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How long can email messages remain on the iPhone?

How long can email messages remain on the iPhone?

Message retention is based on the account type and the account settings used.


Exchange ActiveSync: Until the messages is deleted, either on the iPhone or on your Exchange email client. By default, the iPhone will download the last 3 rolling days of messages to the phone for viewing. Older messages are not deleted from the server, they are just not visible. The 3 day default can be changed to up to 1 month.


POP/IMAP: Deleted messages are removed after 1 week by default (adjustable to up to never). Inbox messages are stored based on preferences set in Settings>Mail, Contacts, Calendars> Show : 100 Recent Messages. The default is 100 recent messages. Any messages over the set amount are deleted from the iPhone in order to efficiently manage space on the iPhone. You can store up to 1,000 messages. The oldest messages are deleted first.

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