How do I find out what platform the pop up and mailing list is using?

[Connect-Her]

I would like to intergrate the Pop-up on my site that goes into a mailing list and create a Zap on Zapier.  How would I find out if this is possible.  I have looked through the community questions and thought someone may know how to do this or find out what platform Weebly are using. 
TIA

www.connecther.com.au

[Adam7]

It looks like there are some third party app options in our App Center which would work for that, @LeeCummins.