Can I create my own form and then upload input (email addresses) to jotform for online access?

It's easier for me to code the form to match my website but I don't want to manage the list of submitted emails manually. Is there a way to upload the form content to jotform and use your site to manage the submissions (not expecting many)?

You can access your submitted data by going to the submissions page, additionally you can also create reports to easily access your data, here are some of them that may help you: 

How-to-Create-an-HTML-Table-Listing-Report

How-to-Create-a-Grid-Listing-Report

You may also provide us more details about how would you like to manage the submitted info, so we can properly address your question. 

We will wait for your response. 

I understand going to the submissions page after someone has submitted something. I just don't want to use the form creator but would rather use my own html/style sheet to get the look I want on the website but then I need an action (module, php, js or something) to get the email address uploaded to jotform when someone hits submit.  Then I'll have an online list to manipulate via the submissions page.

Technically this seems possible but I don't know enough about jotform to get it to work. I was disappointed when I created a simple form and looked at the embed code. No html/CSS that I could mess with, just a link to the whole script. I didn't want to spend the time and effort to make the simple form match what I have on the website exactly. Is there a way to make this work?

Thank you for the clarification. Please note that it is still possible to modify the design of the form to get the look that you want on your website. Simply inject your custom CSS into the form to apply your own design to the form. Here's how: How to Inject Custom CSS Codes. Furthermore, you can also use the Form Designer to edit the design. By simply customizing the CSS of the form, you can get the look that you want for your form and still receive the submissions on your jotform submissions page.

It is also possible to embed the form to your page using the full source code. Here's how: How to get the Full Source Code of your Form. By using the full source, you will be able to add html elements to your form and also add php or javascript for functionality.

Hope this helps. Please let us know if you need further assistance.
Regards.