diff --git a/packages/deploy/src/deploy.test.ts b/packages/deploy/src/deploy.test.ts
index 81192bf..2ab6d49 100644
--- a/packages/deploy/src/deploy.test.ts
+++ b/packages/deploy/src/deploy.test.ts
@@ -87,6 +87,16 @@ export default defineAgent({
 });
 `;
 
+const GMAIL_ALIAS_COLLISION_AGENT_SRC = `import { defineAgent } from '@agentworkforce/runtime';
+export default defineAgent({
+  triggers: {
+    'google-mail': [{ on: 'file.created', match: 'from-alias' }],
+    gmail: [{ on: 'file.created', match: 'from-canonical' }]
+  },
+  handler: async () => {}
+});
+`;
+
 async function withTempPersona(
   persona: Record<string, unknown>,
   agentSource = SCHEDULE_AGENT_SRC
@@ -403,6 +413,25 @@ test('preflightPersona refuses when the agent triggers a provider the persona do
   }
 });
 
+test('preflightPersona merges trigger lists when an alias collides with its canonical provider', async () => {
+  const { personaPath, cleanup } = await withTempPersona(
+    basePersonaJson({ integrations: { 'google-mail': {}, gmail: {} } }),
+    GMAIL_ALIAS_COLLISION_AGENT_SRC
+  );
+  try {
+    const pre = await preflightPersona(personaPath);
+    assert.deepEqual(pre.agent.triggers, {
+      gmail: [
+        { on: 'file.created', match: 'from-alias' },
+        { on: 'file.created', match: 'from-canonical' }
+      ]
+    });
+    assert.deepEqual(pre.warnings, []);
+  } finally {
+    await cleanup();
+  }
+});
+
 test('preflightPersona refuses optional integrations enabled by undeclared inputs', async () => {
   const { personaPath, cleanup } = await withTempPersona(
     basePersonaJson({
diff --git a/packages/deploy/src/preflight.ts b/packages/deploy/src/preflight.ts
index 0c0d4de..6b9699f 100644
--- a/packages/deploy/src/preflight.ts
+++ b/packages/deploy/src/preflight.ts
@@ -127,7 +127,8 @@ function normalizeTriggerProviderAliases(agent: AgentSpec): AgentSpec {
   const aliases = KNOWN_TRIGGER_PROVIDER_ALIASES as Record<string, string>;
   const normalized: NonNullable<AgentSpec['triggers']> = {};
   for (const [provider, list] of Object.entries(triggers)) {
-    normalized[aliases[provider] ?? provider] = list;
+    const key = aliases[provider] ?? provider;
+    normalized[key] = [...(normalized[key] ?? []), ...list];
   }
   return { ...agent, triggers: normalized };
 }