Do thank you cards need to fit a specific envelope?

Yes - your card should be about 0.25" smaller than the envelope on each side so it slides in and out easily. Confirming envelope size before you print avoids one of the most common ordering mistakes.

• Rule of thumb: the card is roughly 0.25" smaller per side than the envelope.
• Example: a 5" x 7" card fits an A7 envelope (5.25" x 7.25").
• Before ordering: always check card-to-envelope compatibility.

Matching the two up front saves you from cards that jam or slide around loosely.