Waiting for a signed engagement letter is one of the quietest delays in a professional firm. The document is emailed, printed, signed, scanned and emailed back, or it sits unopened for days while work cannot start. Electronic signatures remove most of that friction, and building them into your client onboarding makes the whole process smoother.

But there is a right way and a wrong way to do it. This guide explains how e-signature workflows work, what makes a signature meaningful and what to decide before you build.

What an e-signature workflow does

1. Generate the document from a template, filled with the client’s details.
2. Send it to the right people for signature, in the right order if several must sign.
3. Collect the signature securely, with a record of who signed, when and how.
4. Store the signed copy against the client or matter, with an audit trail.
5. Trigger the next steps, such as opening the matter, sending the first invoice or creating tasks.
6. Remind and escalate if the document is not signed within a set time.

Why the details matter

In many jurisdictions, electronic signatures are legally recognised for a wide range of documents, though some document types are excluded and requirements vary by country. What gives a signature weight is usually more than a drawn squiggle on a screen. It is the evidence around it: identity checks, a tamper-evident record and an audit trail of the signing process.

For engagement letters, contracts and anything that could be disputed, connecting to a specialist provider is usually the safer route than inventing your own. Check what your regulator or governing law requires, and take advice if the stakes are high.

What to decide before you build

• Which documents need signatures, and who signs each?
• Which jurisdictions do your clients sit in, and what level of signature is appropriate?
• Do you need identity verification before signing?
• What happens if someone declines or does not respond?
• Where are signed documents stored, and for how long?
• Who can see them? Access must follow the client and matter rules.

Making templates work

A good template system turns client answers into a finished document: names, services, fees, dates and any conditional clauses. Keep a clear version history of each template, and record which version a client signed. If your wording changes, you will want to know exactly who signed what.

How it fits into onboarding

E-signature works best as one step in a connected flow: intake form, generated letter, signature, payment request, matter opened. Built together, each step triggers the next without anyone chasing, and clients experience one smooth process.

Cost and first step

Builds start at $3,500, with the final quote based on the scope in your PRD, and typical launches take 2 to 6 weeks. The best first step is a Discovery Sprint: a $345 plan covering scope, user flows, architecture and cost, delivered within 24 hours and credited toward the build. See our cost guide for what moves the price. Provider fees for the e-signature service are separate and depend on the provider and volume.

Frequently asked questions

Is an electronic signature legally valid?

In many places, yes, for many documents, but rules differ by country and document type. Check the position where you and your clients operate.

Can clients sign on a phone?

Yes. A mobile-friendly signing flow is important, since many clients will sign on their phones.

Can multiple people sign in order?

Yes. Multi-party signing in a set order can be part of the workflow.

What if the document changes after sending?

Create a new version and record clearly which one was signed. Never alter a document after signature.