Answer customer questions, acknowledge tickets, escalate exceptions. Every one is ready to run, and you can adjust it in plain language.
Reply to matter email and alert the backup to deadlines before return.
Your senders hear back while you're away, and your backup sees requests that need attention before you return.
Draft cautious client replies from the full matter exchange.
Get a reply draft in the original email conversation when you're unsure what to say, with the earlier exchange taken into account.