TL:DR; Scramble and kill files irreversibly with no chance to recover.
Scramble and kill files irreversibly with no chance to recover. Secure file destroyment with explorer extension. Make em dead. No recovery or hard disk program can restore them. Freeware!
PHOTORECOVERY 2014 is an easy-to-use application that recovers images, movies, sound files and other popular file types from all types of digital media. The PRO version includes Digital Media Doctor, a utility for testing & benchmarking memory cards.
MBOX to PST Converter is very smart conversion to convert to MBOX to PST files format. The tool Convert MBOX files of Thunderbird, Apple Mail, Mac Mail to PST in short time. Convert MBOX to PST with attachments, formatting, meta data.
CleanMyPhone for Mac is a simple and powerful application that will help you to keep your iPhone, iPad clean and running smoothly. It includes useful tools such as Disk Manager, System Cleanup, App Cleaner, Find Large Files, One-Click-Copy and more.