Problem.

Few months ago, I archive few message and threads which were finished long time ago.

Few days ago, I received message from my team to reply one of our client but I can't find any email in my Inbox.

Later I found that thread was archived and doesn't show up in Inbox & Sent Folder.

One of Solution is that you can find an archive email in All Mails Folder, but they are sorted according to their dates and you have to find them.

Solution.

Write in Query Gmail Search Area.

-in:Sent -in:Draft -in:Inbox has:nouserlabels