diff --git a/build/sparse-profiles/comm_taskgraph b/build/sparse-profiles/comm_taskgraph
new file mode 100644
index 0000000000..a904073bf3
--- /dev/null
+++ b/build/sparse-profiles/comm_taskgraph
@@ -0,0 +1,14 @@
+# Start with the gecko sparse-profile
+%include build/sparse-profiles/taskgraph
+
+[include]
+path:comm/build/
+path:comm/mail/config/
+path:comm/mail/locales/l10n-changesets.json
+path:comm/mail/locales/l10n-onchange-changesets.json
+path:comm/mail/locales/onchange-locales
+path:comm/mail/locales/shipped-locales
+path:comm/taskcluster
+path:comm/testing/
+path:comm/tools/lint/
+
diff --git a/build/sparse-profiles/comm_toolchain b/build/sparse-profiles/comm_toolchain
new file mode 100644
index 0000000000..4fed6f34a4
--- /dev/null
+++ b/build/sparse-profiles/comm_toolchain
@@ -0,0 +1,6 @@
+# Start with the comm_taskgraph sparse profile
+%include comm/build/sparse-profiles/comm_taskgraph
+
+# Add in third_party code since libotr is still built as a toolchain
+[include]
+path:comm/third_party/