Hand a document to an office in Conakry without a stamp on it and watch what happens. It gets set aside. Not rejected exactly, just not acted on, because a page with a signature and no cachet reads as a draft. Someone will ask you to bring it back stamped.
This reflex is strong, it is widely shared, and any conversation about electronic signature in this market runs into it within about four minutes. So it is worth taking seriously rather than dismissing.
What the stamp actually does
Three distinct jobs, usually confused with one another.
It says the document is institutional, not personal. A signature is a person. A stamp is the organisation standing behind that person. When a manager signs a purchase order, the stamp is the difference between their promise and the company’s.
It signals authority. The stamp is kept in a drawer, and not everyone has the drawer. Its presence implies someone with standing looked at this and let it out of the building. In practice this is often the most useful thing it does: it is an internal control that happens to be visible externally.
It is a ritual that makes the document feel final. This one is easy to sneer at and should not be. Ceremony is how organisations mark that a decision has been taken. Every legal system has some version of it.
Those are real functions and they deserve real replacements.
What the stamp never did
It never proved anything about the document.
A rubber stamp is an image, and it has the same weakness as a scanned signature: anyone holding it can apply it to anything, it can be photographed and reproduced, and once a document is stamped there is no record of who stamped it, when, or whether the pages changed afterwards. A stamp on page 4 says nothing about page 2.
It also does not establish who signed. The stamp is the organisation’s mark, not the individual’s, and an unsigned stamped page identifies nobody at all.
None of that makes the stamp useless. It makes it a signal of internal process, not a piece of evidence. Those are different things and it is worth keeping them apart.
What carries the weight electronically
Take the three jobs one at a time.
Institutional, not personal. In an electronic envelope, the signer is identified as a named person, and the sending organisation is identified as the account that issued the document. Both are in the record, separately, rather than collapsed into one ink mark. A branded envelope — your logo on the signing page and the notification — carries the institutional signal visually, in the place the recipient actually looks.
Authority. This is where electronic signing is genuinely better than the drawer. You can set a signing order so a document goes to a director before it goes to the client, which encodes the approval step rather than trusting that whoever holds the stamp remembered to check. Where a signer’s mandate matters, you can require them to upload it, and it is attached to the record permanently.
Finality. The seal is the new ritual, and it is a stronger one. A stamped paper contract can be altered by replacing a page. A sealed document cannot be altered at all without it showing. The certificate page attached to the file states who signed, when, and how each person was identified.
Can you still put the stamp on it?
Yes, and many organisations do during the transition. Place an image of the cachet in the document before you send it for signature, or add it as a field. There is nothing wrong with this and it smooths the handover for recipients who expect to see one.
Be clear with yourself about what it is, though. The stamp image is decoration on an electronically signed document. The evidence is the seal and the certificate page. If you find yourself relying on the stamp rather than the seal, you have carried the old habit across without the thing that made it worth carrying.
When the other side insists
Sometimes a counterparty, a bank, a ministry, a long-standing supplier, will simply require a stamped paper original. That is their prerogative, and arguing about it rarely wins the day.
The practical answer is to stop treating it as all or nothing. Sign electronically with the counterparties who accept it, which will be most of your commercial relationships, and print the handful that insist. You will still remove the majority of the round trips, and the documents where evidence actually matters will be the ones with a proper record behind them.
Where the law sits
Guinean law recognises electronic writing and signature as evidence where the signer can be identified and the document’s integrity is guaranteed. The stamp is not part of that test in either direction: its presence does not satisfy the conditions, and its absence does not defeat them. What the conditions ask for is identification and integrity, which is what a sealed document with a certificate page is built to provide.
General information, not legal advice. Some documents and some counterparties carry specific formal requirements, and those are a question for your lawyer rather than for a blog post.
The e-signature product page covers what lands inside a sealed file, including custom branding on the signing page.