Plugins: Coming Soon & Maintenance Mode

The simplest and fast for me was IgniteUp

1. Coming Soon Page & Maintenance Mode by SeedProd: Must be paid to get anything usable.
2. IgniteUp – Coming Soon and Maintenance Mode: Not bad, has 3 usable templates
3. Maintenance: Clean and simple
4. WP Maintenance Mode. Maybe too manual, open-source.
5. Under Construction. Very good, but has problem with SEO

Didn’t test Launcher

• joostdekeijzer/WP-Maintenance-Mode, LightStart – Maintenance Mode, Coming Soon and Landing Page Builder

Maintenance Mode DIY Options