Looking for your help in regards of sending followup newsletters to subscribers

[Sumnesh .]

Dear Group Members,

I am a solopreneur developing an app and get stucked since last 4 days and looking for your help in form of suggestion, If you know any way to get this achieved.

If you know any solution for this, please reply me back at sumneshtri...@gmail.com

Here below is what I am trying to achieve:
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I am looking for a email autoresponder solution where I can add subscriber details (firstname, lastname, email, sex, dob, city and pincode) via API using PHP utilizing my shared hosting account at hostgator.com and system should send a verification email to the subscribers and once user click on verification link in verification email, he should be added to the list.

Also I would like to personalize each email of email sequence having subscriber's first name and last name as part of body text and also href location of outgoing link in body text should also be personalized by adding firstname as value of query parameters 'fname' in link url.

Regards
Sumnesh Trivedi
Email: sumneshtri...@gmail.com