emSigner API

Input—per 1M tokens

Output—per 1M tokens

Context—tokens

WeightsClosed

About

emSigner API is ranked #18 of 29 in digital signature API software on Inferse. It runs on Android, API, iOS, Self-hosted, Web. There is no free plan. A free trial is offered.

Compared on digital signature API software

Free plan: Noemsigner.com
Embedded signing: Yesemsigner.com
Identity verification: Yesemsigner.com
Workflow status API: Yesemsigner.com
Webhook event types: 4emsigner.com
Signed-file retrieval: Yesemsigner.com
Sandbox environment: Yesemsigner.com

Facts

Purpose: The REST API lets organizations send document-signing requests to emSigner through API endpoints.support.emsigner.com · 2 Oct 2026
API structure: API endpoints cover user management, workflow management, and document management, and requests use JWT authentication.support.emsigner.com · 2 Oct 2026
Envelope size: An envelope can include up to 10 documents with a total file size of 25 MB.support.emsigner.com · 2 Oct 2026
Envelope billing: API pricing is based on envelopes consumed and successful signing transactions in which all parties sign the included documents.support.emsigner.com · 2 Oct 2026
Signature types: The API supports Simple, Advanced, and Qualified Electronic Signatures.developers.emsigner.com · 2 Oct 2026
Signing controls: API workflows can use signature placeholders placed by coordinates or search text and can include signatories, reminders, PDF protection, and watermarks.support.emsigner.com · 2 Oct 2026
Integrations: The maker names Salesforce and SAP connectors and describes using outbound REST calls from CRM or ERP systems.developers.emsigner.com · 2 Oct 2026
Security certifications: The trust center lists SOC 2 Type II, ISO 27001:2022, and ISO 27018:2014 certifications.developers.emsigner.com · 2 Oct 2026
Encryption: The trust center states that stored PII and documents are encrypted with AES-256 and API communications use HTTPS/TLS 1.2 or higher.developers.emsigner.com · 2 Oct 2026
Hosting and deployment: The API and Gateway are available in AWS-hosted cloud with multiple-region data residency, and the maker says it also supports on-premise deployments.developers.emsigner.com · 2 Oct 2026
Support: The API pricing page lists 24x7 support with a response-time SLA under 12 hours.qa-core.emsigner.com · 2 Oct 2026
Trial and sandbox: The pricing page describes a 30-day free trial, while the developer center says demo or sandbox access requires contacting emSigner.qa-core.emsigner.com · 2 Oct 2026
Intended users: The maker describes emSigner as a secure eSignature workflow solution for companies of different sizes and for workflows involving employees, vendors, and customers.developers.emsigner.com · 2 Oct 2026