API updates for August 2026

[Rowan Merewood]

Hello testers,

We have a new post out on the latest batch of changes:

https://developer.chrome.com/blog/email-verification-august-2026

To summarise:

- User-facing updates

- - Any email address can trigger verification, not just autofill / autocomplete

- - A progress indicator appears in the email field while an address is verified

- - API is desktop-only, but we're exploring Android support

- Verifier updates

- - Ensure you're validating the token as SD-JWT format. It does not currently contain any optional disclosures, but do not hardcode that assumption. Prefer libraries for parsing and validation.

- - Third-party origin trials are not supported, but let us know if you have a need for one

- - Email comparison in the token should be case-insensitive

- Provider updates

- - Breaking change in Chrome 153, the issuance request format is changing to use HTTP Message Signatures

Thank you for all your feedback so far, it's helped drive a lot of these changes. Please continue reporting issues with:

- the Chrome implementation: https://issues.chromium.org/u/1/issues/new?component=2129277&template=0

- the web API: https://github.com/WICG/email-verification/issues

- the overall protocol: https://github.com/dickhardt/email-verification/issues