I got two fix-it emails 8 months ago. One was to add my flight schools that I attended in college the other was to fix my flight history on my application...it's been crickets since which is a bad sign. The trend it seems is if you're going to get an invite after the fix-it email is it happens a few days to weeks after. I'm not giving up on Delta cause it's really where I want to be. I've had aerocrew go through my app with me and multiple other dudes from my squadron. I update often and continue to build my resume in hopes of receiving the interview invite.