Yes, you can send requested for email delivery/read to the server using wodSMTP RequestReceipt Property. In RequestReceipt Property there is OnDeliverySuccess and OnReadMessage ReceiptsEnum constant.
Unfortunately I don't think this will works with Gmail because it depends only on server implementation. Most probably Gmail till now didn't implement this option.
Hope I helped.
Regards,
Drazen
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SABIEN project
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Harbor Technologies
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Assetdisk
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Primary Development Corporation
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Dionach
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The Net Software Group
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GlobalCare Inc.
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