Internal Mail Envelopes
Here you can find our huge range of internal mail envelopes. These envelopes will take an A4 size sheet of paper without the need of folding it. Internal mail envelopes are designed to be resealable and come printed with a grid to indicate who the mail is for, they can the n be opened and reused.
Within this range of envelopes we have a variety of colours available. There are also a range of print styles available for how you would like the grid to appear, whether in block or list form.
All of our envelopes are from top brands including 5 Star, New Guardian and Blake, giving you top quality envelopes each and every time.
We have a huge variety of envelopes options available- if you need help finding the right product for you, please feel free to give our friendly customer service team a call.
Our top sellers in Internal Mail Envelopes

Q-Connect Envelope 381x254mm Internal Mail Resealable 200gsm Manilla (Pack of 10 ...
60% OffRRP £471.67393.06 SAVE £233.93
Now only £190.96£159.13
View Deal![New Guardian Envelopes Internal Mail Pockt Intertac Resealable 90gsm C4 324x229mm Manil Orange [Pack 250] J26312](
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New Guardian Envelopes Internal Mail Pockt Intertac Resealable 90gsm C4 324x229m ...
53% OffRRP £165.73138.11 SAVE £73.50
Now only £77.53£64.61
View Deal![5 Star Office Envelopes Internal Mail Pocket Resealable 90gsm C4 324x229mm Manilla [Pack 250] 938512](
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5 Star Office Envelopes Internal Mail Pocket Resealable 90gsm C4 324x229mm Manil ...
67% OffRRP £95.1479.28 SAVE £53.51
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ValueX Pocket Internal Mail Envelope C4 90gsm Manilla (Pack 250) 40198BL
37% OffRRP £63.0252.52 SAVE £19.49
Now only £39.64£33.03
View Deal-
Q-Connect Envelope 381x254mm Internal Mail Resealable 200gsm Manilla (Pack of 100) KF76979 KF76979
These high quality Q-Connect Manilla internal envelopes feature a reusable string and...
SAVE 59% off RRP
Only £190.96 inc VAT£159.13 exc VAT
Product Code: KF76979
Stock: 34
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New Guardian Envelopes Internal Mail Pockt Intertac Resealable 90gsm C4 324x229mm Manil Orange [Pack...
Completing the New Guardian assortment are these Internal Mail envelopes. Great for t...
SAVE 53% off RRP
Only £77.53 inc VAT£64.61 exc VAT
Product Code: J26312
Stock: 2
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5 Star Office Envelopes Internal Mail Pocket Resealable 90gsm C4 324x229mm Manilla [Pack 250] 938512
With our comprehensive range of office stationery, 5 Star has always been your watch ...
SAVE 67% off RRP
Only £30.92 inc VAT£25.77 exc VAT
Product Code: 938512
Stock: 31
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ValueX Pocket Internal Mail Envelope C4 90gsm Manilla (Pack 250) 40198BL
Our comprehensive range of transit mail products include write on panels and easy to ...
SAVE 37% off RRP
Only £39.64 inc VAT£33.03 exc VAT
Product Code: EXR40198BL
Stock: 21
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New Guardian C5 Envelopes Internal Mail Orange (Pack of 500) L26311 JDL26311
These New Guardian internal mail envelopes are made from durable 85gsm paper and come...
SAVE 49% off RRP
Only £111.40 inc VAT£92.83 exc VAT
Product Code: JDL26311
Stock: 1
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New Guardian Envelopes FSC Internal Mail Pocket Tuck Flap HvyWght 130gsm C4 324x229mm Manilla [Pack ...
Completing the New Guardian assortment are these Internal Mail envelopes. Great for t...
SAVE 54% off RRP
Only £53.48 inc VAT£44.57 exc VAT
Product Code: A26310
Stock: out of stock
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New Guardian Envelopes Internal Mail Pockt Intertac Resealable 90gsm C4 324x229mm Manil Orange [Pack...
Completing the New Guardian assortment are these Internal Mail envelopes. Great for t...
SAVE 58% off RRP
Only £71.87 inc VAT£59.89 exc VAT
Product Code: L26311
Stock: out of stock
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Q-Connect C4 Envelope Internal Mail Resealable 85gsm Orange (Pack of 250) J00058 KF01411
With an intertac closure method, you can seal and re-seal Q-Connect Orange C4 Interna...
SAVE 67% off RRP
Only £76.30 inc VAT£63.58 exc VAT
Product Code: KF01411
Stock: out of stock
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New Guardian C4 Envelopes Internal Mail Manilla (Pack of 250) A26310 JDA26310
These New Guardian internal mail envelopes are made from durable, heavyweight 130gsm ...
SAVE 56% off RRP
Only £66.11 inc VAT£55.09 exc VAT
Product Code: JDA26310
Stock: out of stock
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New Guardian C4 Envelope Internal Mail Orange (Pack of 250) J26312 JDJ26312
These New Guardian internal mail envelopes are made from durable 85gsm paper and come...
SAVE 49% off RRP
Only £105.28 inc VAT£87.73 exc VAT
Product Code: JDJ26312
Stock: out of stock
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Q-Connect C4 Envelope Internal Mail Resealable 200gsm Manilla (Pack of 100) KF76980 KF76980
These high quality Q-Connect internal mail envelopes feature a reusable string and wa...
SAVE 47% off RRP
Only £130.43 inc VAT£108.69 exc VAT
Product Code: KF76980
Stock: out of stock
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5 Star Office Envelopes Internal Mail Pocket Resealable 120gsm C4 324x229mm Manilla Orange [Pack 250...
With our comprehensive range of office stationery, 5 Star has always been your watch ...
SAVE 80% off RRP
Only £39.77 inc VAT£33.14 exc VAT
Product Code: 906659
Stock: out of stock