The email templates are all defined in qa-lang-emails.php so you can follow the instructions about using custom phrases to change them however you like.
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask here, in English.
To report a bug, please create a new issue on Github or ask a question here with the bug tag.
If you just want to try Q2A, please use the demo site.