New phone is downloading old deleted emails

Which email account are you referring to? Google, iCloud, AOL, Exchange, Outlook, Yahoo or any Other (Refer to the pic )below

1. Is this your corporate iPhone? Then please contact the system administrator of your corporate
2. If it is your personal device, in that case, do you have any profile installed by your corporate/organization/enterprise/School Management?
   1. Erase the profile added by you If you have installed a profile on your own --> Install or remove configuration profiles on iPhone - Apple ...
   2. Or please get in touch with the system administrator of the organization who provided the profile to you

It depends on the email provider and your email settings:

1. IMAP Accounts (Gmail, iCloud, Outlook, etc.)
   1. When you delete an email on your iPhone, it is also deleted from the email server and other synced devices.
   2. Some services move deleted emails to a Trash or Bin folder, where they stay for a set period (e.g., Gmail keeps them for 30 days before permanent deletion).
   3. If your iPhone is offline when deleting an email, the change syncs once it reconnects.
2. POP Accounts
   1. If your iPhone is set to delete from the server when removed from Inbox, the email is deleted from the server when you delete it from your phone.
   2. If set to keep emails on the server, then the deleted email remains on the email provider’s server and can still be accessed from another device.
3. Exchange Accounts (Work/School Emails)
   1. Deletions sync across all devices unless retention policies are in place (some companies retain deleted emails for a set period before final deletion).

If you accidentally delete an email, check the Trash/Bin folder on both your iPhone and the webmail interface of your email provider.