The postie will only be stopping at the mailbox every second day from later this year - and they might be travelling by mobility scooter.

NZ Post’s Mail and Communications chief operating officer Ashley Smout said households in large towns and cities would get their mail every second day from July. The change will be rolled out in smaller centres over two years.

“Our target of 95 percent of standard mail delivered within three working days remains, just as it is now. Six-day-a-week deliveries will continue for priority mail and courier parcels, so people should still check for mail every day.”

Alternate days of delivery will be trialled around Ellerslie, Auckland, before the July rollout.

NZ Post has also been trialling two and three-wheeled customised mobility scooters in Wellington's Hutt Valley and will test them further in New Plymouth.

NZ Post has blamed its decision on the decline in the number of letters being sent.

“Our analysis shows the average household receives letters just three days a week,” Mr Smout said.