With GoFlexible your business can send 500 or more creatively shaped same sized mail items within New Zealand, with a delivery target of up to three working days.

The required postage to send mail by GoFlexible is based on the size and weight of your item. Mail must be lodged after 8am and before 5pm Monday to Friday (excluding weekends and public holidays).

Up to 20mm thickness

Go Flexible (minimum mailing quantity 500 items and a SOA is required)

Size Maximum Dimensions Maximum Weight Product code and price per item
Product code ex GST incl GST
Medium 130mm x 240mm x 20mm 500g GFXMS $0.5300 $0.6095
Large 165mm x 240mm x 20mm 500g GFX5S $0.7800 $0.8970
Oversize 260mm x 385mm x 20mm 1kg GFXOS $0.9600 $1.1040

See our Bulk Mail letter dimension guide (PDF - 57KB).

There will be additional costs if your mail does not comply with GoFlexible requirements including Addressing Standards and Domestic Bulk Mail Envelope Layout Standards for manually sorted mail.

Sending mail by GoFlexible

To send your letters or documents by GoFlexible, you’ll need to ensure that you are sending 500 or more items of the same size and shape and that each item is of the following maximum dimensions:


Sizes Maximum dimensions
Medium Length 240mm
Height 130mm
Thickness 20mm
Weight up to 500g
Large Length 240mm
Height 165mm
Thickness 20mm
Weight up to 500g
Oversize Length 385mm
Height 260mm
Thickness 20mm
Weight up to 1kg

Note: The minimum volume threshold must be met for each mailing customer. Mail from groups of customers may not be consolidated to achieve GoFlexible pricing.

How to prepare your mail for lodgement

When sending by GoFlexible, the following conditions apply.

Within a single lodgement:

  • All mail items must have an approved PermitPost impression and New Zealand delivery and return address.
  • All mail items must be the same size, shape and within the same weight range.
  • All items must comply with current New Zealand Post standards for Domestic Bulk Mail envelope layout standards.
  • For GoFlexible rates to apply to the total lodgement, you need to achieve an 85% Statement of Accuracy (SOA). If the SOA is less than 85% but at least 70%, the portion of mail below the 85% threshold will be charged at a higher rate as detailed on the Bulk Mail rate card (ADV393) (PDF – 50KB). If the declaration is missing or incomplete or the SOA declared is less than 70%, the total lodgement will be up-rated to next applicable product detailed on the Bulk Mail rate card (ADV393) (PDF – 50KB).
  • You must complete a Statement of Posting form and display the right GoFlexible product code.


With GoFlexible items can be any shape, such as round, triangular, cylindrical or geometrical provided items bulked together in one lodgement are the same. Items can also be thicker than regular mail - up to 20mm thick. They just need to fit within one of the six GoFlexible dimensions.

Non-Conformance pricing

At least 85% of your mail must comply with our Addressing Standards for your lodgement to qualify for GoFlexible pricing. If more than 15% of your mail does not comply you will need to pay a higher rate. For more information please refer to the Bulk Mail rate card (PDF – 50KB).

Statement of Posting

A Statement of Posting (AR019N) form must accompany all lodgements or the lodgement will be held by New Zealand Post we receive your form. Contact our National Contact Centre to have us send you a form. For help when completing the form download our Statement of Posting guide (PDF – 152KB).

Product codes

When completing your Statement of Posting you’ll need to tell us your product code. Refer to the Bulk Mail rate card (PDF - 50KB) for the right code.

Letter trays and containers

Place your items address side up in letter trays so that the PermitPost impression is on the top right-hand corner of the envelopes, facing the front of the tray. If you are using reusable envelopes the PermitPost impression must be in the centre or top right hand corner. Letter trays are available at your nearest Mail Centre.

A container service is available for customers with lodgements exceeding 40 trays.

Bulk Mail labels

All trays must be clearly and correctly labelled with the appropriate New Zealand Post label.

Mailhouse lodgement

For mail lodged via mailhouses, use the green label for lodgements originating from the North Island and purple labels for lodgements originating from the South Island. These labels can be ordered through your Mail Centre, as can emergency supplies of blank labels if required. To find out more about these labels please download the Bulk Mail labelling chart (PDF – 602KB).

Business customer lodgement

For mail that is not lodged via mailhouses, simplified labelling requirements apply. Download labels for manual sorting (PDF - 61KB). Please print and complete these labels and attach these to the front of your mail tray.

Large (C5) items

Large (C5) items may be lodged in letter trays or, if too large or bulky, in a bag. Bags are available from your nearest Mail Centre.

For significant volumes of large or oversize items, mail can be lodged direct into roll cages or Unit Loading Device (ULD). If mail is lodged in bags, or directly into roll cages or ULDs, mail should be bundled to a maximum thickness of 150mm and a maximum weight of 12kg per bundle or 25kg per bag. The addresses on each item must be clearly visible and all facing the same way. Bundles must be tight with the items banded down the length and width.

Layout standards

Please ensure you meet the manual sort Domestic Bulk Mail Envelope Layout Standards so that your mail can processed correctly.

Lodging your mail

Lodge your items at any New Zealand Post Mail Centre, New Zealand Post Business Mail Centre or your local PostShop or selected New Zealand Post retail outlets. If you have a New Zealand Post Account and want to have your items picked up, talk to us today.

Terms and conditions

The standard terms and conditions of the products and services offered by New Zealand Post Limited, including information on the extent of our liability, are set out in the Public Contract and the Postal Users' Guide. They are also available for reference at PostShop stores and selected New Zealand Post retail outlets.

Delivery targets

Delivery targets are a guide only and we do not guarantee your item will reach its destination within the delivery target. Delivery to and from rural or remote areas may take longer.

Required postage

The required postage is the value of postage required for New Zealand Post to carry the item. Actual price paid may vary instore. The required postage and specifications are subject to change.

Cover for loss or damage, prohibited & restricted items

Before sending mail items, make sure your item is safe to send and will be covered if it goes missing or is damaged. Make sure you read about cover for loss or damage and prohibited & restricted items.

GoFlexible and PermitPost are trade marks of New Zealand Post Limited

Next steps

  • Find out how to pre-print your envelopes with PermitPost.
  • To get a New Zealand Post Account or discuss having your mail picked up, talk to us today.