I filed on 03/27/2025 and am still getting email reminders to file. I checked my filing status after getting the first reminder from TurboTax.
I see this is a multi-year issue. It should not be difficult for TurboTax to appropriately select the reminder email audience.
Many users have multiple accounts; the "old" accounts can trigger marketing emails that remind you to file--even if you already filed. Disregard those marketing emails the same way you disregard other spam emails.
The answer doesn't fit the situation. The reminder emails display my (mostly redacted) User ID. The reminder emails and filing confirmation emails went to the same email address.
I could test the answer by going through the forgot User ID process I suppose. https://ttlc.intuit.com/turbotax-support/en-us/help-article/accountant-access/forgot-user-id-password/L4za3Ln1j_US_en_US?uid=m94hd4hy
Organizations ask for feedback. They then can choose whether to use it or not.