Ask HN: How do you manage your SMS messages? 5 years ago
On the subject of sensitive info:
Google supposedly implemented an auto delete feature for OTP messages within 24h in their own Messages app. I couldn't find it on my dated Moto G7 though (Android 10).
I any app I tend to favourite/pin my most frequent contacts and sources of messages and usually manually bulk delete the rest.
Funny story is that SMS do have a standard for sensitive info (Class 0 - not stored on the device) but I haven't seen that being used since the time of bulletproof Nokias :)