No standard way to inform the sender of a new address, AFAIK.
You can set up a forward to your new email, and keep the old address active and forwarding messages until you're satisfied you've updated (or canceled) all the uses of your old address.
Then maybe start bouncing messages for a period of time before you finally shut down your domain.
You can set up a forward to your new email, and keep the old address active and forwarding messages until you're satisfied you've updated (or canceled) all the uses of your old address.
Then maybe start bouncing messages for a period of time before you finally shut down your domain.