Fix JMAP: Creating a MaskedEmail with emailDomain fails with forbidden for every domain when the account has addresses on more than one domain

CHANGELOG.md

@@ -11,6 +11,7 @@ If you are upgrading from v0.16.x, replace the binary (or run `docker pull`). If
 ## Changed
 
 ## Fixed
+- JMAP: Creating a `MaskedEmail` with `emailDomain` fails with `forbidden` for every domain when the account has addresses on more than one domain.
 
 ## [0.16.24] - 2026-09-27
 

crates/jmap/src/registry/mapping/masked_email.rs

@@ -79,7 +79,7 @@ pub(crate) async fn validate_masked_email(
                             account
                                 .addresses
                                 .iter()
-                                .all(|addr| addr.domain_id == domain.id)
+                                .any(|addr| addr.domain_id == domain.id)
                         })
                         .is_some()
                     {