Deep-link availability
This build does not register a public primail:// URL for
opening mail from a browser, Notes, or a task list.
What to use instead
Section titled “What to use instead”- Open a mailbox or folder from the sidebar.
- Search with ⌘F.
- Compose with C or ⌘N.
- Jump to Settings → Accounts or Support from the Settings sheet or the matching app-menu items.
A notification click can focus the related message while Primail is running.
mailto: handling is a separate OS default-app limit. See
Default mail app status.