add email notifications page (#2117)

docs/the_nimbus_book/src/SUMMARY.md

@@ -11,6 +11,7 @@
 - [Keep an eye on your validator](./keep-an-eye.md)
 - [Keep Nimbus updated](./keep-updated.md)
 - [Mainnet preparations](./preparation.md)
+- [Email notifications](./email-notifications.md)
 # Volume 2
 - [Command line options](./options.md)
 - [Troubleshooting](./troubleshooting.md)

docs/the_nimbus_book/src/email-notifications.md

@@ -0,0 +1,22 @@
+# Email notifications
+
+You can create an account on [beaconcha.in](https://beaconcha.in/) to set up email notifications in case your validator loses balance (goes offline), or gets slashed.
+
+>**Tip:** If your validator loses balance for two epochs in a row, you may want to investigate. It's a strong signal that it may be offline.
+
+### 1. Sign up at [beaconcha.in/register](https://beaconcha.in/register)
+
+### 2. Type your validator's public key into the searchbar
+
+![](https://i.imgur.com/jHjkySK.png)
+
+### 3. Click on the bookmark icon
+
+![](https://i.imgur.com/O7zgE0k.png)
+
+### 4. Tick the boxes and select *Add To Watchlist*
+
+![](https://i.imgur.com/7ff4Ta7.png)
+
+
+

docs/the_nimbus_book/src/preparation.md

@@ -32,6 +32,3 @@ To avoid exposing your validator identity to the network, we recommend you use a
 
 Ad a final check, we recommend you also go through the EF'S [staker checklist](https://launchpad.ethereum.org/checklist).
 
-## Email notifications
-
-You can use [beaconcha.in](https://beaconcha.in/) to set up email notifications in case your validator goes offline.