You can delete your account from Settings → Privacy → Delete Account. There's a short grace window during which your account still works and you can cancel the deletion; after that window, deletion is permanent and irreversible.
Steps
Open Settings → Privacy.
Select Delete Account.
Confirm when prompted.
Your account is scheduled for deletion and enters a grace window. During this window your account keeps working and you can still cancel the deletion.
What to expect
The grace window is about 48 hours. While it's open you can cancel the deletion and nothing is lost, but once it ends a background job permanently removes your account along with all your wishlists, wishes, reservations, and saved searches. After that your data can't be recovered, no backup restores it, and you'll receive no further emails from Wishpicks.
Collaborators and gifters. Deleting your account removes your wishlists, so anyone you shared with will lose access to them, and any reservations on those lists are removed too.
Have Wishpicks Plus? Wishpicks Plus is a paid subscription, available in all regions, that's managed separately. Without Plus you still get basic price tracking on wishes from partner stores; Plus adds tracking on any store, plus custom thresholds, alerts, price history, and higher limits. If you subscribe, review your subscription before deleting so you're not left with an active plan you can't manage.
You don't have to delete anything to change your details — you can update your name and profile in "How do I change my email or profile name?" instead. If you're unsure, contact support before the grace window ends. We reply on business days; weekend or holiday messages may be answered the next working day.