How can I send a to all my subcribers at once?

how can I send a to all my subcribers at once

Do you want to send the form link to all the users?

You may assign them the form link. They will get an email to fill-up the form.

Please check this guide:

https://www.jotform.com/help/652-Adding-assignees-to-your-form

Let us know if you have further questions.

Thanks.