Digital love letter service (free), choose one of nine templates, write your feelings and seal them, then send a private link. The recipient can tap the seal to read it, no registration required.
Description translated from the developer's original Chinese by machine translation. 中文原页 ↗
数字情书服务（免费），选九种模板之一，写下心意密封后发送私密链接，收件人轻触封印即可展开阅读，无需注册
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