Hi,
I read your requirements,as per your requirements you need to create a Email Reminder System for your customer,I will create this system with all listed features only you need to provide the mailchimp api to send mails with template.
I am a expert full stack developer with 8+ years of experience. did many kind of project to design website as per client requirement. have good experience in PHP,Mysql,cakephp,yii,ci, WordPress themes,plugins,post types,woocomerce,ajax,web service,apis,etc.
I would really appreciate if you could take into consideration my proposal and come up with PM to provide me some more insight regarding the requirements of the project.
Looking forward to have further discussion.
Kind Regards,
saikat