hash-chained audit trail, so a removed or edited entry is detectable. Anyone can check a completed document in a PDF reader's signature panel, or on the SignThis verify page, which compares the file's fingerprint in the browser without uploading the file. Documents, signatures, field values, names and email addresses are encrypted with AES-256-GCM, each document with its own keys. The site uses no advertising cookies, third-party analytics trackers or email tracking pixels. Plans are billed monthly. Basic is $5 a month for 6 envelopes a month, with no annual commitment. Standard ($20) and Professional ($25) add templates and annual envelope allowances; Professional adds a REST API, signed webhooks and an MCP server for AI assistants, which is read-only unless a key allows more. Business plans start at $30 a seat with single sign-on for Google Workspace and Microsoft Entra, workspace roles and an audit log, on a 12-month commitment billed monthly. New accounts can send 5 documents during their first 40 days without a payment card. SignThis does not offer notarization, identity-document checks, contract lifecycle management or a catalog of ready-made integrations. It is built for one job: send a PDF, collect signatures, and give everyone a sealed copy they can check.See more