thunderbird/thunderbird-android

Unread message count wrong for filtered Unified Inbox

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#9,773 opened on Sep 10, 2025

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 (5 comments) (0 reactions) (0 assignees)Kotlin (13,479 stars) (2,734 forks)batch import
good first issuetype: bug

Description

Checklist

  • I have used the search function to see if someone else has already submitted the same bug report.
  • I will describe the problem with as much detail as possible.

App

Thunderbird for Android

App version

12.1

Where did you get the app from?

F-Droid

Android version

16

Device model

Google Pixel 6 Pro

Steps to reproduce

  1. Click the hamburger menu to see the account list
  2. Check the unread email count for each account vs the Unified Inbox

Expected behavior

UN icon for Unified Inbox count reports unread count for only “opted-in” accounts.

Actual behavior

UN icon shows unread messages for all accounts.

I have 4 accounts set up, and have removed two from the unified inbox. However, the new Unified Inbox pseudo-account icon “UN” seems to show the sum of all account unread inbox emails, not just those attached to the unified inbox.

I have all emails read apart from several in one of the accounts that is not attached to the unified inbox. The unread count on the UN icon shows the same number that is also on the icon for said unread account.

[Unrelated to this issue, largely, is that I'm not quite sure what the use case is for the new UN icon, it seems to just make it necessary to have one more click to access non-Inbox folders in my “main” account, which previously sat “under” the unified inbox. It's not needed to return to the unified inbox as back already (and still) does that.)l]

Logs

No response

Contributor guide

Tech stack
kotlinandroid
Domain
mobile
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Android developmentKotlinK 9 Mail architectureUnified inbox logic
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60
Research direction
Investigate the implementation of the Unified Inbox unread count in K 9 Mail. Look at the 'Account' class and how accounts are filtered for unified inbox. Check if there are any existing tests for unread count logic. The issue comments may provide additional context on the expected behavior.