Hawknote, the SMS inbox for thoughts you would otherwise lose

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Hawknote accepts fragments by text, places them in a private feed, and lets users retrieve them through full-text search, hashtag filters, or dates. The service also parses written reminder requests and sends the resulting reminder by SMS. Its stated messaging boundary is unusually narrow: verification messages and scheduled reminders only, with typical use described as fewer than five messages per month; accounts are currently invitation-only.