Install setup and configure email marketing tools, using mailchimp, facebook signup form, wordpress subscription forms using plugins, and pop up form.
Compare MailChimp as email marketing management tool with alternatives MailMunch, Aweber, Get Reponse and Sendy(hosted on Amazon). They all pretty much do the same thing manage getting email subscriptions, and then managing sending email newsletters etc. and the dialogue with the subscriber such as unsubscribing etc. The pay plans from trial, free or basic up to a modest monthly charge seem quite reasonable, I find MailChimps free account useful for small sports club to get up and running sending a newsletter from their website very good, and the modest monthly charge for a large enough mail list for a start up reasonable enough.
Set up Leadin (from Hubspot) account and configure to integrate with website using Leadin WordPress plugin. I am impressed with the basic(free) leadin version, but know it is the drug dealer business plan to get you hooked and use the paid version. I would recommend any website owner give it a go and see how its data for visitors can be useful to them.