User Guide

Configure webhook mTLS in Adobe Acrobat Sign

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Adobe Acrobat Sign Guide

What's New

  1. Pre-Release Notes
  2. Release Notes
  3. Important Notifications

Get Started

  1. Quick start guide for administrators
  2. Quick start guide for users
  3. For Developers
  4. Video tutorial library
  5. FAQ

Administer

  1. Admin Console Overview
  2. User Management
    1. Add, edit, and review active users
      1. Review your active users from the Users tab
      2. Add a User
      3. Add Users in Bulk
      4. Add Users from your Directory
      5. Add Users from MS Azure Active Directory
      6. Migrate users between Admin Console organizations
    2. Admin Console SSO
    3. Create function-focused users
      1. Technical accounts - API driven
      2. Service accounts - Manually driven
    4. Review users who haven't completed verification
    5. Check for users with provisioning errors
    6. Change Name/Email Address
    7. Edit a user's group membership
    8. Edit a user's group membership through the group interface
    9. Promote a user to an admin role
    10. User Identity Types and SSO
    11. Switch User Identity
    12. Authenticate Users with MS Azure
    13. Authenticate Users with Google Federation
    14. Product Profiles
    15. Login Experience 
  3. Group management
    1. Groups overview
    2. Create a group
    3. Edit group settings
    4. Edit group name
    5. Add users to a group
    6. Delete a group
  4. Account/Group Settings
    1. Settings Overview
    2. Global Settings
      1. Account tier and ID
      2. New Recipient Experience
      3. Self Signing Workflows
      4. Send in Bulk
      5. Web Forms
      6. Custom Send Workflows
      7. Power Automate Workflows
      8. Library Documents
      9. Collect form data with agreements
      10. Limited Document Visibility
      11. Attach a PDF copy of the signed agreement 
      12. Include a link in the email
      13. Include an image in the email
      14. Files attached to email will be named as
      15. Attach audit reports to documents
      16. Merge multiple documents into one
      17. Download individual documents
      18. Upload a signed document
      19. Delegation for users in my account
      20. Allow external recipients to delegate
      21. Authority to sign
      22. Authority to send
      23. Power to add Electronic Seals
      24. Set a default time zone
      25. Set a default date format
      26. Users in Multiple Groups (UMG)
        1. Upgrade to use UMG
      27. Group Administrator Permissions
      28. Replace recipient
      29. Audit Report
        1. Overview
        2. Allow unauthenticated access on the transaction verification page
        3. Include reminders
        4. Include view events
        5. Include agreement page/attachment count
      30. Transaction Footer
      31. In Product Messaging and Guidance
      32. Accessible PDFs
      33. PDF/A workflows
      34. Healthcare customer
      35. New request signature experience
      36. New custom workflow experience
      37. New create template experience
    3. Account Setup / Branding Settings
      1. Overview
      2. Add logo
      3. Customize company Hostname/URL    
      4. Add company name
      5. Post agreement URL redirect
    4. Signature Preferences
      1. Well formatted signatures
      2. Allow recipients to sign by
      3. Signers can change their name
      4. Allow recipients to use their saved signature
      5. Custom Terms of Use and Consumer Disclosure
      6. Navigate recipients through form fields
      7. Restart agreement workflow
      8. Decline to sign
      9. Allow Stamps workflows
      10. Require signers to provide their Title or Company
      11. Allow signers to print and place a written signature
      12. Show messages when e-signing
      13. Require signers to use a mobile device to create their signature
      14. Request IP address from signers
      15. Exclude company name and title from participation stamps
      16. Apply Adaptive Signature Draw scaling
    5. Digital Signatures
      1. Overview
      2. Download and sign with Acrobat 
      3. Sign with Cloud Signatures
      4. Bulk digital signatures config
      5. Require digital signatures per recipient
      6. Include metadata for Identity Providers
      7. Restricted Cloud Signatures Providers
    6. Electronic Seals
    7. Digital Identity
      1. Digital Identity Gateway
      2. Identity Check policy
    8. Report Settings
      1. Enable classic Reporting
      2. New report experience
      3. Classic report settings
    9. Security Settings
      1. Single Sign-on settings
      2. Remember-me settings
      3. Login password policy
      4. Login password strength
      5. Web session duration
      6. PDF encryption type
      7. API
      8. User and group info access
      9. Allowed IP Ranges
      10. Account Sharing
      11. Account sharing permissions
      12. Agreement sharing controls
      13. Signer identity verification
      14. Agreement signing password
      15. Document password strength
      16. Block signers by Geolocation
      17. Phone Authentication
      18. Knowledge-Based Authentication (KBA)
      19. Allow page extraction
      20. Document link expiration
      21. Upload a client certificate for webhooks/callbacks
      22. Timestamp
    10. Send Settings
      1. Show Send page after login
      2. Agreement creation experiences
      3. Require recipient name when sending
      4. Lock name values for known users
      5. Allowed recipient roles
      6. Allow e-Witnesses
      7. In-person signing config
      8. Allow in-person signing
      9. Recipient groups
      10. CCs
      11. Required fields
      12. Attaching documents
      13. Field flattening
      14. Modify Agreements
      15. Remove recipients from in-flight agreements
      16. Agreement name
      17. Languages
      18. Private messages
      19. Allowed signature types
      20. Reminders
      21. Signed document password protection
      22. Send Agreement Notification through
      23. Signer identification options
        1. Overview
        2. Signing password
        3. Knowledge-based authentication
        4. Phone authentication
        5. WhatsApp authentication
        6. One-Time Password via Email
        7. Acrobat Sign authentication
        8. Cloud-based digital signature
        9. Digital Identity authentication
        10. Government ID
        11. Signer Identity reports
      24. Populate form fields with identity-verified data
      25. Content Protection
      26. Enable Notarize transactions
      27. Document Expiration
      28. Preview, position signatures, and add fields
      29. Signing order
      30. Add myself
      31. Send only to internal recipients
      32. Download agreement link
      33. Form field borders
      34. Liquid mode
      35. Custom workflow controls
      36. Upload options for the e-sign page
      37. Post-sign confirmation URL redirect
      38. Restrict access to shared agreements
    11. Message Templates
      1. Overview of Message Templates
      2. Creating new Message Templates
      3. Editing Message Templates
      4. Deleting Message Templates
    12. Bio-Pharma Settings
      1. Overview
      2. Enforce identity authentication
      3. Signing reasons
    13. Workflow Integration
    14. Notarization Settings
    15. Payments Integration
    16. Signer Messaging
    17. SAML Settings
      1. SAML Configuration
      2. Install Microsoft Active Directory Federation Service
      3. Install Okta
      4. Install OneLogin
      5. Install Oracle Identity Federation
    18. Data Governance
      1. Data Governance overview
      2. Configure retention rules
      3. Manage retention rules    
    19. Time Stamp Settings
    20. External Archive
    21. Account Languages
    22. Email Settings
      1. Email header/footer images
      2. Permit individual user email footers
      3. Customize the Signature Requested email
      4. Customize the To and CC fields
      5. Enable Linkless Notifications
      6. Customize email templates
    23. Migrating from echosign.com to adobesign.com
    24. Configure Options for Recipients
  5. Guidance for regulatory requirements
    1. Accessibility
      1. Accessibility Compliance
      2. Create accessible forms with Acrobat desktop
      3. Create accessible AcroForms
    2. HIPAA
    3. GDPR
      1. GDPR Overview
      2. Delete a user
      3. Delete a user's agreements    
    4. 21 CFR part 11 and EudraLex Annex 11
      1. 21 CRF part 11 validation pack
      2. 21 CFR and EudraLex Annex 11 handbook
      3. Analysis of shared responsibilities
    5. Healthcare customers
    6. IVES support
    7. "Vaulting" agreements
    8. EU/UK considerations
      1. EU/UK Cross-border transactions and eIDAS
      2. HMLR requirements for deeds signed electronically
      3. The impact of Brexit on e-signature laws in the UK
  6. Download Agreements in Bulk
  7. Claim your domain 
  8. Report Abuse links
  9. System Requirements and Limitations
    1. System requirements
    2. Transaction limits

User profile and configurable features

  1. Address Book
    1. Overview
    2. Delete address book emails
    3. Reusable recipient groups

Send, Sign, and Manage Agreements

  1. Recipient Options
    1. Cancel an email reminder
    2. Options on the e-signing page
      1. Overview of the e-sign page
      2. Open to read the agreement without fields
      3. Decline to sign an agreement
      4. Delegate signing authority
      5. Restart the agreement
      6. Download a PDF of the agreement
      7. View the agreement history
      8. View the agreement messages
      9. Convert from an electronic to a written signature
      10. Convert from a written to an electronic signature 
      11. Navigate the form fields
      12. Clear the data from the form fields
      13. E-sign page magnification and navigation
      14. Change the language used in the agreement tools and information
      15. Review the Legal Notices
      16. Adjust Acrobat Sign Cookie Preferences
  2. Send Agreements  
    1. Send (Compose) page
      1. Overview of landmarks and features
      2. Group selector
      3. Adding files and templates
      4. Agreement name
      5. Global Message
      6. Completion Deadline
      7. Reminders
      8. Password protect the PDF
      9. Signature type
      10. Locale for the recipient
      11. Recipient signature order/flow
      12. Recipient roles
      13. Recipient authentication
      14. Private message for the recipient
      15. Recipient agreement access
      16. CC'd parties
      17. Identity check
    2. Send an agreement only to yourself
    3. Send an agreement to others
    4. Written Signatures
    5. Compose in-person agreement
    6. Recipient signing order
    7. Send in Bulk
      1. Overview of the Send in Bulk feature
      2. Send in Bulk - Configure a parent template
      3. Send in Bulk - Configure the CSV file
      4. Cancel a Send in Bulk transaction
      5. Add reminders to Send in Bulk
      6. Reporting for Send in Bulk
  3. Authoring fields into documents
    1. In-app authoring environment
      1. Automatic field detection
      2. Drag and drop fields using the authoring environment
      3. Assign form fields to recipients
      4. The Prefill role
      5. Apply fields with a reusable field template
      6. Transfer fields to a new library template
      7. Updated authoring environment when sending agreements
    2. Create forms with text tags
      1. Text Tags - Overview
      2. Text tags - Basics and syntax
      3. Text tags - Supported field types
      4. Text tags - Examples
      5. Text tags - Advanced behaviors
      6. Text tags - Calculated fields
      7. Text tags - Troubleshooting
    3. Create forms using Acrobat (AcroForms)
      1. AcroForm creation
      2. Creating accessible PDFs
    4. Fields
      1. Field types
        1. Common field types
        2. E-signature fields
        3. Initials field
        4. Recipient name field
        5. Recipient email field
        6. Date of signing field
        7. Text field
        8. Date field
        9. Number field
        10. Checkbox
        11. Checkbox group
        12. Radio button
        13. Drop-down menu
        14. Link overlay
        15. Payment field
        16. Attachments
        17. Participation stamp
        18. Transaction number
        19. Image
        20. Company
        21. Title
        22. Stamp
      2. Field content appearance
      3. Field validations
      4. Masked fields values
      5. Setting show/hide conditions
      6. Calculated fields 
      7. Verified forms
    5. Authoring FAQ
  4. Sign Agreements
    1. Sign agreements sent to you
    2. Fill & Sign
    3. Self-signing
    4. Host in-person signing
  5. Manage Agreements
    1. Manage page overview
    2. Copy an Agreement
    3. Delegate agreements
    4. Replace Recipients
    5. Limit Document Visibility 
    6. Cancel an Agreement 
    7. Create new reminders
    8. Review reminders
    9. Cancel a reminder
    10. Access Power Automate flows
    11. More Actions...
      1. How search works
      2. View an agreement
      3. Create a template from an agreement
      4. Hide/Unhide agreements from view
      5. Upload a signed agreement
      6. Modify a sent agreement's files and fields
      7. Edit a recipient's authentication method
      8. Add or modify an expiration date
      9. Add a Note to the agreement
      10. Share an individual agreement
      11. Unshare an agreement
      12. Download an individual agreement
      13. Download the individual files of an agreement
      14. Download the Audit Report of an agreement
      15. Download the field content of an agreement
    12. Bulk actions
      1. Hide multiple agreements
      2. Digitally sign multiple agreements
  6. Audit Report
  7. Reporting and Data exports
    1. Overview
    2. Grant users access to reporting
    3. Report charts
      1. Create a new report
      2. Agreement Reports
      3. Transaction Reports
      4. Settings Activity Report
      5. SMS Transaction Usage
      6. Edit a report
    4. Data Exports 
      1. Create a new data export
      2. Web form data export
      3. Edit a data export
      4. Refresh the data export content
      5. Download the data export
    5. Rename a report/export
    6. Duplicate a report/export
    7. Schedule a report/export
    8. Delete a report/export

Advanced Agreement Capabilities and Workflows

  1. Webforms 
    1. Create a web form
    2. Edit a web form
    3. Disable/Enable a web form
    4. Hide/Unhide a web form
    5. Find the URL or script code 
    6. Prefill web form fields with URL parameters
    7. Save a web form to complete later
    8. Resize a web form
  2. Reusable Templates (Library templates) 
    1. US Government forms in the Acrobat Sign library
    2. Create a library template
    3. Change a library template's name
    4. Change a library template's type
    5. Change a library template's permission level
    6. Copy, edit, and save a shared template
    7. Download the aggregate field data for a library template
  3. Manage Shared Templates
  4. Transfer ownership of web forms and library templates
  5. Power Automate Workflows 
    1. Overview of the Power Automate integration and included entitlements
    2. Enable the Power Automate integration
    3. In-Context Actions on the Manage page
    4. Track Power Automate usage
    5. Create a new flow (Examples)
    6. Triggers used for flows
    7. Importing flows from outside Acrobat Sign
    8. Manage flows
    9. Edit flows
    10. Share flows
    11. Disable or Enable flows
    12. Delete flows
    13. Useful Templates
      1. Administrator only
        1. Save all completed documents to SharePoint
        2. Save all completed documents to OneDrive for Business
        3. Save all completed documents to Google Drive
        4. Save all completed documents to DropBox
        5. Save all completed documents to Box
      2. Agreement archival
        1. Save your completed documents to SharePoint
        2. Save your completed documents to One Drive for Business
        3. Save your completed documents to Google Drive
        4. Save your completed documents to DropBox
        5. Save your completed documents to Box
      3. Webform agreement archival
        1. Save completed web form documents to SharePoint Library
        2. Save completed web form documents to OneDrive for Business
        3. Save completed   documents to Google Drive
        4. Save completed web form documents to Box
      4. Agreement data extraction
        1. Extract form field data from your signed document and update Excel sheet
      5. Agreement notifications
        1. Send custom email notifications with your agreement contents and signed agreement
        2. Get your Adobe Acrobat Sign notifications in a Teams Channel
        3. Get your Adobe Acrobat Sign notifications in Slack
        4. Get your Adobe Acrobat Sign notifications in Webex
      6. Agreement generation
        1. Generate document from Power App form and Word template, send for signature
        2. Generate agreement from Word template in OneDrive, and get signature
        3. Generate agreement for selected Excel row, send for review and signature
  6. Custom Send workflows
    1. Custom Send Workflow Overview
    2. Creating a new Send Workflow
    3. Edit a Send Workflow
    4. Activate or Deactivate a Send Workflow
    5. Send an agreement with a Send Workflow
  7. Share users and agreements
    1. Share a user
    2. Share agreements

Integrate with other products

  1.  Acrobat Sign integrations overview 
  2. Acrobat Sign for Salesforce
  3. Acrobat Sign for Microsoft
    1. Acrobat Sign for Microsoft 365
    2. Acrobat Sign for Outlook
    3. Acrobat Sign for Word/PowerPoint
    4. Acrobat Sign for Teams
    5. Acrobat Sign for Microsoft PowerApps and Power Automate
    6. Acrobat Sign Connector for Microsoft Search
    7. Acrobat Sign for Microsoft Dynamics 
    8. Acrobat Sign for Microsoft SharePoint 
  4. Other Integrations
    1. Acrobat Sign for ServiceNow
    2. Acrobat Sign for HR ServiceNow
    3. Acrobat Sign for SAP SuccessFactors
    4. Acrobat Sign for Workday
    5. Acrobat Sign for NetSuite
    6. Acrobat Sign for VeevaVault
    7. Acrobat Sign for Coupa BSM Suite
  5. Partner managed integrations
  6. Integration keys
    1. Integration key overview
    2. Obtain access
    3. Create a key
    4. Retrieve a key
    5. Revoke a key

Acrobat Sign Developer

  1. REST APIs 
    1. Methods documentation
    2. SDK/Developer Guide
    3. API FAQ    
  2. Webhooks 
    1. Webhook overview
    2. Configure a new webhook
    3. View or edit a webhook
    4. Deactivate or reactivate a webhook
    5. Delete a webhook
    6. Two-way SSL certificates
    7. Webhooks in the API
  3. Sandbox
    1. Sandbox overview
    2. Link your Production and Sandbox
    3. Sandbox asset types

Support and Troubleshooting

  1. Acrobat Sign Server Status
  2. Customer Support Resources 
  3. Enterprise Customer Success Resources 

Secure webhook deliveries using mutual TLS with flexible private key management.

Webhook mTLS (mutual TLS) ensures that both Adobe Acrobat Sign and your endpoint authenticate each other during the TLS handshake. Administrators can choose to upload their own private key and certificate or have Acrobat Sign generate and store the private key. This flexibility reduces the requirements for handling private keys while maintaining compatibility with existing webhook behavior.

This feature is available to Acrobat Sign Solutions and Acrobat Sign for Government accounts.

Certificates can be configured at the account and group level.

  • Group-level settings override account-level settings.

How webhook mTLS works

Webhook mTLS uses a client certificate and private key to authenticate Acrobat Sign to your webhook endpoint during connection.

  • Acrobat Sign presents a certificate during the TLS handshake.
  • Your endpoint validates the certificate before accepting the connection.
  • Webhook payloads, events, and delivery behavior remain unchanged.

Choose a key management method

You must select how the private key is created and managed.

Upload your own private key and certificate

  • Generate the private key and certificate externally.
  • Upload as a PKCS#12 file (.p12 or .pfx).
  • You maintain full control over key generation and lifecycle.

Use this method if your organization requires external key management.

Let Acrobat Sign generate the private key

  • Acrobat Sign generates the private key and a certificate signing request (CSR).
  • The private key never leaves Adobe infrastructure.
  • Submit the CSR to your certificate authority.
  • Upload the signed certificate (PEM format).

Use this method to reduce private key exposure and simplify key handling.

Key differences

Capability Upload your own key Acrobat Sign generates the key
Private key location Customer-managed and stored in Acrobat Sign Generated and stored only within Acrobat Sign
Certificate format PKCS#12 (.p12 / .pfx) PEM (.pem / .crt / .cer)
Workflow Upload the key and certificate together Generate CSR, then upload the signed certificate
Key exposure Key handled externally before upload Key never leaves Adobe infrastructure
Security posture Standard Stronger

When to use each method:

  • Use the upload method if your organization requires external key control.
  • Use the Acrobat Sign-generated method when you want to minimize private key handling and improve security.

Configure webhook mTLS

Select a key management method

  1. Go to Security Settings >Webhook mTLS Certificate Management

  2. Select your preferred key management method:

    • Upload the client certificate
    • Generate CSR

  3. Save the configuration.

    The "Security Setting" page with teh "Webhook mTLS Certificate Management" options highlighted.

If you opt to upload your own certificate:

  1. Provide a password for the certificate.

  2. Upload the certificate (.p12 or .pfx).
    Must include both:

    • Private key
    • Certificate

  3. Save the configuration.

    The mTLS feature with the upload option selected.

After saving, the certificate becomes active immediately for webhook deliveries.

If you opt to let Acrobat Sign generate the private key:

  1. Enter the certificate details:

    • Certificate Name (required)
    • Organization
    • Organizational Unit
    • Location
    • State/Province
    • Country (Two-letter ISO code)
    • Email (Email format)
    • SAN-DNS Names (Optional, Enter one per line)
    • SAN - Email values (Optional, Email format, enter one per line)

  2. Select Generate CSR.

  3. Copy the generated CSR.

    The mTLS feature with the Acrobat Sign generated option selected.

  4. Submit the CSR to your certificate authority and obtain a signed certificate.

  5. Save the configuration.
    The CSR is only saved after selecting Save. If you leave the page, the CSR is lost.

Certificate requirements

PKCS#12 (upload method)

  • Format: .p12 or .pfx
  • Must include both private key and certificate
  • Requires a password

CSR (Acrobat Sign-generated method)

  • Format: PEM (.pem, .crt, .cer)
  • Must include clientAuth usage
  • Must match the generated CSR
  • Must be within its validity period
  • Include intermediate certificates if necessary

Things to know

  • If the certificate expires, webhook deliveries fail until a valid certificate is uploaded.
  • Acrobat Sign continues retry attempts based on the webhook retry policy.
  • Switching between key management methods does not delete existing certificates.
  • CSR and private key are only saved after selecting Save. Leaving the page discards them.
  • Group-level configuration is supported.
  • A new CSR is required when the certificate subject details change or you want to rotate the private key.

Adobe, Inc.

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