BoldSign is an embeddable e-signature platform with a free tier and paid plans from $5/user/month. See pricing, features, and API details.
Category
Documents & E-signature
Pricing
Freemium, from Free
Verified
Not yet
Last updated
July 18, 2026
Founded
2021
Headquarters
Research Triangle Park, North Carolina, United States
Free PlanWeb AppFree TrialAPIAIFreemiumTemplates
Overview
BoldSign is an electronic signature platform launched in 2021 by Syncfusion, a developer tools company founded in 2001 and headquartered in Research Triangle Park, North Carolina. BoldSign was designed from the ground up to be embeddable into other software products through SDKs and a REST API, while also functioning as a standalone e-signature web app.
The platform targets both end-user businesses that need to send and sign contracts, and software teams that want to build native document-signing workflows into their own applications without routing users to a separate signing service.
Key Features
BoldSign supports reusable templates, bulk sending, bulk signature links, custom branding, and document categorization for tracking sent and received envelopes. Every signature event is captured in a complete audit trail, and completed documents are digitally signed to prevent tampering.
Higher tiers add single sign-on (SSO), custom user roles, HIPAA compliance, AI-powered document capabilities, and Salesforce integration. BoldSign complies with the U.S. ESIGN Act, eIDAS, SOC 2, GDPR, HIPAA, and PCI DSS, making it viable for regulated industries.
Pricing
BoldSign's web app has four tiers: Essential (free, 25 envelopes/month), Growth ($5/user/month annual), Business ($15/user/month annual, unlimited envelopes, SSO, HIPAA), and Premium ($99/month annual, unlimited senders). Monthly billing is available at a higher per-month rate on paid tiers.
Developers integrating signing directly into their own product can instead use the Enterprise API, billed at $0.75 per envelope with a $30/month minimum covering 40 envelopes.
Key Features
Embeddable e-signature API — REST API and SDKs let developers embed sending, signing, and webhooks directly into their own applications.
Reusable templates — Save frequently used contracts as templates to speed up repeat signature requests.
Bulk sending and signature links — Send documents to many recipients at once or generate shareable bulk signing links.
Complete audit trails — Every signing action is logged and available as a downloadable audit trail report.
Custom branding — Apply logos and brand colors to the signing experience.
SSO and custom roles — Business and Premium plans support single sign-on and granular user permissions.