Oh thank you! I really wish Thunderbird would support EAS/MAPI over HTTP/EWS. They're so widely used and it's irritating to have to use the memory hog that is Evolution.
Are you sure? I'll grant you neither are particularly small but on this laptop a TB with no accounts set up uses more memory than the various Evo processes with several Exchange mailboxes open. Nothing scientific but a quick look at memory % in "glances".
As an aside, if using IMAP for the exchange account (as @shmerl suggests) doesn't work for you, you might have better luck with DavMail [1]. I've used it in the past before my workplace enabled IMAP access for exchange mailboxes.
