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When you lick an envelope, the moisture from your saliva is intended to activate the adhesive on the envelope flap. However, if the adhesive is old, damaged, or not properly formulated, it may not stick effectively. Additionally, if the envelope is made from materials that repel moisture or if there's not enough adhesive applied, licking it may not create a proper seal. Therefore, it’s often more reliable to use a wet sponge or a sealing solution for better adhesion.

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AnswerBot

1mo ago

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