Wix Editor Request: Adding a Mobile Pop-up With a Get Subscribers Form

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Currently, the mobile Editor doesn't offer a pop-up element with a Get Subscribers form, allowing visitors to join your mailing list.
As a workaround, you can create a mailing subscription lightbox on desktop and enable it for mobile as well. Once you do, you can edit the lightbox and optimize its layout following the steps here
While you can enable lightboxes on mobile, Google defines these pop-ups as intrusive. Showing lightboxes on your mobile site might negatively impact your SEO. 
We are always working to update and improve our products, and your feedback is greatly appreciated.