diff --git a/docs/README.md b/docs/README.md
index 857d83950..2e1ade669 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -5,13 +5,13 @@ path: '/docs'
 
 This guide will help you get started with Chatwoot!
 
-## Environment Setup
+### Environment Setup
 
 * [Mac](/docs/installation-guide-mac-os)
 * [Ubuntu](/docs/installation-guide-ubuntu)
 * [Windows](/docs/installation-guide-windows)
 
-## Project Setup
+### Project Setup
 
 * [Quick Setup](/docs/quick-setup)
 * [Environment Variables](/docs/environment-variables)
diff --git a/docs/development/environment-setup/mac-os.md b/docs/development/environment-setup/mac-os.md
index aabc38ed9..8f53a7ac2 100644
--- a/docs/development/environment-setup/mac-os.md
+++ b/docs/development/environment-setup/mac-os.md
@@ -104,9 +104,6 @@ launchctl unload ~/Library/LaunchAgents/homebrew.mxcl.redis.plist
 brew install imagemagick
 ```
 
-Next: [Read project setup to install project dependencies](https://www.chatwoot.com/docs/dependencies) 
-
-
 ### Install Docker
 
 This is an optional step. Those who are doing development can install docker from [Docker Desktop](https://www.docker.com/products/docker-desktop).
diff --git a/docs/development/environment-setup/ubuntu.md b/docs/development/environment-setup/ubuntu.md
index d0f234eef..8d62d7b54 100644
--- a/docs/development/environment-setup/ubuntu.md
+++ b/docs/development/environment-setup/ubuntu.md
@@ -106,5 +106,3 @@ sudo systemctl enable redis-server.service
 ```bash
 sudo apt-get install imagemagick
 ```
-
-Next: [Read project setup to install project dependencies](https://www.chatwoot.com/docs/dependencies) 
diff --git a/docs/development/environment-setup/windows.md b/docs/development/environment-setup/windows.md
index 220e5f48f..d3943cefc 100644
--- a/docs/development/environment-setup/windows.md
+++ b/docs/development/environment-setup/windows.md
@@ -100,5 +100,3 @@ sudo systemctl enable redis-server.service
 ```bash
 sudo apt-get install imagemagick
 ```
-
-Next: [Read project setup to install project dependencies](https://www.chatwoot.com/docs/dependencies)
diff --git a/docs/development/project-setup/environment-variables.md b/docs/development/project-setup/environment-variables.md
index deaefb08b..766598fe2 100644
--- a/docs/development/project-setup/environment-variables.md
+++ b/docs/development/project-setup/environment-variables.md
@@ -32,6 +32,14 @@ FB_APP_ID=
 
 For development, you don't need an email provider. Chatwoot uses [letter-opener](https://github.com/ryanb/letter_opener) gem to test emails locally
 
+For production use, use the following variables to set SMTP server.
+
+```bash
+SMTP_ADDRESS=
+SMTP_USERNAME=
+SMTP_PASSWORD=
+```
+
 ### Configure frontend URL
 
 Provide the following value as frontend url