Dropbox Sign API alternative
Switch to BoldSign and save up to 70% on eSignature costs with secure, legally compliant eSignatures. A focused eSignature platform, with signing in any browser and no signer account.
- Free sandbox with full API access
- Embedded signing, requesting and templates
Trusted by 50,000+ businesses worldwide
Why teams choose BoldSign as a Dropbox Sign API alternative
Teams choose BoldSign for its ease of use, secure document handling, and pricing that fits their needs.
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Cost and value
- Save
Save on your eSignature costs
BoldSign plans deliver enterprise features without the enterprise price tag. See what switching would save you.
- No tricks
Absolutely no tricks
You won’t hit hidden document limits, feature restrictions or unexpected overage charges.
- Included
Enterprise-grade features at no extra cost
You get custom branding, SSO, signing groups and document retention at no extra charge.
Built for signing
- API
Powerful API
The BoldSign API gives you embedded signing, custom fields, unlimited sender identities and developer support.
- AI
AI-powered eSignature workflows
AI detects form fields and finds agreements from a plain description. Through MCP, you send, track and remind signers from chat.
- Delivery
Multi-channel delivery
You reach signers by email, SMS or WhatsApp, quickly and securely.
- Focused
Focused eSignature platform
BoldSign is purpose-built for eSignatures, not bundled with other tools. Every feature is designed for digital signing.
- Modern app
Modern eSignature app
Users praise its clean, intuitive interface for individuals, teams and whole organizations.
Support and reliability
- Support
Free customer support
Live support, help guides and onboarding resources come at no extra cost.
- 99.99%
Uptime you can plan around
BoldSign commits to 99.99% uptime each month. Its status page shows 99.999% over the past few years.
BoldSign is rated 4.7 out of 5 from 474 reviews on G2.
How do BoldSign and Dropbox Sign API features compare?
BoldSign includes every embedded flow on its Enterprise API plan. The table sets it against the Dropbox Sign Standard API plan, its top published plan. Prices are in USD.
| Feature | BoldSign | Dropbox Sign |
|---|---|---|
| Price per envelope | $0.75 per envelopeEnterprise API plan | $2.50 per signature requestStandard API plan, $250 a month for 100 requests |
| Embedded send | Yes | Yes |
| Embedded sign | Yes | Yes |
| Embedded template creation | Yes | Sales quote requiredPremium API plan |
| Custom branding | Yes | YesPremium branding needs a sales quote |
| Embedded mobile responsive | Yes | Yes |
| Send document on behalf (without account) | Yes | Not published |
| Text tags | Yes | Yes |
| Automatic PDF field detection | Yes | Yes, in beta |
| Embedded custom fields | Yes | Not published |
| Webhooks | Yes | Yes |
| Free support | Yes | Yes |
| Live chat | Yes | Yes |
Not published means Dropbox Sign’s pricing page, API documentation and help centre do not state it.
Spotted something outdated? Tell us at support@boldsign.com.
How do BoldSign and Dropbox Sign API prices compare?
BoldSign bills by the envelopes you send. Dropbox Sign bills by the request volume you choose each month. The first table shows the plan each one needs for embedded features. The second works out yearly totals. Prices are in USD.
| Capability | BoldSignEnterprise API plan$30 a month | Dropbox SignAPI plansfrom $75 a month |
|---|---|---|
| Lowest plan with embedded signing | $30 a month | $250 a month, Standard API plan |
| Lowest plan with embedded template creation | $30 a month | Premium API plan, price not published |
| Reusable templates | Unlimited | 15 on the plan with embedded signing |
| What the bill follows | Envelopes you send | Monthly request volume you pick |
| Scenario, billed yearly | BoldSign | Dropbox Sign |
|---|---|---|
| Without embedded signing | ||
| 600 signature requests a year | $450Enterprise API plan | $900Essentials API plan |
| With embedded signing | ||
| 600 signature requests a year | $450Enterprise API plan | $3,000Standard API plan |
| 1,200 signature requests a year | $900Enterprise API plan | $3,000Standard API plan |
Above 100 requests a month, Dropbox Sign prices the plan on the volume you pick. The BoldSign pricing calculator works out a total from your own volume.
Comparing the web apps instead? See how BoldSign compares with Dropbox Sign
Which apps does the BoldSign API connect to?
BoldSign connects with your CRM, accounting, automation and cloud storage tools. You send for signature and keep signed copies where your team already works.
CRMHubSpot
Send, track and save signed contracts from inside HubSpot.
See the HubSpot integration
CRMSalesforce
Send and manage signature requests from your Salesforce records.
See the Salesforce integration
AccountingXero
Bring your Xero contacts into BoldSign to prepare documents faster.
See the Xero integration
AutomationZapier
Connect BoldSign to thousands of apps with Zaps.
See the Zapier integration
AutomationPower Automate
Add sending and tracking steps to your Power Automate flows.
See the Power Automate integration
Cloud storageOneDrive
Send files from OneDrive and save signed copies back to it.
See the OneDrive integration
Cloud storageGoogle Drive
Store signed files in Google Drive, synced and ready.
See the Google Drive integration
Cloud storageDropbox
Keep signed documents synced in your Dropbox folders.
See the Dropbox integration
How does switching from the Dropbox Sign API work?
BoldSign support helps teams move an integration across. You keep your application and swap the calls it makes.
How the move works
Create a free sandbox
Sign up for the sandbox and generate an API key. Test documents carry a watermark and are deleted after 14 days.
Set up your templates
Build each template in your sandbox, then move it to your live account as a JSON file. The guide on exporting and importing templates shows how.
Swap your API calls
Point your send, status and download calls at BoldSign. Register your webhook URL in the API dashboard.
How are documents signed through BoldSign kept secure?
BoldSign encrypts every document twice with AES-256. Signatures you collect with BoldSign are legally binding under the ESIGN Act, UETA, and eIDAS.
Compliance
BoldSign meets global security and compliance standards to protect your documents and data. Manage the settings below to align with your organization’s requirements.
Data Residency
Active (US - Global)Your documents and signer data are securely stored in your selected region to meet data sovereignty and local regulatory requirements.
HIPAA Compliance
EnabledEnable HIPAA mode to protect PHI using administrative, technical, and physical safeguards aligned with HIPAA regulations.
PCI DSS
CompliantPayments are securely processed through Stripe, a PCI DSS Level 1-certified provider, ensuring the safe handling and encryption of all payment data.
CCPA & CPRA
CompliantEnsures compliance with California privacy laws, giving residents transparency and control over their personal data, including rights to access, delete, and opt out.
SOC 2 Type II
CompliantBoldSign has successfully completed a SOC 2 Type II audit, validating our controls for security, availability, confidentiality, and data integrity.
UETA & ESIGN
CompliantBoldSign ensures that all e-signatures are legally binding and compliant with the U.S. ESIGN Act and the Uniform Electronic Transactions Act (UETA).
eIDAS (SES)
CompliantBoldSign complies with the EU eIDAS Regulation (910/2014) and supports Simple Electronic Signatures (SES) by default.
eIDAS (QES)
EnabledEnable Qualified Electronic Signatures (QES) for contracts requiring the highest legal assurance under eIDAS.
Security and procurement documents for eSignature
IT and procurement teams can read BoldSign’s security policy, data processing agreement, and subprocessor list online. They can also request the SOC 2 Type 2 report.
- Sign-in
Single sign-on and user provisioning
Works with Microsoft Entra ID.
See features by plan - Audit report
SOC 2 Type 2 report
Available on request from BoldSign.
Request the SOC 2 report - Data protection
Data processing agreement
Includes the EU Standard Contractual Clauses and the UK Addendum by reference.
Read the data processing agreement - Data protection
Subprocessor list
Every third party BoldSign uses to process data.
See the subprocessor list - Service
Service level agreement
Uptime, support response times, and service commitments.
Find it in the Legal Center
Customer stories from teams that build with the BoldSign API
Payroc, Alliance Regulatory, and Karborea build signing into their own software with the BoldSign API.
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Payroc API signing in contract management
Read story -
Alliance Regulatory Embedded API with account-free signing
Read story -
Karborea Embedded signing speeds up contracts
Read story
Guides to plan your move from the Dropbox Sign API
BoldSign’s pricing page, developer docs and demos help you price, build and test your integration. You can also compare other eSignature APIs.
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Plan your move
- Page
BoldSign API plans and prices
Every API rate and allowance on one page.
- Docs
BoldSign developer documentation
Endpoints, authentication, SDKs, and code samples in five languages.
- Demos
Working API demos
Embedded requesting and signing, in a browser.
Compare other eSignature APIs
- Comparison
BoldSign compared with the Docusign API
For teams weighing Docusign eSignature API plans.
- Guide
The eSignature API buying guide
What to check before you pick an API.
- Comparison
Every eSignature tool compared
Adobe Acrobat Sign, PandaDoc, SignNow and the rest.
Questions developers ask before leaving the Dropbox Sign API
Is there a cheaper alternative to the Dropbox Sign API?
Yes. The BoldSign Enterprise API plan starts at $30 a month with 40 envelopes, then $0.75 each. The Dropbox Sign Essentials API plan is $900 billed yearly, from 50 signature requests a month. See the BoldSign API pricing page.
Is BoldSign a HelloSign API alternative as well?
Yes. The HelloSign API was renamed the Dropbox Sign API. Every plan and price here applies to both names. Compare BoldSign with other eSignature tools.
Does BoldSign charge extra for embedded signing?
No. You pay the envelope rate, not a charge per endpoint. Nothing unlocks at a higher tier. See how embedded signing works in your own app.
Can I test the BoldSign API before I pay?
Yes. The free sandbox gives full API access with no credit card. Test documents carry a watermark and are deleted after 14 days.
How does BoldSign count envelopes?
One envelope is one document sent for signature. Several files in a single send still count as one. Every allowance and rate sits on the API pricing page.
Does BoldSign quote high API volume separately?
Yes. BoldSign publishes a request-a-quote route for high usage on its API pricing page.
Does BoldSign have a Ruby SDK?
No. BoldSign publishes official SDKs for .NET, Java, Node.js, PHP, and Python. A Ruby application calls the BoldSign REST API directly.
What is the BoldSign API rate limit?
A production account can make 2,000 API requests an hour. Larger jobs are spread across the hour, as the rate limit guide explains.
Are BoldSign signatures legally binding?
Yes. Signatures you collect with BoldSign are legally binding under the ESIGN Act, UETA, and eIDAS.
Test embedded signing before you pay for it
The BoldSign sandbox gives you full API access, free. No credit card needed.
- 30-day free trial
- No credit card required
Last updated: October 19, 2026. Disclaimer: This page contains product comparisons based on publicly available information as of October 2026 and may change.