Original message templates. Replace bracketed fields before sending.

Correction: [event] is at [correct time and date]. Please use this time; my earlier message was wrong.

That message was intended for someone else. Please disregard it and delete any attachment.

Please do not forward the previous message. It included information sent by mistake.

To confirm, the final [detail] is [correct detail]. Please ignore earlier versions.

These requests do not prove that a recipient deleted, forgot, or never saw a message.