Can we have an option to mark all messages in the account till now as historical thus skip scanning of them?

The Problem

It has been weeks, but seems it’s faithless for Mailspring to finish scanning my account’s mail boxes. I’d been leaving the main window open over nights, but no obvious progress at all.

There’re tens of thousands of historic messages there, and obviously Apple can be throttling the connection.

Proposed Solution

I just want an option from the client menu or somewhere, to tell Mailspring to skip scanning all those historic messages, and only process whatsoever come from then on.

Alternative Solutions

I thought mark all my mails as archived may help it, but I don’t want to do so unless absolutely necessary.

(Originally posted by complyue on GitHub.)