Can I set limit submission but still receive submission after that?

I have created a registration form for our seminars. We have limited numbers for the seminars, so there should be limit submissions. But we would like to collect more email lists from the submissions even if the submission has already outnumbered. Will it be possible to do so? Thanks! 

Yes, you can limit the submissions. Keep in mind that once the submissions limit is reached, your form will be disabled. It won't continue to collect email list as you mentioned. Here's how to limit the submissions: https://www.jotform.com/help/137-How-to-limit-submissions-in-a-form

Here's a guide for the new form builder version 4:

1. Open your form and go to the Settings page. Select the Form Settings tab and click the drop down menu of the Form Status and choose the Disable on submission limit.

2. You change the Submission Limit numbers and Warning Message to your own preferences.

Hope that helps. If you have questions, please contact us again.