1-- self_email_warn.lua
 2-- Notifies you when you receive an email you sent to yourself.
 3
 4local matcha = require("matcha")
 5
 6matcha.on("email_received", function(email)
 7    for i = 1, #email.to do
 8        if email.to[i] == email.from then
 9            matcha.notify("Self-email: " .. email.subject, 2)
10            return
11        end
12    end
13end)