郵 is a Japanese kanji written with 11 strokes, listed here under the keyword “mail”. It is built from 垂 (droop) and ⻏ (walls). In Remembering the Kanji by James W. Heisig it is frame 1990.
On KumiJi Glyph Explorer, open the parts search and type “droop” + “walls”. 郵 is among the results, together with every other character containing the same shapes.
Open 郵 in the interactive kanji search
to expand every part down to its smallest pieces, add your own names and mnemonic stories,
or search for other characters by their parts.