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Send eSignature Documents from Using BoldSign

In this blog post, I’ll guide you through the process of using BoldSign APIs in This integration grants you access to a premium eSignature solution, achieved with minimal coding. With these step-by-step instructions and clear explanations, you’ll quickly set up document signing with BoldSign in

Whether you’re a business owner aiming to streamline your document signing process or just someone in need of remote document signing capabilities, this tutorial will help you leverage the powerful combination of BoldSign and for efficient and effective results with very little code.

Getting started

In this section, we’ll go through the initial steps to start using BoldSign APIs with You’ll create a BoldSign account, obtain an API key, and set the stage for integrating eSignature functionality into your application. Let’s get started!

  1. Create a BoldSign account: To use BoldSign APIs, you’ll need a BoldSign account, which can be either a paid or a free sandbox account. If you haven’t created one yet, you can easily sign up for a free account right now.
  2. Get your API key: Next, you’ll require an API key to authenticate your access. You can find the API key on the API Key – BoldSign page. Keep this API key handy; we’ll use it in our Python code later.
  3. Log in to Log in to your account. You can either create a new app or use an existing one where you want to integrate eSignature functionality.

Install API Connector plugin

The API Connector plugin is essential for connecting your app to external APIs, including BoldSign. Once installed, you’ll be ready to integrate eSignature functionality seamlessly.

  1. Open your app.
  2. Navigate to the plugin library.
  3. Click the Add Plugin button.
  4. Search for the API Connector plugin and select it.
  5. Click the Install button to add the plugin to your app.
Install API Connector

Set up API Connector to send a document for signing

Following these steps, you’ll have the API Connector set up to work with the BoldSign API, enabling you to seamlessly integrate eSignature functionality into your app:

  1. Access API connector: Open your app and go to the Plugins section to access the API Connector.
  2. Add new API: Inside the API Connector, click the option to add a new API. Name it something li "BoldSign API".
  3. Configure API settings: In the API settings, provide the API credentials you obtained earlier, including your API key.
  4. Add endpoints: Add the necessary API endpoints for the specific operations you want to perform with BoldSign. For example, if you want to send documents for signature, configure the Send Document API endpoint.
  5. Select Data type as JSON.
  6. Add the following headers for the Send Document API:
  7. Key Value
    accept Application/json
    Content-Type Multipart-formdata
  8. Select Body type as Form-Data
  9. Select a file to send to the signer.
  10. Set the title and message for the signer.
  11. Fill out the recipient’s name and mail.
  12. Add a field to get the signature.
Send document using app
Send a Document for Signing from

Checking the API response

This step is just to ensure you’re on the right track. Click the Reinitialize call button to make sure your app can call the BoldSign API properly.

Reinitialize the API call

You’ll get a document ID in the response, which means the document is sent to the signer. The signer will receive an email with a link to sign the document. That’s all there is to it.

Response from BoldSign

Reference Links

The following links will help you learn more about BoldSign and how to integrate it with


Start integrating BoldSign with today and deliver modern document signing to your users. The best way to experience BoldSign is to sign up for a free sandbox account and try sending a few signature requests yourself.
To get started with BoldSign, check out the BoldSign API documentation. Explore all the BoldSign features in the BoldSign features page.
If you have questions, you can contact us through our support portal. We are always happy to assist you!

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Jayaprakash Kamaraj

Jayaprakash Kamaraj

Jayaprakash Kamaraj is a Product Manager at Syncfusion. He is passionate about front-end technologies and has been active in web development since 2014.

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 Jayaprakash Kamaraj

Jayaprakash Kamaraj

Jayaprakash Kamaraj is a Product Manager at Syncfusion. He is passionate about front-end technologies and has been active in web development since 2014.

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