SimpleMind does not collect email addresses, nor does it collect any other information from you.

When you use the Save to Web command, SimpleMind Touch uploads the Mind Map data and optional image files to the SimpleMind server and nothing else (no email addresses, no user names, nothing else). Because the Mind Map is then stored on the SimpleMind server the SimpleMind administrator could theoretically access your Mind Maps. However it is strict company policy to never do this.
As a consequence, if you have uploaded Mind Maps to the SimpleMind server and have somehow lost the links to the uploaded files, the SimpleMind administrator will not help you restoring these links or Mind Map files.
If you have lost links to uploaded Mind Map files, you should again use Save to Web to get a fresh set of links.