For message template files you can just send it to me at joe dot audette at g mail dotcom.
If you want to translate pt-PT .resx files, I can setup an account for you to translate using the Amanuens service, then your work on translating resource files will sync with our source code repository every morning.
Let me know in your email if you would like to help with this and include your first and last name in the email so I can use that when I create the account for you at Amanuens.
Best,
Joe