Message Id's are known to change on move/copy/etc... But are they ever repeated?

Question

Lets say I run the request GET https://graph.microsoft.com/v1.0/me/messages

I get back a list of Message objects. According to the documentation here

id (string) - Unique identifier for the message (note that this value may change if a message is moved or altered)

However, is this id ever repeated? Currently I am making a scheduling plugin that saves some message draft id to a database before attempting to send it at some specified later date

I know that if the message is moved or altered that the id will no longer be valid. But would it ever accidently point to a new (but different) message?

In other words, are the ids every reused?

Answer 1

The ID property is a compound value which, among other things, includes the message's path and it's unique identifier. This is why the ID will change when a message is moved to another folder but still maintain a unique value.

Answer 2

No. Ids are never repeated as far as I can say.