The key question is here who should make this happen. Is it the reader of these emails or is it the sender of these emails.
My take: When you setup the account and agree to receive these notifications then you should have the option to set the emails to destruct and have the ability to choose the period you want to keep them. Blog software can have a default option for these notifications to just expire and delete.
Network Solutions Email has the ability to set your outgoing email to expire in minutes, hours or days.
Some interesting thoughts and discussions in these posts :
ThinkAbdul.com and on WebmasterWorld.
Disclaimer: This blog reflects my personal views only. AI tools may have been used for research support. This content does not represent the views of my employer, Info-Tech Research Group.