Coming Soon and Maintenance Mode by Traslatability
Put your site behind a coming soon or maintenance page and collect the email addresses of everyone waiting for it.
Why sites run Coming Soon and Maintenance Mode
A launch that starts before the site does
A holding page with a form on it turns the weeks before you open into a list of people who asked to hear from you. When you open, the plugin writes to all of them — which is the part these plugins usually leave out.
Maintenance that does not cost you rankings
A site that answers 200 while it is away tells search engines the holding page is the site now. This one answers 503 with a Retry-After worked out from your own opening time, so an afternoon of work stays an afternoon.
Show the work without handing over a password
Send a client one link and they see the finished site — no account, no password, no explaining. Make a new link and the old one stops working the same second.
Live in two minutes
Pick a design, write a headline, switch the mode on. Nothing to install alongside it, no page builder, no template to configure, and nothing fetched