1st Class Mail

Fast, reliable letter delivery across the UK

1st Class mail offers a fast, cost-effective, UK-wide delivery service for letters weighing up to 750g that aims to deliver your item the next working day, including Saturdays.

At a Glance 

  • Aims to deliver the next working day including Saturdays
  • Fast UK-wide delivery for letters up to 750g
  • Up to £20 compensation cover for loss or damage

What can you send?

Prices for 1st Class mail delivery vary depending on the size and weight of the item you're sending. Use the table below to determine the size and format of your letter.

Letter formats
Format Standard letter Large letter
Examples Greetings cards, personal letters, bills A4 documents, magazines, CD or DVD in case
Max weight 100g 750g
Max length 240mm 353mm
Max width 165mm 250mm
Max thickness 5mm 2.5cm

Special requirements? Upgrade your delivery with these options:

  • Signature on delivery with Royal Mail Signed For®
  • Customer collection from a local Post Office® with Local Collect®

How much will it cost?

You can calculate the price for 1st class delivery using our Get a price calculator

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Sell stamps through your shop or business and you’ll make a profit on every stamp you sell. What’s more, you could increase customer spend on complimentary products.

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