How to Assemble Envelope Liners

Looking to DIY your envelope liners and save a little on your wedding invitations? You’re in the right place!

Assembling envelope liners is easier than you might think. There are a few different ways to go about it, and honestly, you can’t really go wrong. But today, I’m sharing my personal go-to method—it’s simple, reliable, and always gives a polished finish!

Materials

First things first, make sure you have everything you need –

• Envelopes

• Liners

• Double Sided Tape

  • If you are just doing this one time, I would get this tape, with these refills.

  • If you are a stationer or just love snail mail and plan to assemble many liners over the years, I recommend investing in one of these.

Step 1: Open all your envelope flaps

Go through all your envelopes and open their flaps, so that they are ready for the liners to be inserted!

Step 2: Test out your tape

Before using the double-sided tape on your good liners, perform a few test pulls on scrap paper to ensure it is dispensing correctly and to familiarize yourself with its mechanism.

Step 3: Grap a liner

Grab one envelope liner and lay it right side down. (it’s best to start out one envelope/liner at a time, then you can do more as you get more experienced)

Step 4: Tape the Edges

Run your double-sided tape along the liner as shown in the photograph below. You want to cover the top, triangular part of the liner, then add a line down the middle for extra adhesion

Step 5: Insert Liner

Now take the envelope liner, and insert it into the envelope. You’ll want to try to prevent the liner from touching the envelope until you have it in place. 

1. Insert the liner until you hit the very bottom of the envelope

2. From there, center it left to right as best as you can

3. Once in place, press down, adhering the liner to the envelope

Step 6: Fold the Envelope

Grab the right or left corner of the envelope at the center fold, between the front and back flap. Pinch that crease, and slide your finger down the entire envelope, folding the envelope at the crease with the liner inside.

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That’s it!

If you want to see how I do this in action, you can check out this video. Also, below are a few extra tips for you!

• Batch work! Once you get familiar with the process, feel free to do more than one envelope at a time

• Not loving this method? Here is another strategy if you want to try something different.

• Oily hands? Rub them with some baby powder to prevent any smudges from getting on your envelopes or liners.

• A lot of stationers also use double-sided tape to close the envelopes. If you have leftover tape, consider this as an option! I prefer using envelope moistener myself, but really, anything with a little extra adhesive works.

Happy Mailing!
– Sally

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