How to set up mail filters, an auto-responder and block lists

How-to Email sievefiltersautorespondervacationblocklist

Create filters and an out-of-office reply from fixed options; the panel writes and compiles the Sieve script for you.

You never write Sieve: you choose from fixed options and the panel generates the script and checks it before publishing.

Steps

1. Open Email, Filters and select the mailbox.
2. Add a filter by choosing from the available rules; the panel writes the script.
3. To set an auto-responder, give the reply text and, if you want one, the dates. The panel always limits repeat replies to the same sender.
4. Add addresses to the block list or allow list.
5. Save. A script that does not compile is rejected and cannot affect delivery for other mailboxes.

Limits

• Forwarding from filters is capped per mailbox, because free-form forwarding could turn a mailbox into a spam relay.
• The rule set is closed on purpose.

Last updated: 2026-10-10