You can add or update the translation in your language. You can visit http://code.google.com/p/wordpress-mailpress to look for the most updated language files and to join the translation group.
Join to the translators. Terms and steps:
1. You need to create an account, or if you have one, you need to sign in:
Account creation here:
2. Send me an e-mail to the firstname.lastname@example.org adress.
The subject of the letter: MailPress?
Describe in the letter what is the google account name (which he entered in the Section 1.)
Also, what kind of developer is. For example (English, Russian language translator)
I look forward to the plugin maker and administrator can also apply.
The translators, delete, edit, upload right to receive.