Happy Mail Sticker Sheet - Rainbow Sticker, Envelope Sticker, Thank You Note, Small Business Sticker, Packaging Stickers Happy Mail Sticker Sheet for packaging or envelopes. Includes 18 rainbow happy mail stickers! These are hand drawn designs, made into a fun, colorful stickers. The sticker sheet is 7" x 5". Each sticker is about 1” by 1” in size. These stickers are perfect for your small business or just something fun to add to the envelope of any mail you send! Find me on TikTok: @BuzzTieDyeCreations & Instagram: @buzz_tiedye_creations :)