How do I empty trash on iPhone 12?

Trash where? Email, Notes, Voice Memo, Files App, Photos etc...

Bd1510 Said:

"How do I empty trash on iPhone 12?: Have several thousand emails and want to mass deletes starting 1/1/2021 back to beginning e Mail. How?"

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Use a Computer:

Use a computer to delete your eMails --- it would be more user-friendly.

Have several thousand emails and want to mass deletes starting 1/1/2021 back to beginning e Mail. How?