Electronic Signature &
Digital Signature
Platform
Sign, seal and pay stamp duty — all in one place
- Identity verification with ThaID
- Verifiable digital signatures
- Email signers with flexible sending options
- Electronic stamp duty
- Document summary for verification
- Identity verification with ThaID
- Electronic and digital signatures, sent by email
- Electronic stamp duty
- Signing evidence report
The basics
Electronic signatures and digital signatures
More and more business now happens through electronic and digital transactions. Among them are electronic signature and digital signature systems
Electronic signatures are becoming the new standard for business transactions , with clear usage guidelines in a recommended standard, so organizations can confidently choose the signing method that suits each task and get transactions done faster and more conveniently.
- Sign anywhere, anytime
- No printing, no couriers
- Fast and convenient
Every type has the same legal effect as signing on paper under Thailand's Electronic Transactions Act B.E. 2544 (2001).
Electronic Transactions Act B.E. 2544 (2001)
Electronic signature vs digital signature
Both identify who owns the signature and show that the person accepts the content of the electronic data. Both have the same legal effect as signing a paper document.
Electronic signature
Any letter, character, number, sound or other symbol created in electronic form and used with electronic data.
- Written on screen or a typed name
- Shows intent to accept the content
- Meets Section 9
Digital signature
An electronic signature created by encrypting the electronic data.
- Confirms who owns the signature
- Detects any change to the content
- Meets Sections 26 and 28
Summarised from ETDA's Electronic Signature Guideline (ETDA Recommendation 23-2563)
Standards and security
Standards and security of the Frevation eSigns Flow software
Frevation eSigns Flow is electronic signature and digital signature software for companies and organizations.
It runs in your browser and covers everything from verifying signers' identities to signing, sealing, stamp duty and keeping signing evidence, all in one place.
Developed by Frevation Co., Ltd.
Standards and security
Thai software certified to international standards. Every document can be verified.
- ISO/IEC 29110 from TÜV SÜDOur software development process is certified to an international standard
- All 3 signature types under Sections 9, 26 and 28Under the Electronic Transactions Act
- Identity checks with ThaIDEvery user verifies their identity with the Department of Provincial Administration before signing
- Encrypted signaturesAny change to a document after signing is detected immediately
- Digital certificatesSupports certificates from certificate authorities (CA) and .p12 / .pfx files
- ETDA Sandbox: Remote SigningFrevation eSigns passed all 5 areas of ETDA's Digital Service Sandbox
Outstanding Entrepreneur Award
Frevation Co., Ltd., the developer of Frevation eSigns Flow, in the ISO/IEC 29110 certification programme of the Digital Economy Promotion Agency (depa) and the Digital Industry Club of the Federation of Thai Industries
See all certificates and awards
dSURE mark from depa
Thailand Cybersecurity Excellence Awards 2025
Outstanding Entrepreneur Award from depaOur product
Every feature your documents need in one platform
Verify identity with ThaID, sign electronically or digitally, send for signature by email, add company seals and stamp duty, track status and keep a verification summary, on computer or mobile.
Connected to the Department of Provincial Administration
Verify identity with ThaID
- 1Click Verify with ThaID on the web
- 2Scan the QR code with the ThaID app
- 3Allow data access and enter your PIN
- 4Get verified details and request a certificate
Use cases
For documents across every department
Sales
Send quotations and contracts for customers to sign on their phone right away, and close deals without waiting for a meeting.
Common documents
- Quotation
- Sales contract
- Distributor agreement
Customer
Quotation
QT-2026-018
฿58,500
Customer signed
Take your organization digital
Try it now, or talk to our team about setup, system integration and enterprise plans.
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What you get when you start
- Send your first 5 envelopes right away, with electronic or digital signatures
- Partners sign from an email link, no account needed
- Signer identity checks with ThaID, plus a signing evidence report on every envelope
- A team ready to answer every question by email and LINE
FAQ
Questions about Frevation eSigns Flow?
What's the difference between a digital signature and an electronic signature?
An electronic signature is any signature made electronically. A digital signature is a type of electronic signature that uses a certificate and encryption, so you can verify who signed and that the document hasn't been changed since — ideal for high-stakes documents.
Are documents signed with Frevation eSigns Flow legally valid?
Thailand's Electronic Transactions Act B.E. 2544 (2001) gives electronic signatures legal effect. Frevation eSigns Flow designs its identity verification, signing and evidence steps to support use under that law. Some document types have specific requirements, so check with your legal team.
Do signers need an account?
Signers receive a link by email to sign. For digital signatures, signers need to verify their identity with ThaID and have a certificate first — Frevation eSigns Flow guides them through it.
How do I verify the signatures in a document?
Use the document verification page in Frevation eSigns Flow, or open the file in a PDF reader that supports digital signatures, such as Adobe Acrobat Reader, which shows the signers and whether each signature is valid.
Do you support stamp duty?
Yes. Frevation eSigns Flow supports electronic stamp duty from the Revenue Department. Add the stamp-duty QR code, Frevation eSigns Flow checks that it was issued by the Revenue Department, then places it on the signed document.