I strongly have to insist that when sharing credentials/passwords you should be using a service like a secrets manager or password manager, ideally you'll use my service https://pkhub.io :)
This quick share mechanism is made for that time when you are about to send a password over slack and delete it afterwards. You know its wrong but its just so convenient :/
With https://pkhub.io/securesend you can send it, have a optional passcode and the message expires either on read or after the expire time set.
The advantage is the message is not somewhere in a text transcript that can be harvested, and is deleted permanently after expire. Its also stored encrypted where only the link holder can decrypt the message.
The link will be available for harvest if you send it over email or slack but the temporality of the message solves this i.e the link becomes useless after the message expires.