I would like users to be able to save progress and come back to a survey using a link sent to them after they start the survey. I envision the flow to be:

• The user starts a survey and enters an email address
• The entering of an email is a trigger that sends a message to that email with the link to the current survey instance
• The survey instance is not closed, however, and the user can continue on with the survey if they wish or come back to it at a later date using the link that was emailed.

I do not want to use the built in “Allow respondents to finish later” setting as this uses cookies which have several disadvantages :

• Using cookies does not allow the user to resume the survey on another browser, device, or if they happen to erase their cookies
• Using cookies also makes it harder to abandon an in-progress survey to start a new one (a desired feature for our use case)

Is there a modern solution, or better yet, a new qualtrics feature for this situation that does not introduce a break in the user experience?

OLD SOLUTIONS:
I found this thread from 2 years ago that seems like a functioning workaround (but is still a workaround and doesn’t seem the cleanest solution): 

And this was a proposed solution 3 years ago for using two separate surveys to achieve something similar (but by using two surveys you introduce a break in the user experience):

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Thanks!