Keepmark can store any files that are on your computer. Moreover, it previews many popular document formats, allowing you to view them without having to open them in a dedicated application.
Keepmark has support for spell checking when creating notes. To enable this functionality, you must first go to the app's settings and download the dictionaries of your choice.
Simplifying, Textpack is a markdown file, plus optional image files, packed into single zip file.
You will find a short guide how to get started with Keepmark in the attached video.
See attached video to see how to configure email account in Keepmark.
A link to the files for Windows/Linux/Mac will be sent immediately to the email address provided after submitting the form on the home page.
You will find a short guide how to configure workspace synchronization in the attached video.
Currently Keepmark has no support for OCR (recognizing text from image files). However, it is not excluded that this possibility will appear one day.