Triggers when a mailbox gets a new email. Don't forget to set up your parser mailboxes at

Increment a value at a defined key.

Push a value onto a list of values.

Remove one or more child values stored at a defined key.

Set one or more child values stored at a defined key.

Pop a value off a list of values, removing the value from the list. Optionally, return a default value if the list is empty.

Remove a value stored at a defined key. Also works if the value is a list.

Set multiple values stored at a defined keys.