Discuss and learn French: French vocabulary, French grammar, French culture etc.
I think postpone is if we have a meeting today and you can't come, so you call to suggest another date in the future.
are repousser and reporter interchangeable?
for a meeting or a visit, yes.
"renvoyer" for postpone is often use for a trial, but the idea is not just postpone, it's "add something more : time, informations, witness, judge, ...." it's not used in another way for postpone.
"remettre" is not exactly postpone. We have a meeting today, and it's was nice and I suggest to do the same meeting the next week.