Changing emails content

Troubleshooting
1

Where do I change emails content?

I changed the i18n string like api.templates.email_footer. but it does not seem to work
any other place?

Much thnx

2

This documentation might help: Email Templates — Mattermost documentation.

3

I did edit those, but changes did not happen, i am unclear if i need to restart mattermost, or re initialize config.