Release notes

To stay current on the most notable feature updates, take a look at the latest release notes. For older releases, see the release notes history.

Release Features and fixes
February 24, 2026 Session-Based PIN Authentication
February 10, 2026

Zitadel SSO Integration (Waterfall UK)

Custom Identity Provider (IDP) Integration via Zitadel

Admin App: Disable Standard Login

Bug Fixes
January 27, 2026

Zitadel SSO Integration (Waterfall US Only)

 

February 24, 2026

Session-Based PIN Authentication

What's New: Enter your PIN once per login session for non-broadcast messaging, while production broadcasts maintain maximum security with per-send authentication.

User Impact:

Where It Applies:

  • Conversations (Bulk & Individual Messaging)

  • Inbox replies

  • Test messages

  • Sweepstakes

  • Subscriber profile actions

How It Works:

  • First Message Send: PIN modal appears → Enter PIN → Session authenticated.

  • Subsequent Messages: No PIN required until logout.

  • Production Broadcasts: Still require PIN every time (unchanged).

Session Expiration:

  • Logs out when you sign out.

  • Times out after inactivity.

  • Requires PIN on next login.

 

February 10, 2026

Zitadel SSO Integration (Waterfall UK)

What's New: Waterfall UK is migrating from native Waterfall authentication to Zitadel Single Sign-On (SSO) for enhanced security and modern identity management.

User Impact:

  • Eligible Users: Active UK users with email addresses will be migrated (except some).

  • Migration Process:

    • Users will receive an invitation email from Zitadel to set up their new password.

    • On next login, users will be redirected to Zitadel authentication.

    • Users must set a new password and configure Multi-Factor Authentication (MFA).

    • If the invitation email is missed, users can use the "Forgot Password" flow.

  • Non-Migrated Accounts: Some accounts and users will remain on standard username/password login until their IDP integration is configured at a later date.

Benefits:

  • Self-service password management.

  • Enhanced security with mandatory MFA.

 

Custom Identity Provider (IDP) Integration via Zitadel

What's New: Enterprise customers can now integrate their corporate Identity Providers (IDP) through Zitadel, allowing users to authenticate with their company credentials.

User Impact:

  • For Enterprise Customers: Contact your CSM to configure corporate IDP integration in Zitadel (SAML/OAuth supported).

  • Login Experience: Once IDP is configured, users authenticate via their company's login system (e.g., Okta, Azure AD, Google Workspace).

  • Migration Timeline: IDP integration is optional and configured at customer's convenience.

  • Until IDP Setup: Users authenticate via standard Zitadel SSO (username/password + MFA).

Benefits:

  • Centralized identity management through corporate systems.

  • Compliance with corporate security policies.

  • Seamless single sign-on experience.

 

Admin App: Disable Standard Login

  • New option allows admins to disable username/password login, enforcing IDP-only authentication.

 

Bug Fixes

  • Fixed slow UI performance and fatal error issues.

  • Resolved impersonation revert functionality.

 

January 27, 2026

Zitadel SSO Integration (Waterfall US Only)

What's New: Waterfall US is migrating from native Waterfall authentication to Zitadel Single Sign-On (SSO) for enhanced security and modern identity management.

User Impact:

  • Eligible Users: Active US users with email addresses will be automatically migrated.

  • Migration Process:

    • Users will receive an invitation email from Zitadel to set up their new password.

    • On next login, users will be redirected to Zitadel authentication.

    • Users must set a new password and configure Multi-Factor Authentication (MFA).

    • If the invitation email is missed, users can use the "Forgot Password" flow.

Benefits:

  • Self-service password management.

  • Enhanced security with mandatory MFA.

For more information, see Initial Zitadel Setup (Available for US Customers) and Logging in to Waterfall with Zitadel (After Initial Setup) (Available for US Customers).