What standard IMAP/SMTP enables
The local product can connect to Hostinger or another compatible provider, browse folders, search messages, read attachments and prepare SMTP delivery.
What the hosted beta supports today
For a narrower production boundary, the current hosted beta accepts only approved Hostinger TLS endpoints. Broader providers are not advertised as hosted integrations yet.
Mailbox switching is not multi-account support
The current release keeps one active credential set. Connecting a different mailbox switches the active account and does not create a combined inbox or team credential vault.