With srcport notes you can drop yourself notes privately to your account without logging in. Using only your email address and PIN, you can leave yourself notes to read later. Srcport notes supports Markdown and Mermaid diagrams.
Note titles and folders are viewable with a PIN but the contents of the note can only be viewed by logging in to your srcport account. Alternatively, if you make a note public, it will be displayed as a page on srcport.com.