You’re probably not exposed to the big internet. But that’s no excuse for poor security. I’d look up a hardening guide for your operating system.

You should also look up hardening guides for any applications you plan to run, and follow simple security measures like not logging in as root/admin, strong passwords, 2FA.

Not to say you’re at risk, but its good practice to make secure your default. Doing this will help you understand the basics of system security and the risks that systems have.

Might be janky, but if you really wanted this for free you could get a speech to text program like futo, play the video and have it transcribe it and save it to a text file, then copy and paste in the subtitles

I would have a failsafe, like use a major email provider for emails that you need to go through for like work order government stuff.

Hosting your own email is a great learning experience and is fun to do; but your emails will get marked as spam, you’ll have to constantly perform maintenance, and have major reliability issues.

Most of the issues youll have are fine for personal use, but is dicey if you plan to migrate 100%

Edit: receiving email is less of an issue of sending. The forwarder should be reliable, however, its the sending from the forwarding address that would possibly be an issue.