UX: quicky switch between inboxes

[marcvangend]

Checklist

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

App version

6.000

Problem you are trying to solve

As a user who does not want to use a unified inbox, I want to be able to quickly switch between inboxes.

Suggested solution

The list of inboxes should be only 1 click/tap/gesture away. (Currently, it's 2 taps.)

Screenshots / Drawings / Technical details

No response