|count |messages |Number of messages of type `messages_type` that occurred during a particular `day_segment`.
|distinctcontacts |contacts |Number of distinct contacts that are associated with a particular `messages_type` during a particular `day_segment`.
|timefirstmessages |minutes |Number of minutes between 12:00am (midnight) and the first `message` of a particular `messages_type` during a particular `day_segment`.
|timelastmessages |minutes |Number of minutes between 12:00am (midnight) and the last `message` of a particular `messages_type` during a particular `day_segment`.
|countmostfrequentcontact |messages |Number of messages from the contact with the most messages of `messages_type` during a `day_segment` throughout the whole dataset of each participant.
!!! note "Assumptions/Observations"
1.`[MESSAGES_TYPES]` and `[FEATURES]` keys in `config.yaml` need to match. For example, `[MESSAGES_TYPES]``sent` matches the `[FEATURES]` key `sent`