Build Fast Clean Email Service(SMTP server) For Email Marketing

We are in need of creating our own email marketing tool that allows us to: create a mailing list and capture data onto it. Design newsletters that can be sent to the subscribers on our list. We will have our own SMTP Server that allows us to send emails. If you want to know how? You can check SendGrid, MailChimp, MailGun or any. It will be similar logic with current email providers like SendGrid, Mailchimp, MailGun, etc. For the first working version; That will suffice; If the UI allows us to create an account, log in and have an email sending mechanism at the backend, and track those emails status. We don't need a complete UI. A basic user interface will suffice, allowing us to compose, log in and track emails. Requirements: 1. A programming language and Database knowledge for backend (Java, Ruby,NodeJS, Go, PHP, Django, Asp.Net, or Python, Mysql, NoSql, or your favorite programming language, and database) 2. HTML, Javascript for simple UI 3. Building Restful API. ( You will create an API method for us to import data into the source, instead of using UI. API will be faster way to submit data into our database. You will not use any API like Sendgrid or other parties. You will create APIs for us to import data. About how to import the recipient list to our Email Service? You should create an API that allows us to send post requests like the attached sample to import recipients. Please see the file. ) PS: Please my friends, read it carefully. This is not a tool you will create something with SendGrid or other 3rd parties. This is a tool that you will create from scratch. You will code everything from scratch to build an Email Marketing/Service Tool. So what is created will be hosted on our server and will send emails through our SMTP (Not through SendGrid or others). You will not create something with SendGrid or others. Please read again. Sorry for repeating a lot but there is confusion. PS: If you can confirm that this is an SMTP server project and you may have specific knowledge to build it. I would greatly appreciate it, if you let me see that you have highlighted this part in your proposal, otherwise I will assume that you do not understand the project and will not be able to contact you.