Sync Newest Messages First

When Postler syncs for the very first time, it can take a while before the client is actually usable due to the sync order. In order to work around mbsync's method of syncing the oldest messages first, on Postler's first sync there should be a loop that goes something like this:

MaxMessages = n
n = 1
while there are unsynced messages on the server {
sync
n = n + 10
}
n = 0

We would use the "MaxMessages" option in the mbsyncrc file to accomplish this. We would need to know the number of messages on the server so that once that number was reached, we could set "MaxMessages" back to 0 (unlimited). We would also need to run the sync again and again in quick succession until that was reached, at which point it could go back to the standard 10 minute interval.

This should be a decent work around that will make Postler usable more quickly and then revert to the previous behavior once it is no longer necessary.