If only I could have kept the fantastic idea I had yesterday! Now I cannot remember the details!
Important notes are managed best with Notio.
With Notio you can create, import and manage notes. Notes can be plain text, but also be layouted with text styles and formatting.
Sort your notes in groups and subgroups hierarchically, e.g. in order to manage notes for various projects or topics. Therefore you can add keywords, color labels, a description, a comment and any number of attachments to your notes.
Notio manages all data of your notes in a central database and cares for saving all data immediately after you have changed them. All notes can be searched easily and comfortably in the database. You can also manage any files or web archives as resources for your notes and attachments. Imported notes can be identified and searched quickly by using the database category of the same name.
All delete actions are undoable until you finally delete elements from the trash, like you are used to in the macOS Finder.
Notio 2.01 has to be purchased by registered 1.x users, too.