Bot Direct Message Rate Limits/Quarantine

Hello,
A few years ago I was working on a bot, and eventually decided I wanted to give all of its users a brief update about the bot so I tried sending each of them a DM at the same time. This resulted in my bot getting indefinitely quarantined.

Now, I'm trying to use Discord as a notification system for a WebApp I've built, and I'm wondering if there is any way to determine what that quarantine/rate limit might look like? I can't seem to find any information online, but I really don't want my bot to get quarantined again.

How do some of the bigger/well established bots that DM you not get quarantined? Like the ones that DM you every time you join a server or whatnot?
Was this page helpful?