1-- empty_body_guard.lua
 2-- Warns before sending an email with an empty body.
 3
 4local matcha = require("matcha")
 5
 6matcha.on("composer_updated", function(state)
 7    if state.body_len == 0 and state.to ~= "" then
 8        matcha.set_status("composer", "Email body is empty")
 9    end
10end)