Variable preventEmailImportOnReadOnlyAccountPluginConst

Prevents Email/import operations on read-only accounts.

Read-Only Account Protection (RFC 8620 Section 2, RFC 8621 Section 4.8):

• Validates that the target account's isReadOnly property is false
• Read-only accounts cannot accept data modification operations
• Email/import creates new Email objects, which requires write access
• Attempting to import into a read-only account would fail with an accountReadOnly error

This validator catches the error client-side before making a server request, providing immediate feedback when attempting invalid operations on read-only accounts.

Common read-only scenarios:

• Shared mailboxes with read-only permissions
• Archive accounts
• Accounts in maintenance mode