Hello sir,
I think you will get a solution from your problem. Let's see what I do for you,
jQuery:
I'll add custom animation, effect, slider or any custom script in your design. I'll add any jQuery functionality for you.
PHP:
I'll Develop your site with Custom PHP. or I'll Set Custom function for you. I'll do work whatever you want. Database connection, insert data to database, email sending function or any custom function, I'll set on your site.
JavaScript:
I'll Add any Custom JavaScript Script to your website. I'll add all the script whatever you want.
Bootstrap 3/4/latest version:
I'll add any css or bootstrap code. I can marge your running website with Bootstrap. and I can add Bootstrap, without any bug issue.
ajax:
I'll add ajax code to your website. it will be WordPress also. ajax make your website more and more than dynamic. because ajax will insert your data to your database without page reload. your all of the form data of your website's will insert or save in your database without page reload. it makes your newsletter to more dynamic.
Please tell me which Service you want.
Ready to work with you.
Thank you