Only the first is grammatical. The verb send in the active form works like this: a) You send someone something or b) You send something to someone In the passive, you have 1) Someone is sent something or 2) Something is sent to someone . "The items" qualifies as "something", so you are using 2).
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mango olive 390The items will be send you as soon as possible.Incorrect.
mango olive 390The items will be sent to you as soon as possible You need a full stop here.Correct.