Thanks for your email. I will be away from the office until September 13th and will respond as soon as I can.
2.) Bienvenido/a John Doe. Por vacaciones de empresa nuestros no volveremos a estar disponibles hasta el lunes día 4 de julio de 2016. El envío de los pedidos se reanudará el 1 de noviembre de 2016. Mientras tanto nos puede enviar sus peticiones por correo electrónico [email protected] o a través de nuestro formulario de contacto. ¡Muchas gracias! de Berlín están cerradas por vacaciones. Puede contactar con nosotros de lunes a viernes de 9:00h a 12:00h y de 13:00h a 18:00h. Para cuestiones generales también puede enviarnos un coreo electrónico a [email protected]. Muchas gracias. Le deseamos que tenga un buen día. Su empresa John Doe AG.

I might sound nitpicky but the language is important. “Might” or “may be” or “slower than usual” are vague and don’t offer the sender all that much information about when you’re really going to respond to them. Worse, they do a horrible job of protecting the time of the email receiver who, as the responder notes, is not in the office! Such a responder implies that, not only will the vacationer reply to the email, but they may not even miss a beat. They may be slow to respond, but they also might not.
The reason I did it was that the first time I took maternity leave, I came back to thousands of irrelevant emails. It was a chore to sort through them, and finding the ones that were still relevant was like finding a needle in a haystack. And it wasn’t just a waste of *my* time – I often had to reach out to email senders only to hear that no further action was needed, so I was wasting their time too.