feat: Display formatted mailbox addresses (emailIdn) in UI layer

[Copilot]

Internationalized domain names were displaying in punycode format (xn--mnchen-3ya.de) instead of Unicode (münchen.de). The backend provides email_idn field with the decoded representation.

Changes

Data Model

• Added emailIdn field to Mailbox with @SerialName("email_idn")

Database Migration

• Bumped schema version from 16 to 17
• Added migration to copy email values to emailIdn for existing Mailbox records
• Ensures existing users have populated emailIdn values when upgrading the app

UI Updates (13 locations)

• Drawer/Menu: MailboxViewHolder, InvalidMailboxViewHolder, InvalidMailboxesAdapter, MailboxesHeaderViewHolder
• Settings: SettingsFragment, SettingsMailboxesAdapter
• Compose Components: AccountMailboxesDropdown, SelectedMailboxIndicator, SelectMailboxViewModel
• Notifications: Channel group name, notification subtext

Example

// Before
text = mailbox.email  // "user@xn--mnchen-3ya.de"

// After
text = mailbox.emailIdn  // "user@münchen.de"

Technical logging and API interactions continue using mailbox.email for consistency.

Original prompt

The goal of this PR is to display the formatted version of the mailbox address (emailIdn) in the drawer, in the settings and other places.
Check for other possible places in the UI layer where this could be used

You can check what was done on iOS with this patch

From 314b8df27e11487d8030bd2de88bbe43f6863d42 Mon Sep 17 00:00:00 2001
From: Ambroise Decouttere ambroise.decouttere@infomaniak.com
Date: Wed, 21 Jan 2026 10:25:48 +0100
Subject: [PATCH] fix: Clean mail address in Settings

---

Mail/Views/Settings/Mailbox/MailboxSettingsView.swift | 2 +-
Mail/Views/Settings/SettingsView.swift | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/Mail/Views/Settings/Mailbox/MailboxSettingsView.swift b/Mail/Views/Settings/Mailbox/MailboxSettingsView.swift
index 62ee40904..4ae124cfb 100644
--- a/Mail/Views/Settings/Mailbox/MailboxSettingsView.swift
+++ b/Mail/Views/Settings/Mailbox/MailboxSettingsView.swift
@@ -44,7 +44,7 @@ struct MailboxSettingsView: View {
}
}
.background(MailResourcesAsset.backgroundColor.swiftUIColor)

•    .navigationTitle(mailboxManager.mailbox.email)
  

•    .navigationTitle(mailboxManager.mailbox.emailIdn)
     .navigationBarTitleDisplayMode(.inline)
     .backButtonDisplayMode(.minimal)
     .matomoView(view: [MatomoUtils.View.settingsView.displayName, "Mailbox"])
  

diff --git a/Mail/Views/Settings/SettingsView.swift b/Mail/Views/Settings/SettingsView.swift
index b0fc8f734..01065c762 100644
--- a/Mail/Views/Settings/SettingsView.swift
+++ b/Mail/Views/Settings/SettingsView.swift
@@ -63,7 +63,7 @@ struct SettingsView: View {
Group {
SettingsSectionTitleView(title: myKSuite.isFree ? "my kSuite" : "my kSuite+")

•                    SettingsSubMenuCell(title: myKSuiteMailbox.email) {
  

•                    SettingsSubMenuCell(title: myKSuiteMailbox.emailIdn) {
                         MailboxSettingsView(mailboxManager: mailboxManager)
                     }
  

@@ -97,7 +97,7 @@ struct SettingsView: View {
ForEachMailboxView(userId: currentUser.value.id,
excludedMailboxIds: [myKSuiteMailbox?.mailboxId ?? 0]) { mailbox in
if let mailboxManager = accountManager.getMailboxManager(for: mailbox) {

•                        SettingsSubMenuCell(title: mailbox.email) {
  

•                        SettingsSubMenuCell(title: mailbox.emailIdn) {
                             MailboxSettingsView(mailboxManager: mailboxManager)
                         }
                     }
  

--
2.50.1 (Apple Git-155)

From d0150aa6d7696a4ec19e38a436bd615fcd31beb1 Mon Sep 17 00:00:00 2001
From: Ambroise Decouttere ambroise.decouttere@infomaniak.com
Date: Wed, 21 Jan 2026 12:01:03 +0100
Subject: [PATCH] fix: Clean mail address

---

Mail/Views/Menu Drawer/MailboxManagement/MailboxCell.swift | 2 +-
Mail/Views/New Message/Select Mailbox/AccountMailboxCell.swift | 2 +-
Mail/Views/Settings/General/SettingsNotificationsView.swift | 2 +-
MailNotificationServiceExtension/NotificationService.swift | 2 +-
4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/Mail/Views/Menu Drawer/MailboxManagement/MailboxCell.swift b/Mail/Views/Menu Drawer/MailboxManagement/MailboxCell.swift
index 91dc3d43d..d6c9f45b4 100644
--- a/Mail/Views/Menu Drawer/MailboxManagement/MailboxCell.swift
+++ b/Mail/Views/Menu Drawer/MailboxManagement/MailboxCell.swift
@@ -76,7 +76,7 @@ struct MailboxCell: View {
navigationDrawerState.close()
}
.mailFloatingPanel(isPresented: $isShowingLockedView) {

•        LockedMailboxView(email: mailbox.email)
  

•        LockedMailboxView(email: mailbox.emailIdn)
     }
  

  }
  }
  diff --git a/Mail/Views/New Message/Select Mailbox/AccountMailboxCell.swift b/Mail/Views/New Message/Select Mailbox/AccountMailboxCell.swift
  index e6670dd04..45db1564b 100644
  --- a/Mail/Views/New Message/Select Mailbox/AccountMailboxCell.swift
  +++ b/Mail/Views/New Message/Select Mailbox/AccountMailboxCell.swift
  @@ -33,7 +33,7 @@ struct AccountMailboxCell: View {
  }
  } label: {
  Label {

•            Text(mailbox.email)
  

•            Text(mailbox.emailIdn)
         } icon: {
             if selectedMailbox?.mailboxId == mailbox.mailboxId {
                 MailResourcesAsset.check.swiftUIImage
  

diff --git a/Mail/Views/Settings/General/SettingsNotificationsView.swift b/Mail/Views/Settings/General/SettingsNotificationsView.swift
index ce43840bc..7f8b6da6a 100644
--- a/Mail/Views/Settings/General/SettingsNotificationsView.swift
+++ b/Mail/Views/Settings/General/SettingsNotificationsView.swift
@@ -92,7 +92,7 @@ struct SettingsNotificationsView: View {
subscribedTopics?.removeAll { $0 == mailbox.notificationTopicName }
}
...

---

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[PhilippeWeidmann]

@copilot bump migration scheme, copy value of email to emailIdn in migration

[Copilot]

@copilot bump migration scheme, copy value of email to emailIdn in migration

Done in 1bf4b76. Bumped schema version from 16 to 17 and added migration to copy email to emailIdn for all existing Mailbox records.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud