To configure go to the $XDG base directory folder path (MacOS: /Users/$USER/Library/Preferences/rs.LK.LK/LK.toml, Linux: home/#USER/.config/LK) and adjust the configuration file to the services you want to be sent a message to (supports email, MatterMost, and Twilio at the current time).
Once done make sure your config file is set to 600 or rw--- so you are the only one able to see and edit the file with passwords, and API tokens!!
Right now lk supports sending messages via Twilio API, Email, MatterMost API, or System notifications. Have any more suggestions, put in an issue or PR!