Currently there is no indication of progress after user uploads the site. They just need to wait for some time constantly refreshing the page. Which is a pretty bad UX.

There are two key stages to the build:

1. Static site generation
2. Processing on the hosting side after site is uploaded.

For smaller sites first stages takes most of the time and second one is almost instantaneous, for site with large number of pages it's reversed - most of the time would be spent in the second stage (https://answers.netlify.com/t/deployment-takes-a-really-long-time-1-5h-to-process-mostly-stuck-in-unpacking-archive/31782/2)

Plan for the first iteration of build notifications:

1. Notify user when all processing is done and site is live
2. Notify user on completion of build stage & if there were any errors