I need an e-mail client, such as ThunderBird, but with sync option.
By syncing, I mean syncing everything, such as read/unread mails, tags, tagged conversations, sent mails etc.
I have a desktop computer, let's call it D, and a notebook, let's call it L.
In D, I have carefully tagged each of my mails with 5 different tags. However, in L, I need to create and manage tags one more.
I have sent a mail using D, and in L, the mail is not in Sent folder.
To sum up, I need a mail client that is able to sync everything, just like web browsers, both for Linux and Windows OS.