How to Install Digital Signature Certificate and Use eSignatures with signNow

TL;DR

Install a digital signature certificate and use signNow to eSign, verify, and manage documents securely. This guide explains what a digital certificate does, how to set it up across web, mobile, and API workflows, compliance essentials for U.S. law, and practical step-by-step instructions for sending, collecting, and storing eSignatures with signNow.

What a Digital Signature Certificate Is

A digital signature certificate is an electronic credential that links a signer to a document and proves the signature is authentic, similar to a stamped seal on paper but cryptographically protected. It uses a private key only the signer controls and a public key others use to verify the signature. In everyday terms, it confirms identity and prevents tampering. In signNow workflows the certificate can be applied or referenced to create legally binding eSignatures while maintaining audit trails and secure storage under domestic compliance rules.

Legal Validity and When to Use It

Digital signature certificates support legally binding signatures under ESIGN and UETA in the U.S. and add cryptographic assurance for sensitive transactions. Use signNow when closing remote sales contracts or collecting employee onboarding signatures at scale. They also help when regulatory proof of signer identity or tamper-evidence is required for records retention or audits.

Who Typically Uses Digital Certificates

Organizations that handle regulated data, remote transactions, or high-value contracts often require digital certificates to strengthen signer authentication and evidence.

• Real estate firms closing leases and escrow remotely.
• Healthcare providers collecting HIPAA-sensitive patient authorizations.
• Finance teams signing loan documents and tax forms.

Typical User Profiles

IT Administrator

An IT administrator configures certificate trust, SSO, and API integrations for signNow. They manage key storage policies, enforce multi-factor authentication, and set tenant-wide document retention rules to align with legal and security requirements across the organization.

Business User

A business user prepares contracts and templates in signNow, applies signature fields, chooses authentication methods, and sends documents for signature. They monitor status updates, reminders, and completion, using audit trails to confirm compliance.

Security Features and Certifications

Encryption In Transit: TLS 1.2 and TLS 1.3

Encryption At Rest: AES-256 encrypted storage

Independent Audit: SOC 2 Type II certified

Health Data Protection: HIPAA compliant with BAA

Regulatory Signatures: 21 CFR Part 11 supported

International Standards: ISO 27001 certified

Real-World Examples

Companies across industries use signNow to apply certificates, automate signature collection, and centralize records for audits and transactions.

Optica Ventures (COO Brian Fitzgibbons)

Optica Ventures adopted signNow to move investor documents online and simplify customer signing

• Templates and mobile signing reduced manual steps
• Faster turnaround for investor approvals and reduced paper handling

Resulting in improved customer convenience and faster deal execution.

Xerox (Director Kodi-Marie Evans)

Xerox integrated signNow with NetSuite to route procurement and approval forms automatically

• API-based workflows pushed signed documents to ERP records
• Centralized signatures reduced reconciliation time and manual entry

Resulting in consistent documentation and faster internal approvals.

Install and Use a Certificate — Quick Steps

Follow these step-by-step actions to install a digital certificate and use it within signNow for signing and verification.

• 01
  Obtain Certificate: Request a certificate from a trusted CA or internal PKI and download the PFX or PKCS12 file locally.
• 02
  Install Certificate: Import the certificate into your device certificate store or browser following OS prompts and enter the certificate password.
• 03
  Configure signNow: In signNow account settings, link the certificate or upload signer credential according to the platform integration options.
• 04
  Apply and Sign: Open the document in signNow, select the certificate-based signature option, choose your installed certificate, and confirm signing.

How Certificate-Based Signing Works

The certificate workflow ties signer identity to a cryptographic key pair and produces tamper-evident signatures during the eSigning process.

• Key Pair: Private key signs; public key verifies signature integrity.
• Signer Identity: Certificate contains verified identity attributes for legal assurance.
• Signature Embedding: Signature and certificate details embed in the signed file and audit trail.
• Verification: Recipients or auditors verify signature using the public certificate.

Core signNow Features for Certificates

signNow supports certificate-aware workflows combined with templates, mobile signing, and secure document storage to simplify adoption across teams.

Templates

Create reusable document templates with preplaced fields and certificate signature placeholders so routine forms can be sent and completed consistently across signers, reducing errors and processing time.

Mobile Signing

Use signNow mobile apps to sign with installed certificates on supported devices or use app-friendly authentication options to collect signatures outside the office while retaining security and audit logs.

Bulk Send

Business Premium supports bulk send to distribute the same document to many recipients at once, maintaining certificate-based signer records and separate audit entries for each completed copy.

Audit Trails

Every certificate-based signature is recorded with timestamps, IP addresses, and certificate metadata, producing a tamper-evident audit trail suitable for compliance and dispute resolution.

Advanced Capabilities and Integrations

Beyond basic signing, signNow offers integration points, advanced authentication, and enterprise options that complement certificate workflows for complex deployments.

API Access

Full REST API lets IT automate certificate-aware signing, embed signing flows into applications, and programmatically retrieve signed documents and audit data for archival.

CRM Integrations

Native connectors for Salesforce, NetSuite, and Microsoft Dynamics enable push/pull of documents and signer metadata, streamlining certificate-based contract lifecycle within business systems.

Advanced Auth

Enterprise plans include advanced signer authentication such as two-factor and identity verification to complement certificate evidence for high-risk transactions.

Conditional Fields

Conditional and formula fields allow dynamic forms that show certificate signature fields only when required, reducing signer confusion and ensuring accurate data capture.

Payments Support

Enterprise-level features include integrated payments and request-payment fields, enabling combined signature and payment collection with documented audit trails.

Kiosk Mode

Kiosk and shared-device workflows let on-site signers complete certificate-backed forms securely, while maintaining per-signature audit entries and device restrictions.

Best Practices When Installing Certificates

Follow these practices to minimize risk and ensure certificate-based eSignatures are reliable, auditable, and user-friendly.

Use Trusted Certificate Authorities

Obtain certificates from reputable CAs or well-managed internal PKI. Ensure certificate metadata matches signer identity and that issuance follows organizational identity verification policies.

Enforce Strong Key Protection

Store private keys in secure hardware or protected OS stores, require passphrase protection, and restrict export of private keys to reduce risk of key compromise.

Document Authentication Policy

Define when certificates are required, which signing methods are acceptable, and what additional authentication (SMS, MFA) is mandated for high-risk documents.

Maintain Audit and Retention Settings

Configure signNow retention and export policies to preserve signed files, certificates, and audit logs for regulatory periods and to support dispute resolution.

Platform Requirements and Compatibility

Confirm device compatibility and certificate formats before deploying certificate-based signing in signNow.

• Web Browser: Modern browsers supported
• Mobile App: iOS and Android apps
• API / SDK: REST API available

Use supported browsers or mobile apps for certificate installation; for large deployments, plan API integration and SSO to manage certificate provisioning and enforce consistent security controls across users.

Recommended Workflow Settings

Configure these key settings in signNow or your integration to support certificate-based signing and secure document lifecycle management.

Setting Name	Configuration
Reminder Frequency	48 hours
Signing Order	Sequential
Authentication Method	Two-factor
Template Library	Centralized
Retention Period	7 years

Pricing and Feature Comparison (Data as of 2026)

High-level pricing and feature differences for quick evaluation. signNow is listed first and shows core plan availability and enterprise capabilities.

	signNow	DocuSign	Adobe Sign	PandaDoc	HelloSign
Starting Price	$8/user/mo annual	$8/user/mo annual	$13/user/mo annual	$19/user/mo annual	$15/user/mo annual
Free Trial	7-day free trial	Varies by plan	Varies by plan	Varies by plan	Varies by plan
Bulk Send	Yes, Premium plan	Yes, select plans	Yes, paid plans	Yes, paid plans	Yes, higher plans
Audit Trail	Yes, full audit trail	Yes, full audit trail	Yes, full audit trail	Yes, full audit trail	Yes, full audit trail
HIPAA Compliant	Yes, BAA required	Yes, BAA available	Contact vendor	Contact vendor	Contact vendor
Envelope Cap	No envelope cap	100 envelopes/user/year	Varies by plan	Varies by plan	Varies by plan

FAQs About Installing and Using Certificates

Common questions and troubleshooting steps for certificate installation, signing, and integration with signNow.

• How do I start a free trial?
  Sign up for the 7-day free trial in signNow without a credit card. Create a workspace, upload a document, and test certificate-based signing using a sample certificate or development key to validate workflows.
• Why does my browser not show the certificate?
  Certificates must be installed into the browser or OS certificate store. Check that the PFX/PKCS12 file was imported successfully, the private key is present, and browser trust settings permit usage for client authentication.
• How do I request a BAA for HIPAA workflows?
  Contact signNow account support to request a Business Associate Agreement; ensure your account plan and configuration meet HIPAA requirements before transmitting protected health information.
• What if bulk send fails for many recipients?
  Confirm recipient address formatting, bulk CSV template columns, and plan entitlements. For Business Premium bulk send, verify rate limits and check for transient network or API errors.
• How can I verify a signed certificate later?
  Download the signed PDF and review the embedded certificate metadata and signNow audit trail. Use verification tools to check certificate chain and timestamp integrity if needed for audits.
• How to handle mobile or offline signing?
  Use the signNow mobile app to capture signatures offline; signed packages and audit data will sync when connectivity resumes. Ensure the app has access to installed certificates or uses supported mobile authentication.

Managing Audit Trails and Evidence

Maintain complete evidence for certificate-based signatures: capture events, store artifacts, and export records for audits.

01

Enable Audit Logging:

Turn on full audit logging

02

Capture Timestamps:

Record precise signature timestamps

03

Store Certificates:

Archive public certificate data

04

Export Reports:

Download CSV and PDF logs

05

Retain Originals:

Keep original signed files

06

Review Regularly:

Periodic audit and verification