Release: Thunderbird Beta 20.0b1

Author: thunderbird-botmobile[bot]

app-metadata/net.thunderbird.android.beta/en-US/changelogs/52.txt

@@ -0,0 +1,11 @@
+Thunderbird version 20.0b1
+
+Changed:
+- Only show message notification config actions above the cutoff
+
+Fixed:
+- Account drawer stayed open after account switch despite auto-select Inbox setting
+- Imported settings could incorrectly show 'XX' avatar monogram
+- Printed emails omitted message headers and used minimal margins
+- Compose button did not work in tablet split-screen message view
+- New mail notifications showed avatars when contact pictures were disabled

app-thunderbird/build.gradle.kts

@@ -14,7 +14,7 @@ android {
         applicationId = "net.thunderbird.android"
         testApplicationId = "net.thunderbird.android.tests"
 
-        versionCode = 51
+        versionCode = 52
         versionName = "20.0"
 
         buildConfigField("String", "CLIENT_INFO_APP_NAME", "\"Thunderbird for Android\"")
@@ -110,7 +110,7 @@ android {
             signingConfig = signingConfigs.getByType(SigningType.TB_BETA)
 
             applicationIdSuffix = ".beta"
-            versionNameSuffix = "b0"
+            versionNameSuffix = "b1"
 
             isMinifyEnabled = !isCI
             isShrinkResources = !isCI

app-thunderbird/src/beta/res/raw/changelog_master.xml

@@ -1,6 +1,18 @@
 <?xml version="1.0" encoding="utf-8"?>
 <?xml-stylesheet type="text/xsl" href="changelog_style.xsl"?>
 <changelog>
+    <release version="20.0b1" versioncode="52" date="2026-05-26">
+        <change>Changed: Only show message notification configuration actions above the cutoff</change>
+        <change>Fixed: Account drawer stayed open after account switch despite auto-select Inbox setting</change>
+        <change>Fixed: Imported settings could incorrectly show &#39;XX&#39; avatar monogram</change>
+        <change>Fixed: Printed emails omitted message headers and used minimal margins</change>
+        <change>Fixed: Compose button did not work in tablet split-screen message view</change>
+        <change>Fixed: Accented subfolder names sorted to bottom instead of locale order</change>
+        <change>Fixed: Disabled font size setting appeared in General Settings search</change>
+        <change>Fixed: New mail notifications showed avatars when contact pictures were disabled</change>
+        <change>Fixed: Mail opening still used fade-in after animations were disabled</change>
+        <change>Fixed: Sidebar account-switching animations were too fast</change>
+    </release>
     <release version="19.0b2" versioncode="51" date="2026-05-11">
         <change>New: Integrate an easily discoverable way to configure and use Thundermail</change>
     </release>