forwarding multiple pages from an old, non-SS site

Hello, fellow SS Circle Team!

I have a few clients with sites on webs.com that need to be quickly transferred over to SS. We will be setting up an interim, one-page "holding" site just to get them off of webs.com, and then building out new full websites for each client.

Each site has multiple pages that will need to be temporarily forwarded to the new, SS home/index page.

The last thing I want is for Google's crawlers to yield a 404-error-page, and/or for any of the clients to experience a drop in SEO. 

Is there a way to mass-upload, say, a csv or txt file of pages to make it easier, or do I need to do this manually for each page?

tsm in advance. 

Ick, but ty 🙂