Recover Draft Emails from Deleted Account

I have a Samsung Galaxy S5 phone and use the native, built-in email app for two corporate/ActiveSync accounts. Recently something went wrong with the settings of one of the accounts, which caused my contacts to disappear. Removing the account and adding it back fixed that issue. Since the account syncs to the server (Outlook 365), I didn't think there would be any loss taking this approach. I was wrong. Evidently draft emails are not synced, and I lost several very important ones. I am desperately trying to find a way to recover the contents of these draft emails that disappeared. On the recommendation of a friend, I tried using a full-text search program (Astrogrep) to search the phone while connected to my computer, but the program wouldn't allow me to search the phone folders. I also tried using the Wondershare Dr. Fone DataRecovery program to recover messages, but this just keeps getting stuck at 99% during the scanning process (stayed there at least 30 minutes before I backed out) and doesn't bring any results. I've read in a few places that these emails might be stored in an SQLite database, but I'm not sure how to browse, search, or access this. I'm grasping at straws at this point, hoping there is some way to find the old draft emails in a file or database of the phone. I'm probably "moderate" when it comes to being tech savvy...so by now I'm looking for some good advice and step-by-step instructions from anyone who might know 1) if these drafts could still be in the phone and 2) how I can locate them to access the content. Thanks to anyone who can help!