> For the complete documentation index, see [llms.txt](https://docs.emaildelivery.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.emaildelivery.com/docs/subscriber-opt-in-forms/what-you-can-do-with-forms.md).

# What you can do with forms

* [ ] Show different form designs depending on whether the visitor is on mobile or desktop
* [ ] Popups
* [ ] Slide outs
* [ ] Floating bars that scroll with the visitor on the top or bottom
* [ ] Embedded inline 
* [ ] Connect your existing forms
* [ ] Exit intent detection
* [ ] Single optin
* [ ] Double optin
* [ ] Send subscribers into a funnel of automated messages
* [ ] Show a success message or redirect to URL after submission
* [ ] View and conversion reporting