The following words are designed to be triggers for Post Comments, Live Comments, direct messages (could be random, or coming from a podcast/stage/YouTube/etc.), and Story Replies.
They have been tested across thousands of posts, with 100M+ user opt-ins. These words will get you the most opt-ins, because they follow this SWEET framework:
S - Seven letters max, ideally
W - Word, not phrase
E - Easy to spell
E - Exact word related to your business
T - To make it speedy for users, avoid special symbols and emojis