Microsoft Exchange Email vs. IMAP Email

	Feature	Exchange ActiveSync	IMAP4	IMAP Client for iPhone
Email	Push Email HTML Email Formatting Attachment Download Search	Yes Yes Yes Yes	Yes (through IDLE command) Yes Yes Yes	No - pull email only Yes Yes (view only) No
Calendar	Calendar Sync Accept/Decline meeting requests	Yes Yes	No No	No No
Contacts	Contact Sync Global Address List (GAL) lookup	Yes Yes	No No	No No
Tasks	Task Sync	Yes	No	No
Out of Office	Out-of-Office (OOF) email settings	Yes	No	No
Document Access	Fileshare (SMB) and/or SharePoint Document Library Access	Yes	No	No
Security	Enforce security policies to protect data on device	Yes	No	No

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