Confer

You attempt to establish a telepathic link with a creature with which you are familiar. The creature hears the message in its mind and can see an illusion of you if it wishes to. The spell enables you to converse and talk to each other telepathically for the duration.. The spell enables creatures with Intelligence scores of at least 1 to understand the meaning of your message.

You can send the message across any distance and even to other planes of existence, but if the target is on a different plane than you, the duration is shortened to 1 minute.