Automatically sync on start the app

Checklist

• I have used the search function to see if someone else has already submitted the same feature request.
• I will describe the problem with as much detail as possible.
• This issue only contains a request for one single feature, not multiple (related) features.

App version

6.711

Problem you are trying to solve

I don't like leaving K-9 mail running in the background because it uses a lot of battery, but I open the app frequently to check for new emails, and it's very inconvenient to have to pull down to sync every time I open the app.

Suggested solution

So to solve this, add a selectable automatic synchronization option when opening the application, so those who don't like leaving the application in the background won't have to live with the constant inconvenience of having to pull down to synchronize emails.

Screenshots / Drawings / Technical details

No response

Start by locating the app startup flow, synchronization entry point, and settings used for selectable behavior. Confirm how opening the application currently handles syncing, then define the setting and verify that enabled users sync on launch without requiring a pull-to-refresh.