How do i unsend email in outlook without losing anything?

for classic outlook there's a workaround that beats recall: a rule that holds every outgoing mail for a couple of minutes. File > Manage Rules & Alerts > New Rule > apply rule on messages I send, then the action is defer delivery by a number of minutes. emails sit in the outbox for that long, so you can open one and fix it or delete it before it goes. works no matter who you're sending to. the only catch is outlook has to stay open until they've gone out.

Which Outlook are you on? It matters a lot here. Outlook.com and the new Outlook app have Undo send. Turn it on under Settings > Mail > Compose and reply and set the delay (max is 10 seconds). After that the window has passed. Classic desktop Outlook has Recall: open the email from Sent Items, then the recall option under the message actions. It only works if you and the recipient are on the same work/school Microsoft 365 or Exchange setup, and not reliably once they've opened it. To a gmail address it won't work at all. Neither one deletes your copy, the original stays in Sent Items.