Time Machine Apple Mail backup missing
I installed El Capitan on my MacBook Pro some time ago and run Time Machine backups periodically.
I am trying to restore a couple of specific e-mails from a few months ago that I mistakenly deleted.
When I go to Apple Mail and enter Time Machine, I have all of the e-mails from my back ups prior to the El Capitan upgrade, but no backups since then. When I choose a back up date, Time Machine does not let me in (It will do so for my folders. Just Apple mail seems to have this problem.) Even the automatic Time Machine backups made of the last few days and stored on the MacBook do not contain any e-mails. In these cases, Time Machine lets me in and shows the Mailbox structure, but shows no e-mails.
All of my mails without exception are stored on my MacBook. I always close all programs including Mail prior to performing a Time Machine backup. I have also checked the V3 folder, and the correct files seem to be there.
MacBook Pro