Here's my conspiracy theory: Google wrote a script to export data from "deleted" Fitbit user accounts, but forgot to disable functionality linked to the related auto-emails.
Timetable:
11/1/19 @ 11:14am: Received "Confirm your Fitbit data export request" email (I requested this export manually)
11/1/19 @ 11:23am: Received "Your export has begun" email (after I logged in and confirmed)
11/1/19 @ 11:58am: Received "Your export has completed" email
11/1/19 @ 1:16pm: Immediately after deleting my Fitbit account, received a confirmation email stating: After 7 days: Your account is frozen and can't be recovered
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11/11/19 @ 10:38am: Received "Confirm your Fitbit data export request" email (I did not make this request, and can't even log into Fitbit)
11/11/19 @ 10:38am: Received "Your export has begun" email
11/11/19 @ 10:38am: Received "Your export has completed" email
Timetable:
11/1/19 @ 11:14am: Received "Confirm your Fitbit data export request" email (I requested this export manually)
11/1/19 @ 11:23am: Received "Your export has begun" email (after I logged in and confirmed)
11/1/19 @ 11:58am: Received "Your export has completed" email
11/1/19 @ 1:16pm: Immediately after deleting my Fitbit account, received a confirmation email stating: After 7 days: Your account is frozen and can't be recovered
-------------------------------------------
11/11/19 @ 10:38am: Received "Confirm your Fitbit data export request" email (I did not make this request, and can't even log into Fitbit)
11/11/19 @ 10:38am: Received "Your export has begun" email
11/11/19 @ 10:38am: Received "Your export has completed" email