The action of securely closing an envelope flap without using saliva is a common need. This might involve employing alternative methods to moisten the adhesive, ensuring the envelope remains properly sealed for mailing or delivery. For example, instead of licking the envelope flap, one might use a damp sponge to activate the glue.
Choosing alternative sealing methods offers benefits such as improved hygiene and prevention of unpleasant tastes. Historically, reliance on saliva was the norm; however, modern awareness of germ transmission and personal preferences have driven the search for alternative solutions. Furthermore, for mass mailings or high-volume situations, resorting to saliva becomes impractical and inefficient.