1-- auto_bcc.lua
 2-- Automatically adds a BCC address to every email you compose.
 3-- Change the address below to your own archive/backup address.
 4
 5local matcha = require("matcha")
 6
 7local bcc_address = "archive@example.com"
 8
 9matcha.on("composer_updated", function(state)
10    if state.bcc == "" then
11        matcha.set_compose_field("bcc", bcc_address)
12    end
13end)