How do I retrieve my admin username and password?

The default username/password is admin/password, so try this first.

The username and password is stored in an SQL Lite database. There's a couple of easy ways to retrieve them from the database.

Database: (mwes.db)
Windows: C:\Program Files\MailWasher Enterprise Server\data
Linux: \opt\mwes

1. Get the free http://www.sqliteexpert.com/download.html and navigate to the configure table.

2. Install the Firefox SQL lite browser: https://addons.mozilla.org/en-US/firefox/addon/5817

Navigate to the installed program directory and locate mwes.db (you might need to 'Show all Files' when browsing), then navigate to the configure table >> name, and locate the username and password fields.