I want to move my email from a somewhat unreliable provider (let's say X) to Gmail. Unfortunately email provider doesn't allow folder export or direct IMAP link.
The only thing I can do is connect Gmail to X via POP3, so that anything in X's inbox gets copied to Gmail.
This I have set up, and it works, but of course POP3 only scans inbox.
I have thousands of emails in other folders than inbox, so I need to move them to inbox first. However, I can only move messages via X's web GUI, which only allows moving one page of messages per turn.
So I have to open Saved messages folder, click on "Select all", select "inbox" and click on "Move", then the page will reload and I need to do this again... hundreds of times.
I made a Javascript function (assume MoveToInbox()) which simulates these actions, and I opened page in Firefox and started Firefox Scratchpad. So, I can keep pressing Ctrl+R in Scratchpad, then wait for page reload, then press it again, which saves about 50% of time.
However, I am wondering, if I can somehow make Scratchpad work with that tab so that it waits for page reload, then executes script then waits again, eliminating all the manual repetitive tasks.
I thought I could somehow do it with window.addEventListener, but this object seems to get cleared on page reload, so is there something I could use instead?