I've successfully created a few emails written in leetspeak or using short 3-number keys or 3-letter abbreviations converted to some type of base X system and n

I've successfully created a few emails written in leetspeak or using short 3-number keys or 3-letter abbreviations converted to some type of base X system and never have problems with them. I rarely, if ever, receive junk mail, and humans definitely have a lesser chance of using them.