1 🔧 开发工具 Product Hunt 2026-08-05 💬 hey postcard - digital postcards 把心意写成数字明信片，明早8-10点随机送达，给快节奏生活留一份惊喜。 delivered tomorrow morning at a random time between 8 -10 AM Discussion | Link 数字明信片 慢消息 定时送达 随机时间 情感表达