API & SDK
Full REST API and SDKs enable embedding signing flows into custom web apps and automating document lifecycle tasks with programmatic control.
Electronic signatures speed transactions, reduce paper costs, and provide a documented audit trail recognized under ESIGN and UETA for U.S. use. They lower administrative burden, shorten sales and onboarding cycles, and improve document security and traceability for compliance and audits.
Organizations across sales, HR, legal, real estate, and healthcare use eSignatures to collect approvals and execute agreements quickly.
IT administrators configure SSO, manage API keys, and enforce security policies. They map user directories, set authentication rules like two-factor, and monitor audit logs to ensure platform-wide compliance and operational reliability.
Business users prepare and send documents for signature, use templates, and track progress. They rely on integrations with CRM or storage systems to prefill data and automate routine approvals to speed up workflows.
Optica uses a simple interface for external customers to sign leases quickly and without confusion
Leading to higher completion rates and fewer follow-ups.
Martin Properties processes rental documents entirely online, including offline mobile signing when agents are on-site
Resulting in consistent, compliant closings with reduced processing time.
Create and reuse document templates with preplaced fields and conditional logic to speed recurring agreements and reduce manual errors in high-volume processes.
Send the same document to many recipients using bulk send to collect individual signatures at scale without creating separate envelopes for each signer.
Sign and collect signatures on iOS and Android apps, including offline mode that syncs signed documents when connectivity is restored.
Every signed document includes a detailed, tamper-evident audit trail showing signer identity, timestamps, IP addresses, and action history for legal admissibility.
signNow runs on modern browsers, mobile apps, and via API to support web, native, and embedded signing scenarios.
For best results, use the latest browser versions and keep mobile apps updated; API integrations require secure keys and adherence to rate limits for reliable performance.
| Setting Name | Configuration |
|---|---|
| Authentication method | Email or SMS |
| Signing order | Sequential or parallel |
| Reminder frequency | 48 hours |
| Document retention | 7 years |
| Audit trail enabled | Yes |
| Capability Comparison for signNow vs Competitors | signNow (Recommended) | DocuSign | Adobe Sign |
|---|---|---|---|
| Bulk send availability | yes, business premium | ||
| API access | full rest api | full api | full api |
| Advanced signer auth | 2fa, sms | 2fa, kba | 2fa |
| Envelope cap | no cap | 100 envelopes/year | varies by plan |
| signNow | DocuSign ($8 ser/mo) | Adobe Sign ($13/user/mo) | PandaDoc ($19/user/mo) | HelloSign ($15/user/mo) | |
|---|---|---|---|---|---|
| Starting Price | $8/user/mo | $8/user/mo | $13/user/mo | $19/user/mo | $15/user/mo |
| Free Trial | 7-day free trial | Trial avail. | Trial avail. | Trial avail. | Trial avail. |
| Bulk Send | Yes, Premium plan | Yes, paid plans | Yes, paid plans | Yes, paid plans | Yes, paid plans |
| Audit Trail | Yes, included | Yes | Yes | Yes | Yes |
| HIPAA Compliant | Yes, BAA required | Varies by plan | Varies by plan | Varies by plan | Varies by plan |
| Envelope Cap | No cap | 100 envelopes/year | Varies by plan | Varies by plan | Varies by plan |
Full REST API and SDKs enable embedding signing flows into custom web apps and automating document lifecycle tasks with programmatic control.
Support for single sign-on allows centralized user management and enforces corporate authentication policies across accounts for enterprise security.
Form logic and conditional fields appear based on prior answers to streamline signers experience and reduce irrelevant data collection.
Integrated payment request features let senders collect payments during signing when configured on supported plans for sales and invoicing.
Kiosk and offline signing modes support in-person signing events and remote locations with intermittent connectivity.
Comprehensive audit trails, SOC 2, ISO 27001, and eSignature legality support to meet regulatory and corporate governance requirements.
30 days default period
Send reminders every 48 hours
Archive on completion
Keep records 7 years
Retain with document