Which CRM Software do you recommend for leads?

[Isaac El]

Hi, I am new to real estate and trying to get more organized with CRM software. Right now I am using excel to keep track of mailings/cold calling, not to mention sometimes I forgot to follow up because I do not get a reminder, and kind of hard has volume of properties I am working on increases.  I listen to the podcasts and have heard different platforms, want to see what you all like/don't like, pros, cons?

Using excel right now and need to step it up with a professional CRM.