Debt etiquette, in collaboration with Facebook, has developed a digital messaging directory, which includes messaging rules via group chats or single chat groups.

The guide, created with research in Facebook Messenger, advises you not to send messages from a single word or emoji to friends, because that suggests busy, that the other person's conversation doesn't matter or you're not interested in talking.

You should also avoid sending multiple messages (four or five) at once and send ideas in one message instead.

The guide states that in group chat, you should stay away from sending multiple messages at a time because this suggests tyranny and can be confusing to other members who don't read messages at the same time.

Someone is likely to leave their phones unattended for a few minutes, which will make communication more complicated.

Other mistakes we may make include gossiping, as the company encourages people not to "broadcast private information to other people in a group chat" because this may make the person we're talking about exposed to everyone.

The study also recommends that the company should respond to the talks and not leave them suspended.

As for waiting for a reply, at least one day is acceptable unless the letter is urgent.