There is no way to edit a sent newsletter. It's just like email, once it's sent, it is a done deal. There is no way to change what was sent and delivered to your subscribers' inboxes.

If it's an important oversight, we recommend that you send a follow-up newsletter with the correct info and even a short apology.  Hey, we all make mistakes!

You can even title your follow-up, revised newsletter with a title that indicates immediately that you are making a correction, something like:

• oops, correction
• oops, correct date of Reception is --------------
• oops, spoke too soon

Also see:
Remove or Add a Newsletter to the Newsletter Archive

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