Questions about Switching to Apple Mail clinet and Tuta

Questions
1

Hi everyone!

I’m switching from Proton to Tuta and from Linux to macOS. I used to make monthly email backups with Thunderbird on Linux.

Since I find Thunderbird lacking, I’m considering the Apple Mail client for importing .mbox and .eml files for easier searching and reading.

I have a couple of questions:

  1. What does Apple collect when using the Apple Mail client with only local emails (no iCloud)? I’m wondering if it’s worth switching from Thunderbird if there are any privacy downsides.

  2. How is Tuta’s Mac app and its offline functionality? If I lose access to my account, will it still keep the offline backup of my emails? Wonder I should keep exporting emails and importing them to an email client.

Thanks for your help!

2

Apple won’t collect anything other than crash reports if you don’t use iCloud. If you choose to switch to Thunderbird, be sure to adjust the user.js

3

Have you tested Little Snitch to check for any telemetry? Does it still communicate with other Apple apps if I block outgoing connections for Apple Mail?

Also, I’ve been using the user.js you mentioned, but I’m not sure it’s necessary since I’ll only be using the client for local backups with remote content blocked.