Otherwise I will action your email as soon as i can when i return.

Thank you for your message.
I am currently out the office until [date].
I will have limited access to my emails.
Should your message require urgent attention, please resend it to [substitute email].
Otherwise I will action your email as soon as i can when i return.

If you need to speak to me urgently please call [telephone number] or, alternatively, call the office on the numbers [substitute telephone number].

Best Regards,

[name and surname]