Docusign API Alternative

A Developer-Friendly Docusign API Alternative

Save up to 84% on eSignature API costs with transparent per-envelope pricing, embedded signing, no complex go-live process, and developer support on every plan. Scroll down for the full feature comparison against the Docusign API.

Create free sandbox Explore the API

No overage penalties
Nothing locked behind a higher plan

Annual cost estimate BoldSign vs Docusign

Envelopes per month100

BoldSign

Enterprise API. $30 per month for the first 40, then $0.75 each.

$900/yr

Docusign

Developer Advanced. $5,760 a year for up to 100 envelopes per month.

$5,760/yr

You save with BoldSign

84% less per year

$4,860/yr

Trusted by 100,000+ organizations worldwide

Why teams switch

Why teams choose the BoldSign API as a
Docusign API alternative

What you get when you build on the BoldSign API: predictable per-envelope pricing, embedded signing, signer identity verification, and a go-live process that takes one key. The head-to-head comparison with the Docusign API follows below.

No overage charges

BoldSign costs $0.75 per document with no surprise fees, giving you clear, predictable pricing for better budgeting.

Powerful API

BoldSign’s API delivers fast, dependable performance with features like embedded signing, custom fields, unlimited sender identities, and developer support.

Coding assistance

Tell us what you need and our team will help you build it in your preferred language, like Python, .NET or Node.js. Moving Docusign code written in .NET? Start with the Docusign to BoldSign migration guide, which includes an AI skill for C#.

AI-powered eSignature workflows

Move faster with AI that detects form fields, finds agreements in plain language, and sends, tracks, and reminds signers through chat via MCP. Explore AI features.

99.99% uptime, SLA-backed

Keep signing workflows available month over month. BoldSign has maintained 99.999% uptime over the past few years.

Easily migrate Docusign templates

Migrate your Docusign templates to BoldSign at no cost. The import is smooth and helps you switch without starting from scratch.

Dedicated developer support

Get expert help through live chat, where 90% of issues are resolved instantly. BoldSign’s support is reliable, even on lower plans.

Pay-as-you-go

Only pay for what you use. BoldSign’s flexible pay-as-you-go model adapts to your business needs, giving you simple, scalable pricing without unnecessary overhead.

No complex go-live process

Go live instantly with no long reviews or approval delays. BoldSign makes integration quick so you can start using eSignatures fast.

Identity verification

Verify signers with access codes, OTPs, government ID checks, and selfie biometrics to ensure secure and authentic signatures. See how signer identity verification works.

Knowledge-based authentication

Verify US signers with questions built from public records. No ID upload, no selfie, and stronger assurance than a one-time passcode. Explore knowledge-based authentication.

Multitenant SaaS app integration

Let each tenant send documents with their identity, with no extra accounts or charges. Ideal for multi-tenant SaaS platforms.

Built by a team that has shipped developer tools since 2001

BoldSign is part of Syncfusion, which has spent more than two decades building components, SDKs and document libraries that other engineering teams run in production. The BoldSign eSignature API is built to the same standard: clear documentation, stable versioning, and support from people who write code themselves.

25+Years building developer tools
400+Fortune 500 companies served
1M+Developers worldwide
41,000+Companies across the Syncfusion ecosystem

Side by side

API comparison

Feature	BoldSign	Docusign
Price per envelope	$0.75	$4.80
Envelopes included	40 per month, then $0.75 each	100 per month
Pay as you go	Yes	Not published
Free sandbox before you buy	Yes	Yes
Go-live process before sending live	Not required	Required
Embedded sending	Yes	Yes
Embedded signing	Yes	Not included
Custom branding	Yes	Yes
Mobile responsive signing	Yes	Yes
Reusable templates	Yes	Yes
Locked templates	Yes	Yes
Signer attachments	Yes	Yes
Drop-down and radio fields	Yes	Yes
Pre-filled and custom fields	Yes	Yes
Drawing fields	Yes	Yes
Scheduled send	Yes	Yes
Text tags for field creation	Yes	Yes
Bulk send	Add-on	Yes
Webhooks	Yes	Yes
SDKs	Yes	Yes
API dashboard	Yes	Yes
Data residency	Yes	Not included
HIPAA support	Yes	Not included
ID verification	Add-on	Not included
Knowledge-based authentication	Add-on	Not included
SMS authentication	Add-on	Contact sales
Qualified electronic signature	Add-on	Not included
Envelope delivery by SMS	Add-on	Not included
Developer support and live chat included	Yes	Needs a paid support plan

Take the full comparison with you

A two-page PDF comparing BoldSign Enterprise API against Docusign Developer Advanced, its highest plan with a published price. Useful if you need to share the detail with your team.

PDF, 2 pages
No email required
Updated August 2026

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Disclaimer: Compares the BoldSign Enterprise API plan with the Docusign eSignature Developer Advanced plan. Based on publicly available information as of August 2026 and may change.

Common questions

Docusign API alternative questions

How does the BoldSign API compare with the Docusign API?

BoldSign Enterprise API includes embedded signing, data residency, HIPAA support and signer identity verification. On Docusign's published developer plans, none of those appear on Advanced, which is its highest plan with a published price. Docusign lists them on the Enhanced plan, which is quoted by sales and needs at least five users.

Does the Docusign API include embedded signing?

Docusign marks embedded signing as "Does Not Include" on its Starter, Intermediate and Advanced developer plans. It appears on the Enhanced plan, which is quoted by sales. Embedded sending is available from Starter, but that is a different feature: it lets your users prepare and send a document in your app, not sign one. BoldSign includes both. See how embedded signatures work.

What is the go-live process for the BoldSign API?

There is not one. Build against the sandbox, generate a live API key, and your existing integration works against production. Nothing else in your code changes. Docusign requires promoting an integration key through a go-live review that runs automated checks on your recent API traffic before you can send live envelopes.

Is an envelope counted when it is sent or when it is signed?

When it is sent. Docusign states that an envelope counts toward your allowance once sent, whether or not it is signed. BoldSign counts on send in the same way. If a signer never completes the envelope, it still uses one from your allowance on either platform.

Can I test the BoldSign API before paying?

Yes. The free developer sandbox gives you full API access with no credit card. Test envelopes are watermarked and removed after 14 days. When you are ready, generate a live key and swap it in. Start from the eSignature API overview.

Do I get developer support on the BoldSign API plan?

Yes. Live chat is included on every plan, including the free one, and we can write integration code in your language. Docusign's developer blog states that its developer and API support is only available to customers who hold a paid support plan.

Which features cost extra on the BoldSign Enterprise API plan?

Bulk links and bulk send are $0.25 each. SMS delivery and SMS authentication are $0.20 per message. WhatsApp delivery is $0.10 per message. ID verification is $2 per check and a qualified electronic signature is $3 per signing attempt. You are charged only when you use them. Every embedding feature is included in the plan itself.

Can I move my Docusign templates and API code to BoldSign?

Yes, and there is no charge for it. Templates, fields and roles carry across. The Docusign to BoldSign migration guide maps the common API calls, covers webhook setup, and suggests moving one workflow at a time so you can check each step before continuing.

Can I embed template creation in my own product?

Yes. Your users can build and edit reusable templates inside your UI, not just sign documents. Read embedded template creation, or the guide to embedded eSignatures for SaaS apps.

Beyond the comparison

Build AI agents that send documents for signature

BoldSign ships a hosted MCP server, so AI assistants like Claude can prepare, send and track signature requests through your BoldSign account using approved templates. Explore the live agent demos across industries, or follow the tutorial and build your own in under 30 minutes.

Interested in the BoldSign pricing plan?

Every plan is published in full: envelope volumes, features and per-envelope pricing. You can work out your total cost before you commit to anything.

View API pricing Explore the API

Security and Compliance

Legally Valid. Fully Secure. Always Compliant.

BoldSign meets top global standards including SOC 2, GDPR, HIPAA, and PCI DSS. Signatures are legally enforceable under the ESIGN Act, eIDAS, and other global laws. AES-256 encryption protects your data from start to finish.