Next steps for responses delivered by email

**Description**
Clients can receive GC Forms via email, if they had a published form prior to June 11, 2025 with this delivery method.

A product decision is needed about whether this is a feature that GC Forms will continue to support and what next steps are, including if a decision is made to retire it.

**Definition of Done**
A decision is made re: next steps for forms responses delivered via email.

After this decision is made, we'll also reach out [to the owner of this form](https://forms-formulaires.alpha.canada.ca/en/id/cma4tau7t01goyr0187bcig4z) regarding their specific use case and previous [requests from law enforcement](https://docs.google.com/document/d/1O_mRRIKhiM9S4v6rrxH-PvXDaKThBgIabApu4jO5qGU/edit?tab=t.0) for IP addresses of end users.