Posthumous messages can comfort or destabilize depending on content and timing. Legacy OS is built so delivery is rule-bound — not an accidental send from a draft folder.
Consider recipients: age, emotional readiness, and whether a message should wait for a milestone. Write with clarity; ambiguity ages poorly.
You can revise until you are ready
Most plans improve over multiple drafts. Treat the first version as a sketch, not a final inscription.