diff --git a/fee-monitor/src/index.ts b/fee-monitor/src/index.ts
index 6b2975ff..c633acbd 100644
--- a/fee-monitor/src/index.ts
+++ b/fee-monitor/src/index.ts
@@ -178,6 +178,8 @@ async function main() {
     }, 60_000); // 1 minute interval
 
     const dog = createWatchdog(30);
+    slack.sendInfo("start", "");
+    email.sendInfo("start", "start");
     for (;;) {
         console.log();
         console.log(`BlockNumber: ${blockNumber}`);
diff --git a/indexer-monitor/src/index.ts b/indexer-monitor/src/index.ts
index 8aec70ea..d678d457 100644
--- a/indexer-monitor/src/index.ts
+++ b/indexer-monitor/src/index.ts
@@ -7,6 +7,7 @@ import { IndexerAPI, IndexerAPIImpl, TestIndexerAPI } from "./IndexerAPI";
 const emailClient = new EmailClient();
 type Notification = Notifications.Notification;
 let lastNotiForTest: Notification | null = null;
+const networkId = getConfig("NETWORK_ID");
 
 function colorFromLevel(level: "error" | "warn" | "info"): "danger" | "warning" | undefined {
     switch (level) {
@@ -358,6 +359,19 @@ async function main() {
         throw err;
     }
 
+    SlackNotification.instance.send({
+        title: `[${networkId}] indexer-monitor start`,
+        text: "",
+        color: "good",
+    });
+    await emailClient
+        .sendAnnouncement(
+            targetEmail,
+            `[${networkId}] indexer-monitor start`,
+            "indexer-monitor start",
+        )
+        .catch(console.error);
+
     // 10 minutes interval
     setInterval(checkDayChange, 10 * 60 * 1000, indexerAPI, targetEmail);
 
diff --git a/juggle-ccc/src/index.ts b/juggle-ccc/src/index.ts
index b602cbd6..8b03366d 100644
--- a/juggle-ccc/src/index.ts
+++ b/juggle-ccc/src/index.ts
@@ -116,6 +116,25 @@ async function main() {
         }, 60_000);
     }
 
+    const startMessage = "start";
+    try {
+        await sendSlackWebHook(slackWebHook, "info", networkId, startMessage);
+    } catch (err) {
+        console.error(`Cannot send slack message: ${err.message}`);
+    }
+    try {
+        await sendMail(
+            sendgridApiKey,
+            sendgridTo,
+            "info",
+            networkId,
+            startMessage,
+            startMessage
+        );
+    } catch (err) {
+        console.error(`Cannot send mail: ${err.message}`);
+    }
+
     let retry = 0;
     while (true) {
         try {
diff --git a/monitor/index.ts b/monitor/index.ts
index 9b96c27b..baa386c9 100644
--- a/monitor/index.ts
+++ b/monitor/index.ts
@@ -54,6 +54,18 @@ function sendNotice(error: Notification, targetEmail: string) {
   }
 }
 
+function sendStart(targetEmail: string, networkId: string) {
+  const message = `[${networkId}] monitor start`;
+  SlackNotification.instance.send({
+    title: message,
+    text: "",
+    color: "good"
+  });
+  emailClient
+    .sendAnnouncement(targetEmail, message, message)
+    .catch(console.error);
+}
+
 const checkDeath = (() => {
   let prevBestBlockNumber = 0;
   return async (rpc: Rpc, targetEmail: string, networkId: string) => {
@@ -293,6 +305,8 @@ async function main() {
 
   lastDate = new Date().getUTCDate();
 
+  sendStart(targetEmail, networkId);
+
   // 10 minutes interval
   setInterval(checkDayChange, 10 * 60 * 1000, targetEmail, networkId);