OST and PST files get corrupted with Microsoft office suite. Usually starts saying not enough memory or space to run your email. Corruption happens to the Ost files as well as PST files and they need to be reconfigured. Try Google Email for a more stable email and the safest email because the email is sent encrypted to another google email. But encrypted if send to another outlook mail.
Computers need to be cleaned up from unwanted programs and spyware programs. Unwanted visitors on your network is putting your data at risk. Clear off any unused icons on your desktop. Speed up your computer from not only unwanted programs but a possible virus, malware, and spyware. Maintenance that can really mess up your computer. We remove the unwanted spyware programs, virus and install a free antivirus software if you do not have windows 10. Upgrade your computer with adding memory sticks.