Carry Echo 对比

与其他“寄信给未来”方式的诚实对比：各自最擅长什么、价格多少，以及 Carry Echo 的不同之处。每条信息都注明了核实日期。

• 对比 FutureMeFutureMe is built for letters to your future self; Carry Echo for letters to someone you love, on paper, with photos and voice, on the day you choose. An honest comparison.
• 对比 LetterToLaterLetterToLater is the cheapest way to schedule an email with photos and audio. Carry Echo is a letter on paper for someone you love. Prices, limits and differences.