Documents you sign every day
- Service and fee contracts
- Authorizations and representation mandates
- Data-protection agreements
- Documents for client procedures
How Agencies & advisory firms use it
When you take on a new client
The engagement letter and power of representation get signed before you start any procedure with an authority.
During the engagement
Authorizations, forms and supporting documents get signed in minutes, without the client stopping by the office.
When you deliver the result
The file holds every signed document and its audit trail, ready for any later review.
Before and after Firmiu
Why choose Firmiu
File faster
Get the client's authorization in minutes and move forward.
Everything documented
Keep each signed authorization with its audit trail.
No travel
Your clients sign from wherever they are, without visiting the office.
How Firmiu works
Upload your PDF
Upload the document and enter the name and email of the person who must sign.
The signer receives a link
They get an email with a unique link and a verification code.
Signed document
The PDF is signed with its audit trail, ready to download.
Frequently asked questions
- Does it work for authorizations and mandates?
- Yes, for most private representation and service authorizations.
- Does the client need to register?
- No. They sign from a unique link by email.
- Can I save my clients?
- Yes, to send new documents in seconds.
- Does it work for powers of attorney and authorizations before authorities?
- Yes, for the authorization document between you and your client. Some specific procedures may require additional formalities depending on the authority and country.
- Can I reuse the same engagement letter for different procedures?
- Yes, you prepare the PDF once and reuse it per client, changing only the details specific to each case.
- Does the client need to create an account to sign?
- No, they get a unique link by email and sign directly, without signing up.
Guide reviewed and updated: July 2026.
Electronic signatures in your country
Related guides
How to sign an authorization or simple power online
Authorizing someone to act on your behalf can be done online. Here's how to sign the authorization.
How much does electronic signature cost?
The price of signing documents online varies a lot. Here's what it depends on and how to start at no cost.
What documents can you sign electronically
Electronic signatures work for far more documents than you'd think. Here are the most common ones and the exceptions.
Digital signatures for other professions
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