The Whimsical Letters Club

Susan of BellissiCasa, a watercolor artist in Rhode Island, designs each edition around a season or mood in a soft vintage style, from cozy autumn houses to stacks of books and summer gardens. Every envelope holds a 5x7 watercolor art print, a matte sticker sheet, a small calendar sticker for the month, a vinyl sticker and a tiny surprise gift, all handy for journaling or gifting.

Membership is $9.35 a month on the recurring plan ($11 for a single edition), with free worldwide shipping. The cut-off is the 12th at midnight Eastern, and each edition ships by USPS on the 14th, about two months ahead of its calendar month. Past editions are sold in her Etsy shop.

Lovely for planner and journal fans who like a gentle watercolor look.