E-Sign

E-Sign is ac-co.ai's electronic signature product — upload a document, place fields on it (signatures, dates, payment, and more), send it to one or more recipients, and track it through to a signed, certified PDF. Every action on an envelope is recorded in a tamper-evident audit trail.

Key concepts

• Envelopes — a document (or set of documents) sent for signature is an envelope. It has one or more recipients, each with their own fields to complete.
• Routing — recipients can sign in sequence (one after another) or in parallel (anyone can sign at any time), or a mix — some groups sequential, others parallel within a group.
• AI field detection — when you upload a PDF, ac-co.ai can automatically detect where signature, date, and text fields likely belong, so you don't have to place every field by hand.
• Payment-at-signing — a payment field can require a recipient to pay before (or as part of) signing, useful for contracts that come with an upfront fee or deposit.
• Certificate of Completion — once every recipient has signed, the final PDF is flattened (fields become part of the document, not editable form fields) and a Certificate of Completion is appended, recording who signed what and when.

How do I…

…send a document for signature?

Upload a PDF, place the fields each recipient needs to complete (signature, date, text, payment), add your recipients, and send. Each recipient gets an email with a secure link to sign — no account or password required on their end.

…change the signing order?

Set each recipient's routing group when you're preparing the envelope — recipients in the same group can sign in any order (parallel); recipients in a later group wait until the earlier group finishes (sequential).

…collect payment as part of signing?

Add a payment field to the document for the recipient who needs to pay — they're prompted to pay before that field is considered complete.

…reuse a document I send often?

Save it as a template with its fields already placed, so next time you only need to add the specific recipients.

…send the same document to many people at once?

Use bulk send with a CSV of recipients — one envelope is created and sent per row, using your chosen template.

…check on an envelope's status?

The dashboard shows every envelope's current status (sent, viewed, partially signed, completed, declined, or expired) along with its full audit trail — every view, field completion, and signature, timestamped.