If you add alarms, then you also should show an alert window (a list of all notes due today or overdue).

The user should see the notes title, the due date and also some colors (one color for due today and an other color for overdue.

In the alert window a double click on a note opens the note in the note editor.

The user also can select one ore multiple notes (using [CTRL] or [SHIFT]) and select the following options from combo boxes.

Combo box Set new due:

• set due to tomorrow
• set due +2 days
• set due +2 days
• set due +1 week
• set due +2 week
• set due +1 month

Here the user can change the due date (so the note disappears from the alert window).

Combo box Set new reminder:

• remind me in 5 minutes
• remind me in 10 minutes
• remind me in 20 minutes
• remind me in 30 minutes
• remind me in 1 hour
• remind me in 2 hours

So the user can set an new reminder, but the original due date is not changed.
Also here the note disappears from the reminder.

Maybe some other user have additional ideas.

Links (URLs) are recognized and highlighted inside the note text (if a note is opened by double clicking on it), in the notes list the URLs are not highlighted.

I suggest that you add an option, where the user can select:
- if notes should be highlighted in the notes editor (yes or no)
- if notes should be highlighted in the notes list (yes or no)