https://hbr.org/2016/11/how-to-write-email-with-military-precision
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Subjects with keywords
- ACTION – Compulsory for the recipient to take some action
- SIGN – Requires the signature of the recipient
- INFO – Informational purposes only, no action required
- DECISION – Requires a decision by the recipient
- REQUEST – Seeks permission or approval by the recipient
- COORD – Coordination by or with the recipient is needed
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Bottom Line Up Front (BLUF)
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Be economical.
Use active voice, which puts nouns ahead of verbs. "i-234234151ab went down at 8:38am"