Migrating to a new service: you can just update the webhook URL. On the other hand, there are at least a couple of problems with allowing even one redirect: it opens a pandora's box of security implications, and it's a performance penalty that is paid both by the sender and the receiver on every webhook sent. Realistically, 3xx are most likely to be a mis-configurations (e.g. including a trailing slash where one shouldn't) so I think being noisy about it is a great idea.
Not saying that there aren't valid use-cases (e.g. maybe some sort of dynamic webhook receiving), I'm just saying that we made this choice given the above, and we would be willing to change it if it's ever a barrier for someone.
Not saying that there aren't valid use-cases (e.g. maybe some sort of dynamic webhook receiving), I'm just saying that we made this choice given the above, and we would be willing to change it if it's ever a barrier for someone.