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.
- No overage penalties
- Nothing locked behind a higher plan
Advanced covers up to 100 envelopes per month. Above that, Docusign moves you to the Enhanced plan, which is quoted by its sales team.
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 we will implement it in your preferred language, like Python, .NET, or Node.js. Fast help, tailored to you. Start with the Docusign to BoldSign migration guide.
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
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.
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.
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.
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.
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.
- SOC 2
- GDPR
- HIPAA
- PCI DSS
- ESIGN Act
- eIDAS
- AES-256
Test the API before you spend anything
Everything below is free to start. The numbers stay in front of you the whole way.
Read the developer docs
Send your first envelope for signature from your own code, or start with the API overview.
Read docsDon't take our word for it.
Check out our reviews on G2 to see what customers have to say about BoldSign.
Exactly what I needed for API-based proposals
I needed a way to send and manage proposals programmatically through my web app without manual steps in between. BoldSign's API made that possible and the implementation was straightforward enough that I could get it working quickly without a lot of headaches.
Posted on May 8, 2026
Seamless Signatures with BoldSign, Highly Recommended
BoldSign solves not receiving necessary signatures in a timely manner, especially for customers without a printer or scanner. It provides a seamless way to collect signatures and perform work.
Posted on May 13, 2026
Seamless Transition and Stellar Support with BoldSign
BoldSign offers affordable
e-signatures with an unlimited signature pricing plan and excellent customer support, providing full feature parity without a premium price tag. It's proactive in support and cost-effective compared to our previous use of DocuSign.
Posted on May 27, 2026
Built to scale with your business
Close deals faster, cut costs, and stay compliant. From startups to global enterprises, thousands trust BoldSign to simplify document signing.
Years in business
Customers
Countries
Built-in features
Learn more about switching and
eSignature workflows
Helpful guides for evaluating a Docusign alternative, planning a rollout, and getting the most from your eSignature workflows.
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