Of course, managing a minute and a half response time isn’t so easily accomplished when you’re out of office, receiving hundreds of texts each hour, or shifting your attention to a different project.
If you are unavailable and a client needs contact, a colleague’s contact information can be included. The text should also indicate when it’s appropriate to contact the alternate. Some people will indicate that the contact is for urgent matters while others may offer for consistent client care.

As 2020 winds down, lots of people (us included) will be out of the office celebrating the holidays with family and friends. Here are some really funny, clever and snarky out-of-office messages sent this year, courtesy of HubSpot Blogs (full article here).
we had something similar at one phone-heavy place I used to work and it was actually extremely useful – everyone set their voicemail when they got in, and people would include if they were offsite (so worth ringing their mobile) or likely to be otherwise unreachable, and who to contact if your query was urgent. only took a minute to set, and was super useful to me as someone who had to talk to maybe 10-20 people on the phone in a day.