Magento 2 Maintenance Mode and Coming Soon Page extension is a great engagement tool to preserve the interest of your visitors when your Website is not live or going through maintenance.
You can display a Coming Soon or Maintenance Page that clearly informs the visitors about the current status of your Website.

Key Features
1. 3 Website Modes- Live, Coming Soon, Maintenance Mode
2. Enable Coming Soon Page with User Sign-up Form
3. Activate Maintenance Moe with Countdown Timer
4. Add Media to Coming Soon & Maintenance Mode Page
5. White-List Website Traffic with Respect to IP Addresses
6. Display Social Links to keep Customers Engaged
7. Option to Allow Visitors to Access CMS Pages

Before launching you can enable coming Soon Page and enable Maintenance Mode when your Website is going through maintenance.
You can add a Sign-Up form on the Coming Soon Page to get visitors email and send them email notification when your Website is Live again.
Showing a Count Down Timer acknowledge your visitors about the exact Time & Date when your Website starts working full functionally. Replace the text with easy to understand phrases on the Coming Soon or Maintenance Mode Page.

You can enable the following three type of Maintenance Mode.
• Activate Live Mode
• Enable a Coming Soon Page
• Enable Maintenance Mode

Similarly, you can customize the ‘Coming Soon’ Page. You can
• Configure Launch Settings
• Customize Text and Labels
• Define Site Restrictions
• Maximize Social Exposure
• Add Metadata for higher SEO score
• Select a Background Style
• Enable Subscription
You can display your Social Media Pages on Coming Soon Page and Maintenance Page.

Visit for MoreDetail & Demo https://marketplace.magento.com/fme-custommaintenancepage.html