Twilio Changelog

At Twilio, we’re always working to make your messaging experience more reliable and transparent. That’s why we’re making some updates to how we handle Alphanumeric Sender IDs.

What’s Happening?

Starting on July 14, 2025, we’re introducing clearer error codes and new message status updates when an Alphanumeric Sender ID isn’t properly registered or authorized in a given country. These updates will help you quickly understand if something needs to be fixed and keep your messages flowing smoothly.

Here are the highlights:

• *New Error Codes

  • 30041: Sent when the Alphanumeric Sender ID isn’t registered or authorized for use.

  • 30042: Sent when the Alphanumeric Sender ID is explicitly blocked because it’s generic or not allowed to be used.

•  What Will Change in Your Logs?

  • Messages with unregistered Alpha Sender IDs will now appear as “Likely-SCAM” in the logs in Singapore and Ireland.

  • Error codes will be clearer and more actionable.

If your Alphanumeric Sender IDs are already registered and approved for your destinations, you’re all set—no action needed! If you see one of these new error codes, that’s your cue to double-check that your Alphanumeric Sender ID is properly set up for the country you’re sending to.

*Note: Error codes are subject to processing fees. For more information on charges on messaging errors, visit our Twilio Help Center article on error code fees.

For questions or help with registering your Alphanumeric Sender IDs visit:

• SMS Guidelines Page

• Twilio Help Center

We’ve extended the end-of-life (EOL) date for the legacy version of Flex Single Sign-On (SSO) from June 2025 to January 15, 2026. This extension comes directly in response to customer feedback and the momentum we’re seeing with migrations. Our goal is to give every team the time they need for a smooth, stress-free transition.

Here’s what customers need to do next: 

• Customers using legacy Flex SSO now have until January 15, 2026, to complete migration to the enhanced SSO.

• After this date, logins via the legacy flow will no longer be supported

Need a hand?

Here are some helpful resources to help customers migrate: 

• Enhanced and Legacy SSO Twilio documentation

• Flex SSO URL Migration Guide

As of June 16, 2025 the Legacy Boku Identity APIs Infrastructure in Indonesia will be migrated.

We would like to inform you about upcoming changes to Legacy Boku Identity API’s production infrastructure in Indonesia. These changes will not impact your current service. Our goal is to minimize impact to your current integration to our services. These updates are part of our ongoing commitment to improving performance, scalability, and reliability for all our customers.

If you have whitelisted or hardcorded our IP addresses instead of URLs, please make a note of our new IP addresses. These new IP addresses will take effect once we perform the switchover to AWS cloud services.

Our support team is available to assist you with any questions or concerns at accsec-onboarding@twilio.com.

Thank you for choosing Twilio. We appreciate your partnership and look forward to continuing to provide you with exceptional service.

We’re excited to announce that Flex UI 2.13.0 is now available. This release includes:

• The option to turn on a default Flex ringtone for incoming tasks and the ability to configure different sounds based on task channel using the new SoundManager API.

• Spell-check functionality in the email editor.

Throughout Flex UI, you'll find feature and UI enhancements, bug fixes, and more.

For complete details, see the Flex UI release notes for 2.13.0.

Ahoy!

​​On May 8, 2025, Twilio sent an advisory to some customers outlining an upcoming change to the Twilio Verify V1/Authy API endpoints. This change, initially planned for June 16, 2025, would stop accepting GET requests that include a request body. The goal is to enhance security and better protect against smuggling attacks.

To ensure a smooth transition and give customers more time to update their integrations, Twilio is extending the deadline for this change to January 15, 2026.

What customers need to do:

• Update any GET requests that include a request body to either remove the body or use the correct HTTP method (such as POST).

• If third-party integrations are involved, confirm with those providers to ensure they are aware of and preparing for this change.

Thank you for building with Twilio! 

–Team Twilio

Twilio has officially ended support for TLS 1.0 and TLS 1.1 protocols on Elastic SIP Trunking and Programmable Voice SIP interfaces.

Starting November 10, 2025, Twilio will no longer support Node.js v18 in Functions and Assets. This change aligns with the official Node.js community deprecation timeline.

What does this mean?

• Existing Functions and Assets using Node.js v18 will continue to run as long as they are not modified.

• Any new deployments or edits to Functions after November 10, 2025, must use Node.js v22.

• Deployments using Node.js v18 after this date will fail.

• New builds by Classic users will automatically default to Node.js v22. 

What action is required?

To ensure continued functionality, we recommend that you:

1. Test and re-deploy your Functions using Node.js v22 before November 10, 2025.

2. Verify that your dependencies are compatible with Node.js v22.

3. Explicitly set the Node.js runtime to v22 via one of the following methods:

   • In Twilio Console: Select v22 in the Dependencies tab list

   • Via Serverless Toolkit: Set the runtime parameter

   • During build creation: Use the runtime configuration setting

Need a hand?

Refer to our Node.js v22 migration guide for step-by-step instructions and tips to help ensure a smooth transition.

Twilio SendGrid will be retiring its Free Email API and Free Marketing Campaigns plan starting May 27, 2025. Customers will continue to have full access to the Free Plan– including sending limits and features– for the next 60 days. After that, an upgrade to a paid plan will be required to continue sending email and accessing key tools.

What’s Changing?

After the 60-day transition period:

• Email sending will be paused for accounts on all free plans

• Marketing Campaign features, like templates, contact list management, and automation will no longer be available

• Contacts stored over the 100-contact limit will be deleted and cannot be restored if a customer upgrades after the transition period ends

These changes do not impact any paid SendGrid plans– those will continue as usual.

Customers can explore available plans by visiting their SendGrid Dashboard and going to Settings > Account Details > Your Products.

For customers who need more time to decide on their Marketing Campaigns plan, contact data can be exported before the transition period ends. Instructions can be found in the SendGrid contact export documentation.

Continuing the Journey

Whether customers are just getting started or scaling up quickly, Twilio SendGrid is committed to supporting them with the same trusted delivery, tools, and service they’ve come to rely on.

Thanks to all the builders and senders in our community. We’re excited to continue the journey–together.