You've still got time to mail your Christmas presents, but time is running out.

New Zealand Post workers are in overdrive to deliver gifts before the big day, in the wake of a shopping frenzy.

Online shopping is up 27 percent on the same period last year.

New Zealand Post spokesman Chris Wong told Mike Yardley there's still time to get your domestic presents in the post.

He says Monday is the cut-off date for domestic parcels and mail.

The cut-off date for courier deliveries is Wednesday.

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