All of your local drafts, downloaded posts, and other blogging data used within the app are stored in a folder located within your home folder. From time to time you may want to access this data either to backup or restore the content, to add custom scripts or text filters to MarsEdit, or to carefully hand-edit a configuration file.
To easily access the MarsEdit data folder on your Mac:
Do not edit the contents of your MarsEdit data folder without making a backup of the entire folder so that you can restore it if needed.