Royal Mail Letter Stamp Sizes. Although classed as a 'letter' for the purpose of calculating ( and minimising! Please use our price finder tool to calculate the cost of sending your parcel or letter.
See the 2021 royal mail mailmark prices. The largest standard envelope size to fit within this range is a c5, which measures 229mm x 162mm, giving a few mm extra allowance to fit nicely under the limit. Royal mail group contact us collect a missed delivery i think my mail is lost service updates how to make a claim.
Medium parcel for parcels up to 20kg.
Sizes and what you can send letter. See the 2021 royal mail mailmark prices. A large letter can be no larger than 353 x 250 x 25mm (a normal letter can be only up to 240 x 165 x 5mm) with a maximum weight of 750g. Click here to learn more.