Seamless eSignature Integrations: Automate Workflows in Any App
Embed, customize, and scale your document processes with our developer-friendly API.
Go from concept to your first signed document in minutes, not weeks.
Why Integrate with eSignly?
Move beyond basic e-signing. Build powerful, automated document workflows directly into your products and internal systems with an API designed for performance, security, and developer happiness.
Developer-First Design
Get started in minutes with our clean REST API, comprehensive documentation, and robust SDKs. We prioritize a seamless developer experience so you can focus on building, not debugging.
Ironclad Security & Compliance
Build with confidence on a platform compliant with SOC 2, HIPAA, ISO 27001, and GDPR. All documents are secured with tamper-evident audit trails and robust encryption.
Blazing-Fast Performance
Our globally distributed infrastructure ensures low latency and high availability. Deliver a responsive and reliable signing experience to your users, no matter where they are.
Deep Workflow Customization
Go beyond simple signatures. Use our API to embed signing, pre-fill fields, set signer roles, define routing orders, and trigger actions with webhooks for complete process automation.
Built for Scale
From startups to enterprises, our API handles it all. With transparent, volume-based pricing and an architecture that grows with you, you'll never outgrow our platform.
Seamless Embedded Experience
Keep users inside your application. Our embedded signing and customizable branding options provide a frictionless, white-labeled experience that feels like a native part of your product.
Dedicated Expert Support
Our support engineers are ready to help you succeed. From initial setup to complex workflow design, we provide the expert guidance you need to get the most out of your integration.
Accelerate Business Velocity
Close deals faster, onboard customers quicker, and eliminate manual bottlenecks. Integrating eSignly directly translates to measurable improvements in your business's speed and efficiency.
Predictable, Transparent Pricing
Start for free and scale as you grow. Our API plans are straightforward, with no hidden fees, ensuring you get a clear return on your investment without budget surprises.
Connect eSignly Where You Work
Our versatile REST API and pre-built connectors allow you to embed eSignature capabilities into virtually any application or system. Automate your most critical business processes with ease.
CRM Integrations
Trigger signature requests for quotes, proposals, and contracts directly from your CRM. Automatically update records when documents are signed.
- Connect with Salesforce, HubSpot, Zoho CRM, and more.
- Reduce sales cycle times by eliminating manual steps.
- Maintain a single source of truth for all customer agreements.
Cloud Storage Integrations
Initiate signing workflows from files in your cloud storage and save completed documents back automatically, ensuring organized and secure record-keeping.
- Integrate with Google Drive, Dropbox, OneDrive, and Box.
- Eliminate the need to download and re-upload documents.
- Ensure signed documents are always stored in the right place.
HRM & HRIS Platform Integrations
Streamline employee onboarding and management by integrating eSignatures with your Human Resource Management System for offer letters, policy acknowledgments, and more.
- Connect with platforms like Workday, BambooHR, and SAP SuccessFactors.
- Automate new hire paperwork for a seamless day-one experience.
- Ensure compliance with secure, auditable records for all HR documents.
No-Code & Low-Code Integrations
Connect eSignly to thousands of other applications without writing a single line of code using platforms like Zapier and Make (formerly Integromat).
- Build complex, multi-app workflows in minutes.
- Automate processes across your entire tech stack.
- Empower non-technical team members to create powerful automations.
ERP System Integrations
Embed eSignature workflows into your Enterprise Resource Planning system for procurement, supply chain agreements, and financial approvals.
- Integrate with SAP, Oracle, Microsoft Dynamics, and other ERPs.
- Accelerate procurement cycles and vendor onboarding.
- Create legally binding digital records for critical financial transactions.
Website & CMS Integrations
Allow users to sign documents like registration forms, waivers, or terms of service directly on your website or through your Content Management System.
- Use our website widget for easy embedding.
- Integrate with WordPress, Drupal, Joomla, and custom sites.
- Capture consent and agreements seamlessly as part of the user journey.
Custom Application Integration
Leverage our powerful REST API to build eSignature functionality directly into your proprietary software, SaaS product, or mobile application.
- Gain a competitive advantage by offering native signing features.
- Maintain full control over the user experience and workflow.
- Utilize our extensive documentation and SDKs for rapid development.
Document Management System (DMS) Integration
Add a signing layer to your existing DMS to create end-to-end digital document lifecycles, from creation and collaboration to execution and archival.
- Connect with platforms like SharePoint and other enterprise DMS.
- Ensure version control and a single source for signed documents.
- Enhance security and compliance for your document repository.
Legal Tech & Practice Management
Integrate eSignly into legal tech platforms to streamline client intake, engagement letters, and evidence documentation with court-admissible signatures.
- Ensure compliance with ESIGN, UETA, and other legal standards.
- Create a complete, time-stamped audit trail for every document.
- Improve client experience and firm efficiency.
Healthcare EMR/EHR Integration
Embed HIPAA-compliant eSignatures into your Electronic Medical Record or Health Record systems for patient consent forms, intake paperwork, and treatment plans.
- Ensure patient data privacy and security.
- Reduce paperwork and administrative overhead for clinical staff.
- Create a seamless, digital experience for patients.
Real Estate Platform Integration
Automate the entire property transaction lifecycle by integrating eSignatures into your real estate software for listings, offers, lease agreements, and closing documents.
- Accelerate deals by enabling remote signing for all parties.
- Reduce the risk of errors and missing signatures.
- Provide a modern, convenient experience for agents and clients.
Financial & FinTech Software Integration
Build secure and compliant eSignature workflows into banking, lending, and wealth management applications for account openings, loan agreements, and compliance forms.
- Meet stringent financial industry regulations.
- Enhance security with identity verification options.
- Improve customer onboarding and reduce transaction times.
Embedded Signing & Sending
Provide a completely seamless user experience by embedding the entire signing or sending process within an iframe in your application. Users never have to leave your platform.
- Customize the look and feel to match your brand.
- Increase completion rates by reducing friction.
- Maintain full control over the user journey.
Bulk Sending API
Programmatically send a document or template to hundreds or thousands of recipients at once. Ideal for policy updates, HR announcements, or mass mailings.
- Automate large-scale communication and acknowledgment.
- Track the status of each individual recipient via the API.
- Save countless hours compared to manual sending.
Webhooks & Real-Time Notifications
Configure webhooks to receive real-time notifications about document events (e.g., viewed, signed, completed) to trigger downstream actions in your systems.
- Build event-driven workflows for maximum efficiency.
- Instantly update your database or notify team members.
- Eliminate the need for constant API polling.
Get Started in 3 Simple Steps
Our API is designed for a straightforward implementation, allowing you to integrate powerful eSignature capabilities quickly and efficiently.
1. Get Your API Key
Sign up for a free developer account to instantly get your API keys and access our sandbox environment for testing.
2. Build & Test
Use our clear documentation and SDKs (PHP, .NET, Java, etc.) to build your integration. Test your workflows thoroughly in the sandbox.
3. Go Live
When you're ready, switch from sandbox to production endpoints, choose a suitable plan, and launch your integrated solution to your users.
Developer Tools & Technologies
We support the languages and tools your team already uses, making integration a natural extension of your existing development process.
Real-World Integration Success
See how companies across different industries have leveraged the eSignly API to transform their workflows, accelerate growth, and enhance user experiences.
Case Study: Automating Client Onboarding for a Marketing SaaS
Client Overview
A fast-growing B2B SaaS company providing marketing automation tools needed to streamline their client onboarding process. Their manual system of sending service agreements and statements of work via email was slow, error-prone, and created a poor first impression for new customers.
"The eSignly API was a game-changer. We went from a 3-day manual onboarding process to a 30-minute automated one. Our team can now focus on strategy instead of paperwork."
- Jenna Clay, VP of Operations, ScaleUp SaaS Inc.
Our Solution
eSignly's team worked with the client to integrate our REST API directly into their platform's user registration workflow. We provided a solution that:
- Automatically generates a customized service agreement using data from the signup form.
- Uses embedded signing to present the agreement to the user immediately after they create an account, without leaving the platform.
- Leverages webhooks to instantly provision the new user's account and notify the customer success team once the agreement is signed.
- Files the completed document automatically in the client's CRM record.
Key Challenges
- Lengthy onboarding cycles delaying time-to-value.
- Manual data entry errors in contracts.
- Lack of visibility into document status.
- Poor user experience for new clients.
Case Study: Accelerating Closings for a Real Estate Tech Platform
Client Overview
A technology platform for real estate agencies was struggling with the slow pace of paper-based transactions. Agents, buyers, and sellers were spread across different locations, and coordinating wet signatures for offers, counter-offers, and closing documents was causing significant delays and frustration.
"Integrating eSignly's API allowed us to offer a fully digital experience. Our agents can now close deals from anywhere, on any device. It's a massive competitive advantage."
- Bryce Harlan, CTO, RealtyFlow Properties
Our Solution
We provided RealtyFlow with an API integration that embedded eSignature capabilities directly into their agent and client portals. The solution enabled:
- Agents to prepare and send offers for signature with just a few clicks, pre-filling data from property listings.
- All parties to sign documents securely from their phone or computer, with real-time status updates for the agent.
- Automated routing of documents between buyer, seller, and agents based on predefined workflows.
- A secure, compliant, and fully digital audit trail for every transaction, automatically archived upon completion.
Key Challenges
- Geographically dispersed stakeholders.
- Delays from printing, scanning, and mailing documents.
- High risk of errors or missing signatures on complex forms.
- Lack of a centralized, secure document repository.
Case Study: Digitizing Employee Paperwork for a National Retail Chain
Client Overview
A large retail company with over 200 locations faced a logistical nightmare with HR onboarding. Their process involved mailing new hire packets, which was costly, slow, and resulted in incomplete or lost paperwork, delaying payroll and benefits enrollment for new employees.
"The eSignly integration with our HRIS was flawless. We've onboarded over 5,000 new employees digitally this year. It's saved us thousands in shipping costs and our HR team is finally free from chasing paper."
- Audrey Lambert, Director of Human Resources, RetailCorp USA
Our Solution
eSignly was integrated with the company's existing Human Resources Information System (HRIS). This created a fully digital onboarding workflow:
- When a new employee is added to the HRIS, the API automatically triggers a "new hire packet" containing tax forms, policy documents, and direct deposit forms.
- The new hire receives a single email with a secure link to complete all their paperwork online before their first day.
- The API uses data from the HRIS to pre-populate forms, reducing errors and saving time for the employee.
- Once completed, the signed documents are automatically attached to the employee's record in the HRIS, and the payroll department is notified.
Key Challenges
- High costs associated with printing and mailing.
- Significant delays in receiving completed paperwork.
- Inconsistent and error-prone manual data entry.
- Poor and outdated experience for new hires.
Trusted by Developers and Business Leaders
Our API is built to satisfy the rigorous demands of engineers while delivering the business results that leaders expect.
"The documentation is some of the best I've ever worked with. Clean, logical, with actual useful code examples. We had a proof-of-concept running in an afternoon. The developer experience is clearly a top priority for eSignly."
"We needed a HIPAA-compliant eSignature API to embed in our patient portal. eSignly's security credentials and robust audit trails made them the obvious choice. The integration was smooth and our users love the seamless experience."
"As a startup, we needed a solution that was affordable but could scale with us. eSignly's free API tier let us build and launch without upfront costs. Their pricing is transparent and fair, which is exactly what we needed."
"Integrating eSignly with our Salesforce instance has cut our contract generation and signing time by over 70%. Our sales team can now send and track contracts without ever leaving Salesforce. It has dramatically accelerated our deal velocity."
"Reliability is non-negotiable for us. We process thousands of loan applications a day. eSignly's API has been rock-solid, with fantastic uptime and performance. Their webhook system is also incredibly powerful for our real-time processing needs."
"The bulk sending feature via the API is a lifesaver. We send out annual policy updates to over 10,000 employees. What used to take weeks of manual work is now a single, automated API call that we can track centrally."
Frequently Asked Questions
Our REST API is language-agnostic, meaning you can use it with any programming language that can make HTTP requests. To make it even easier, we provide official SDKs for popular languages including .NET, PHP, Java, Python, and Ruby, along with comprehensive documentation and code examples.
We offer a free tier that allows you to build and test your integration with a generous number of monthly signature requests. Our paid plans are based on the volume of signature requests per month and offer additional features. Pricing is transparent and designed to scale with your usage. Please see our API pricing page for detailed information.
Yes. All electronic signatures created through the eSignly platform, including via our API, are legally binding and comply with the U.S. Electronic Signatures in Global and National Commerce (ESIGN) Act, the Uniform Electronic Transactions Act (UETA), and other international regulations like eIDAS in the European Union.
Absolutely. Our embedded signing feature allows you to display the signing process within an iframe in your application. You can customize colors, logos, and other branding elements via the API to create a seamless, white-labeled experience that matches your application's design.
We offer comprehensive support for developers. This includes detailed API documentation, SDK guides, a developer portal with a sandbox environment, and access to our technical support team via email and our help center. Enterprise plans include options for dedicated support channels and SLAs.
Security is our top priority. We are compliant with leading security standards like SOC 2 Type II and ISO 27001. All data is encrypted in transit and at rest using industry-best practices. Every signed document is sealed with a tamper-evident audit trail that provides a comprehensive history of all events and actions related to the document.
Ready to Build Your Next-Generation Workflow?
Automate, innovate, and accelerate your business. Get your free API key and start building with eSignly today.
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