Is it impolite to not reply back during the weekend? When someone writes to me while I am online during the weekend (a student or a colleague), is it impolite to not reply back, especially when they can see that I am online (on Mattermost for example or on any other app ...), although I reply back first thing Monday morning?
Edit: First of all, thank you all for your answers! :) I would like to clarify something: Even if I am working on the weekend, would you still say that it's not impolite to not reply back?
Edit edit: Since it was pointed out in a recent answer that this might depend on the location of the university, for me it's in France, but I guess (?) it would be more or less the same around Europe, though outside Europe, there seem to be other etiquettes..
No it’s not rude, it’s called boundaries and you are allowed to have them. Simply because you are online and doing something else does not entitle anyone else to your response. There’s some nuance to this though, depending on your relationship to the person emailing, but boundaries can and should be established.