Rules in an email app enable incoming messages to be dealt with automatically. You can boost productivity by automating the task. This can be done manually, but it is slow and time consuming when you receive a lot of email each day. It is an organizational feature and all your emails from a certain company, such as your place of work, a client or customer, can have the same label or be kept together in a folder. It can be useful to apply flags or labels to email messages, or to move them to folders if your email service allows them. Yahoo does! Let’s create rules in Yahoo Mail to sort emails.
Mail rules enable you to deal with incoming emails automatically, but Google, Microsoft and Apple phone apps don’t support them.