Send a document for signing and request attachments with C# Client using the API

Use airSlate SignNow’s API to ensure data collected from your customers is 100% complete. Create and send an attachment request for one or several additional documents required to complete your workflow.

  • Free to test
  • Fast to deploy
  • Powerful & secure

Request additional documents from signers

Use the sample code to make a request for documents to be added to an existing eSignature workflow.

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  • We provide developers with complete SDKs for all popular languages, allowing them to integrate eSignature workflows without writing a single line of code.
  • With our detailed documentation, integrating the airSlate SignNow API is a breeze.
  • The airSlate SignNow API not only provides you with eSignatures: use it to create fillable forms, request payments, and download & archive documents using simple API calls.

airSlate SignNow regularly wins awards for ease of use and setup

Read our reviews on the trusted resources

Tech Data uses airSlate SignNow to improve our internal and external customer service while increasing our speed to revenue.
Bob Dutkowsky CEO
Bob Dutkowsky | CEO

Select an API package for your business

Integrate eSignatures into your software and get 250 legally-binding signature invites with your API free trial.

Check API pricing

Solution engineers

We are here to help you configure eSignature API to your workflow.

Review airSlate SignNow’s API documentation

The detailed API tutorial will guide you through the entire integration process and provide clear coding examples.

Video guides

Watch our video guides for instructions on how to easily build custom integrations.

Start with any of our SDKs

Get complete SDKs for Node.js, Python,
PHP, Java, C#.

Enterprise-grade security and compliance

airSlate SignNow is committed to protecting your sensitive information by complying with global industry-specific security standards.

GDPR compliance
GDPR compliance
Regulates the use and holding of personal data belonging to EU residents.
SOC 2 Type II Certified
SOC 2 Type II Certified
Guarantees the security of your data & the privacy of your clients.
PCI DSS certification
PCI DSS certification
Safeguards credit/debit card data for every monetary transaction a customer makes.
21 CFR Part 11
21 CFR Part 11
FDA-backed standards for electronic documentation and electronic signatures.
HIPAA compliance
HIPAA compliance
Protects the private health information of your patients.
CCPA compliance
CCPA compliance
Enhances the protection of personal data and the privacy of California residents.

Watch the airSlate SignNow API in action

Evaluate airSlate SignNow's send a document for signing and request attachments with c client for api

The airSlate SignNow API equips organizations with a distinctive array of functionalities that promote more efficient business operations. Discover the benefits of our send a document for signing and request attachments with c client for api by using a complimentary Sandbox account.

To set up a Sandbox account, follow these instructions:

  1. Navigate to the airSlate SignNow Developers page. Here, you can find additional details regarding the API and initiate your Sandbox account registration.
  2. Register for a trial. Enter your email address and press the Create API sandbox button to complete your registration.
  3. Verify your email address. Access the email you receive and click the link to confirm your email address.
  4. Access Developer Sandbox. Set a password to facilitate further access to your developer account.
  5. Incorporate an application. Click Add App, assign a name to your app, and click Add to save the changes. The API token for the app will be created automatically.
  6. Evaluate send a document for signing and request attachments with c client for api. Investigate all airSlate SignNow features and how they can improve your business procedures.

Adhere to these directions to evaluate airSlate SignNow's functionalities. If you have any inquiries, feel free to reach out to the support team. Optimize your business operations with airSlate SignNow today.

How it works

Create an account and get the required tokens
Use code samples to send a document for signing and request attachments with C# Client using the API
Enjoy the power of eSignature in your workflows

Watch our instructions to build custom integrations with ease

airSlate SignNow offers a free testing environment to explore the eSignature.

Trusted eSignature solution — what our customers are saying

Explore how the airSlate SignNow eSignature platform helps businesses succeed. Hear from real users and what they like most about electronic signing.

It's very intuitive. When doing a multi-sign document, the colors make the different signers stand out. It's a much better experience than Adobe Sign which is very confusing.
5
anonymous

It's very intuitive. When doing a multi-sign document, the colors make the different signers stand out. It's a much better experience than Adobe Sign which is very confusing.

Read full review
We used the trial version to test this service out, it has worked really well for us and our youth baseball association. I am glad the trial version let me use it almost exactly like the paid
5
Abbotsford Minor Baseball A

We used the trial version to test this service out, it has worked really well for us and our youth baseball association. I am glad the trial version let me use it almost exactly like the paid version. Many other providers do not let the trial version be used that way. This is why we chose airSlate SignNow!! Thank-you!!

Read full review
Easy to use!
5
Austin

Overall great product! My collogues and I use this all the time and have not intentions to move to anything else.

I use this on a weekly basis. When we have customers needing to sign paperwork. It is very easy and quick process.

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Ready to get started?

FAQs

Below is a list of the most common airSlate SignNow API questions and answers. Just choose a question to view a detailed answer.

Need help? Contact support

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Ready to get started?

It’s time to watch the airSlate SignNow API in action. Create your developer account and upload documents, request signatures, and check the status of your document.

Why choose the airSlate SignNow API?:

  • Free to test and easy to deploy
  • SDKs for popular languages
  • Customizable for any workflow
  • Industry-leading security & compliance