[header] How to address clasp envelopes [title] Consider an adhesive label. [step] If the clasp on your envelope makes it difficult to write legibly, think about purchasing a sticky address label from a post office or stationary store. You can write on the label on a flat surface, then peel it off and fix it onto the envelope. 
If you decide to write directly on the envelope, just continue to the next step. [substeps] The return address label should be smaller than the main address label.