How to Set an Out-of-Office Auto-Reply for Business Email

An out-of-office reply keeps customers from feeling ignored while you are away, but a careless one tells every spammer that the mailbox is live and every stranger that your office is empty. Here is how to switch one on in the common mail apps, what to write, and the details to leave out.

Quick summary

• Webmail: most providers put it under Settings, then Vacation, Auto-reply or Out of Office. Set it on the server, not in a desktop app, so it works while your laptop is closed.
• Outlook desktop: File, Automatic Replies, then separate texts for inside and outside your organisation.
• Apple Mail: there is no server-side responder; use your provider's webmail instead.
• Thunderbird: only via a filter with "Reply with template", which requires Thunderbird to be running. Prefer the server-side option.
• Gmail app on a business mailbox routed through IMAP: not possible from the app; set it on the host's webmail.

Where the setting lives

• Webmail: most providers put it under Settings, then Vacation, Auto-reply or Out of Office. Set it on the server, not in a desktop app, so it works while your laptop is closed.
• Outlook desktop: File, Automatic Replies, then separate texts for inside and outside your organisation.
• Apple Mail: there is no server-side responder; use your provider's webmail instead.
• Thunderbird: only via a filter with "Reply with template", which requires Thunderbird to be running. Prefer the server-side option.
• Gmail app on a business mailbox routed through IMAP: not possible from the app; set it on the host's webmail.

What a good business auto-reply contains

1. The date you are back, not the date you left. "I return on Monday 24 August" is more useful than "I am away from 17 August".
2. Who to contact for urgent matters, with a role address like support@yourcompany.com rather than a colleague's personal mobile.
3. Whether you will read mail while away. If not, say so; people then re-send on your return instead of waiting.
4. Your normal signature, so the reply looks like it came from a business and not an abandoned account.

What to leave out

• Your travel destination or that the office is closed. It is a security detail nobody outside needs.
• Personal phone numbers of colleagues. Use role addresses or your main office line.
• Confidential client names or project details.
• Long apologies. Two or three sentences is plenty.

Example you can copy

Subject: Out of office until Monday 24 August

Thank you for your email. I am out of the office and will reply when I return on Monday 24 August.

For anything urgent, please contact our team at support@yourcompany.com or call +1 555 0100 during office hours.

Kind regards,
Jane Smith
Operations, Yourcompany Ltd

Settings that stop the auto-reply causing trouble

• Reply once per sender. Most responders remember who they already answered for a few days; make sure that option is on so a busy thread does not get twenty copies.
• Do not reply to mailing lists or bulk mail. Good responders skip messages with a List-Id or Precedence: bulk header; if yours does not, restrict replies to your contacts or to your own domain.
• Set an end date so it switches off by itself. A forgotten auto-reply in March that mentions the December holidays is a common embarrassment.
• Send the test from an outside account. Some responders never reply to your own domain, so testing from a colleague's address can give a false negative.

Role addresses make auto-replies simpler

If customers write to support@ or sales@ rather than to individuals, one person's holiday does not need an auto-reply at all; a teammate simply keeps answering. That is one reason to give your business its own role mailboxes early. OquMail's free plan includes up to 15 mailboxes on your domain with webmail, so support@ can be a real shared inbox rather than an address that goes quiet when one person is away.

Common questions

Should I set an auto-reply for a weekend or one day off?

Usually not. Customers expect a business-day reply anyway. Reserve auto-replies for absences of two working days or more, or for situations where a customer would otherwise expect a same-day answer.

Do auto-replies cause spam problems?

They can if they go to forged senders; spammers spoof addresses, and your responder then sends unsolicited mail to an innocent third party. Limiting replies to one per sender and skipping bulk mail keeps this negligible. Your own SPF, DKIM and DMARC records still apply to auto-replies, so keep them correct.

Can I set a different message for customers and colleagues?

Outlook and some webmail systems allow separate internal and external messages. If yours does not, write the external version and share your real whereabouts with colleagues by chat or calendar instead.