mailing list with Google or Squarespace

Hi everyone

I am a layman at this so please don't upset if this is too basic of a question! I have been trying to get my Google account to work with my newsletter on the website so I can capture emails and build my list. It is just not working and I am working on the problem and I have been chatting with the support people and are waiting to hear back.  So I was thinking that this is getting too complicated and I am thinking about canceling the Google account and just leave it all with Squarespace. I just want it all to work and get my site off the ground. As I am a newbee I want too make sure that I am not making a mistake doing that. Any advice would be so appreciated.

Thanks in advance

Norman