Why can’t I see my sent messages in LinkedIn?

Go here to view your message inbox. All messages sent to connections will be there, including your custom connection request if sent. If you don’t see your messages there then:

1. Check to see if it’s archived (messaging filter options)
2. It’s buried far down and you’re missing it (search for their name)
3. They’ve blocked you
4. It’s been permanently deleted

Those are the reasons I’ve encountered in my experience.

– Zeeko