diff --git a/manifests/m/Mozilla/ThunderbirdBeta/88.0b2/Mozilla.ThunderbirdBeta.installer.yaml b/manifests/m/Mozilla/ThunderbirdBeta/88.0b2/Mozilla.ThunderbirdBeta.installer.yaml
new file mode 100644
index 000000000..115b78c33
--- /dev/null
+++ b/manifests/m/Mozilla/ThunderbirdBeta/88.0b2/Mozilla.ThunderbirdBeta.installer.yaml
@@ -0,0 +1,14 @@
+# yaml-language-server: $schema=https://aka.ms/winget-manifest.installer.1.0.0.schema.json
+PackageIdentifier: Mozilla.ThunderbirdBeta
+PackageVersion: 88.0b2
+InstallerType: msi
+Installers:
+- Architecture: x64
+  InstallerUrl: https://download-installer.cdn.mozilla.net/pub/thunderbird/releases/88.0b2/win64/en-US/Thunderbird%20Setup%2088.0b2.msi
+  InstallerSha256: 5F1EA73DB806399829D47F050CCDE15B09BD66C4B3B3F05595AA77BA2AD3818F
+- Architecture: x86
+  InstallerUrl: https://download-installer.cdn.mozilla.net/pub/thunderbird/releases/88.0b2/win32/en-US/Thunderbird%20Setup%2088.0b2.msi
+  InstallerSha256: 2C38DEC710188F69E0CB3F67A4602DC5131EDE231C8CC3E876FB892A245FEC21
+ManifestType: installer
+ManifestVersion: 1.0.0
+
diff --git a/manifests/m/Mozilla/ThunderbirdBeta/88.0b2/Mozilla.ThunderbirdBeta.locale.en-US.yaml b/manifests/m/Mozilla/ThunderbirdBeta/88.0b2/Mozilla.ThunderbirdBeta.locale.en-US.yaml
new file mode 100644
index 000000000..9b41390e8
--- /dev/null
+++ b/manifests/m/Mozilla/ThunderbirdBeta/88.0b2/Mozilla.ThunderbirdBeta.locale.en-US.yaml
@@ -0,0 +1,18 @@
+# yaml-language-server: $schema=https://aka.ms/winget-manifest.defaultlocale.1.0.0.schema.json
+PackageIdentifier: Mozilla.ThunderbirdBeta
+PackageVersion: 88.0b2
+PackageLocale: en-US
+Moniker: thunderbird-beta
+PackageUrl: https://www.thunderbird.net
+Tags:
+- E-Mail
+- Email
+- Mail
+LicenseUrl: https://www.mozilla.org/en-US/MPL/2.0/
+Publisher: Mozilla
+PackageName: Thunderbird Beta
+License: Mozilla Public License Version 2.0
+ShortDescription: Thunderbird is a free email application that’s easy to set up and customize!
+ManifestType: defaultLocale
+ManifestVersion: 1.0.0
+
diff --git a/manifests/m/Mozilla/ThunderbirdBeta/88.0b2/Mozilla.ThunderbirdBeta.yaml b/manifests/m/Mozilla/ThunderbirdBeta/88.0b2/Mozilla.ThunderbirdBeta.yaml
new file mode 100644
index 000000000..c093103fe
--- /dev/null
+++ b/manifests/m/Mozilla/ThunderbirdBeta/88.0b2/Mozilla.ThunderbirdBeta.yaml
@@ -0,0 +1,7 @@
+# yaml-language-server: $schema=https://aka.ms/winget-manifest.version.1.0.0.schema.json
+PackageIdentifier: Mozilla.ThunderbirdBeta
+PackageVersion: 88.0b2
+DefaultLocale: en-US
+ManifestType: version
+ManifestVersion: 1.0.0
+