價格：免費
檔案大小：7 MB
版本需求：需要 iOS 8.1 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：英語
Open Letter is a digital access communication letter application that is intended to be read by a wide audience, or a letter intended for an individual, but that is nonetheless widely distributed internationally... Open letters can also be addressed directly to a group rather than any individual.
支援平台：iPhone