No. Tugboat previews are intended to be short-lived, and do not come with the stability or support guarantees needed to host a production application.
No. Direct SSH access to a Preview is not possible. However, shell access is provided in both the web interface and the command line tool.
Tugboat makes a best effort to capture outbound email. Using the local
sendmail or the SMTP server at $TUGBOAT_SMTP will result in email being
captured by Tugboat. These captured emails are only saved for as long as the
Preview that sent them exists.
Tugboat does not attempt to capture any other outbound SMTP server connections, so if you are concerned with sending emails to customers from a QA environment, be sure to update your application configuration to use Tugboat’s SMTP server.
For more details, see: Inside a Preview -> Captured Mail.