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Lots of fascinating facts, ideas and useful information about our envelopes, their uses, their manufacture and of course our website.

Our envelopes come with 3 different types of seals

Our envelopes come with 3 different types of seals

Gummed Envelopes

This is the most common sealing method for our greetings card envelopes. You close the envelope by moistening the layer of adhesive along the envelope flap. They should last for many years, providing they are stored correctly. The gum is water soluble and biodegradable. Automatic machine inserting requires gummed envelopes and the sealing is performed automatically by the mailing machine.

Self Seal Envelopes

Self seal envelopes have a strip of latex on each flap. You press the flaps together and they form a secure bond. They should last for at least a year, providing they are stored correctly. We store them in a temperature controlled environment to ensure longevity of the product. The slits that you find on self seal envelopes are for security  If the seal is tampered with the slits will rip..

Peel and Seal Envelopes

Peel and Seal envelopes have a latex strip that is covered with tape. When you peel away the tape and press own the flap it forms a very secure bond. Peel and Seal envelopes are tamper proof – it is impossible to open the envelope without tearing the flap.

Envelope Paper Weight

Envelope Paper Weight

All of our stock greeting card envelopes are 100gsm except for the Fleck Kraft which is 110gsm. We also stock a luxury range of envelopes that are 135gsm for the Plain Wove finish (untextured), 110gsm for the Textured finish and 120gsm for the Pearlescent finish.

Envelope Sizes and Styles.

Want to know your diamond flap from your wallet envelope? Or what size is a C6? To make sure that you will use the right envelope for the right letter or grettings card we have listed out the most popular envelope sizes and styles for you. Click the link to download a handy PDF.

Envelope styles and sizes PDF

Coloured Envelopes - The Psychology of Colour.

Colours affect how we feel subconciously. Every colour has a message and it’s important to be aware of these messages when you are designing greetings cards and choosing coloured envelopes. The meaning of colours can vary depending on culture and circumstances. Colour is a form of non-verbal communication. It is not a static energy and its meaning can change from one day to the next with any individual.

White White is the colour of purity. Brides wear white in many countries because white symbolizes a virgin. White stands for kindness. In many cultures white is worn at funerals. White isn’t an actually a colour but it represents all colours – the complete energy of light.

Orange The colour Orange gives a feeling of warmth and happiness. It combines the physical energy of red with the cheerfulness of yellow. Orange relates to our gut instincts. Also, orange stands for happiness and enthusiasm.

Blue The colour blue sends out the message of trust, honesty and loyalty. Blue is considered to be the colour of calm and wisdom but also as cold. Blue doesn’t like to draw attention and it hates confrontation. You can rely on blue to take control and do the right thing in difficult times.

Black Black is the colour of the hidden, the secretive and the unknown, creating an air of mystery. It keeps things bottled up inside, hidden from the world. Black is the absorption of all colour and the absence of light. Black hides, while white brings to light. What black covers, white uncovers.

Green This cool secondary colour is calming, balancing and rejuvenating. This colour stands for stability and inspires possibility. This colour is good to use when you want to represent balance and harmony.

Purple Purple represents nobility, abundance and dignity, but can also stand for creativity and imagination. Darker shades of purple characterize wealth and softer shades can be associated with spring and romance.

Pink Pink is feminine and romantic, affectionate and intimate, thoughtful and caring. It tones down the physical passion of red replacing it with a gentle loving energy.

Red The hottest and most dynamic colour, red is activating, stimulating, passionate, exciting, powerful and expanding. The colour red is commonly used to draw attention.

Yellow A bright, warm and energizing colour. Yellow is happy, warm stimulating and expansive. This colour is known to be used for giving an impression of happiness and cheerfulness.

For more information about colours and their meanings check out

You say Manila and I say Manilla (envelopes)

We say Manilla envelopes – you say Manila? says the following…

  1. a strong paper or thin cardboard with a smooth light brown finish made from e.g. Manila hemp;
    [syn: manila, manila paper, manilla, manilla paper]
  2. 2. the capital and largest city of the Philippines; located on southern Luzon;
    [syn: Manila, capital of the Philippines]

Even the industry is split, some websites offer Manilla Envelopes others Manila Envelopes. So we’ll stick to Manilla! See our Manilla Envelopes range here.

Recycling - Envelopes Are not just for Christmas

As the festive season approaches and more and more envelopes are landing on Santa’s door mat, what intersting ways can we recycle them? Here are our top 5 tips for getting that little bit extra from your envelopes.

  1. Envelope DIY – Sellotape an envelope under the hole you are drilling and catch all the dust as you drill.
  2. Envelopes In the kitchen – Next time you need to fill up the saltcellar or top up your herb jars, make a little funnel by cutting an envelope in half diagonally and then snipping off the bottom corner – Voila you have an envelope funnel perfect for filling little bottles.
  3. Envelopes in the bedroom – Snip the corner off of a coloured envelope and slip it over the corner of your page to make a bookmark.
  4. Envelopes in the Office – Organise documents by cutting an A4 envelope in half and slipping the bottom of the document into the opening. A good way to keep your papers clean AND tidy.
  5. Envelope Security – Collect all your receipts in an envelope and shred them all in one go. So much easier and quicker  than shedding them one at a time!

Got a better idea Why not send us your tip to

Greeting Card Design

Have you heard of the Ladder Club? The Ladder Club seminars are crash-courses in greeting card publishing run on a not for profit basis by Lynn Tait, of the Lynn Tait Gallery. Held once a year, there are now two separate day’s seminars, one for absolute beginners and the other for publishers who have exhibited at a trade fair and a turnover of over £3k.

Read More on the Greetings Card Association Website

Or get a greetings card designer eye view by visiting Dilly’s Treacle Treasures Blog and read about her experiences at the event in September 2012 in Essex

Choosing and Envelope

Need a stock envelope?
Yorkshire Envelopes stock the following sizes Greetings Card Envelopes

  • C6 – 114x162mm,
  • 125x175mm
  • 130x130mm
  • 133x184mm
  • 155x155mm
  • C7 – 83x112mm

Plus other sizes in our office envelopes range and some colours.

  • DL – 110x220mm
  • C6 – 114x162mm
  • C5 – 229x162mm
  • C4 – 324x229mm

Need an Customised envelope?
If you don’t see the size that you require then please contact us for our Bespoke/Custom made service.
A wallet envelope has a short, square flap and a diamond flap envelope opens with a V’ shaped flap.
Yorkshire Envelops offer the following seals

  • Peel and seal envelopes  – Peel and Seal envelopes have a strip of paper over the glue which you peel off and then stick down..
  • Gummed flap envelopes – Gummed flap envelopes need to be moistened to seal down
  • Self-seal envelopes – Self-seal envelopes have line of dry glue which seals on contact without the need for moistening.

Did you know? Interesting Envelope Facts...

  • The word envelope comes from the verb ‘to envelop’ what literally means to wrap something.
  • The idiom ‘push the envelope’ means to increase the operating capabilities of a technological system; be innovative.
  • Envelopes were originally made to protect documents. The envelopes were made of cloth, animal skins or vegetable reeds. The Babylonians used a thin sheet of clay that was wrapped around a message, crimped together and baked.
  • A Frenchman named De Valayer started a postal service in Paris in 1653. He set up boxes at strategic corners and announced that he was prepared to deliver any letters placed in them if they were enclosed in envelopes that he alone sold. The scheme failed because an enemy of De Valayer began posting live mice in his boxes.
  • Early in the 19th century, postal authorities in England faced a problem. Because the recipient of a letter paid the postage, correspondents learned to transmit brief messages (“Arrived safely. Returning Thursday.”) by means of prearranged envelope markings. The addressee would decipher the code, hand the letter back to the postman, and refuse to pay. Postage stamps were designed to put an end to this game.Source: