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Electronic Signature API

Send documents for signing, track progress, and get work done faster with our electronic signature platform built for high volume and ease of integration.

Pricing

$0.10 or $0.25 per envelope

Get legally binding electronic signatures at 1/10th of the price.
All features included.

Integrate with the tools you love

API
API

Integrate electronic signatures into your applications and platforms easily with our simple and powerful API.

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Power Automate
Power Automate

Build electronic signatures into your Power Automate flows, leveraging Microsoft's powerful no-code platform.

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More integrations coming soon

Embedded Signing

Enable your users to sign documents directly within your web or mobile app by embedding the signing interface.

Seamless User Experience.
Streamlined, intuitive UI for in-app document signing, designed to keep users focused on the task.
Easy Implementation.
Add electronic signing to your app quickly with our developer-friendly, well-documented API.
No Dependencies.
Integrate seamlessly using standard elements, without requiring external libraries or dependencies, for a hassle-free setup.
Product screenshot

Legally-Binding Electronic Signatures

Our electronic signatures are globally recognized and legally binding, offering the same legal standing as traditional ink signatures on paper.

ESIGN Act.
The Electronic Signatures in Global and National Commerce (ESIGN) Act, passed in 2000, legally recognizes electronic signatures and records in US commerce.
UETA.
The Uniform Electronic Transactions Act (UETA) aims to provide uniformity and consistency across states in the US by standardizing the legal treatment of electronic records and signatures
eIDAS.
The Electronic Identification and Trust Services (eIDAS) Regulation, effective since 2016, standardizes and legally recognizes electronic signatures across the European Union. Our signatures are classified as eIDAS SES.
International Electronic Signature Laws.
Several international regulations recognize the legality of electronic signatures, ensuring their validity and enforceability in many jurisdictions around the globe.
Signed and all signatures are valid.
Screenshot of a SignatureAPI Audit Log

Features to build on

Embedded Signing
Integrate electronic signatures into your app or platform, creating a seamless signing experience for your users.
Multiple Recipients
Send to up to 10 signers in a single electronic signature transaction.
Parallel or Sequential Signing
Send to all recipients at once or one by one in your preferred order.
Bundle Documents
Combine up to 10 documents into a single envelope for efficient signing.
Document Templates
Create documents programmatically from templates and dynamic data.
Languages & Localization
Customize languages, date-time formats, and time zones in the signing interface.
Accountless Signing
Recipients can sign documents without needing to create or log into an account.
Audit Log
Get an audit log with proof of document access, review, and signature.
Tamper-Proofing
Secure documents with irrefutable, verified proof of integrity post-signature.
Track Envelopes
Monitor the signing progress through a straightforward, user-friendly dashboard.
Real-Time Notifications
Receive immediate updates on signing activities via emails and webhooks.
Unlimited Workflows
Integrate the Signature API seamlessly across an unlimited number of workflows.
Direct Support
Get precise, actionable answers from the engineers who built the platform.

Start integrating today.
No credit card required.