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The Mailroom / The five kinds
Receipts, offers, notes, alerts, notices

The five kinds of message an account receives

Almost every disagreement about a message starts with the same mistake: treating a receipt as an offer, or an offer as a notice. The five kinds do different things, and the switch at the foot of one of them does not reach the other four.

Desk spec
kinds
5
in the month
50
switchable kinds
1
unswitchable
38 of 50
the five kindsA receipt records something that already happened, marketing promotes something, a service note explains a state of the account, a security alert says something changed, and a legal notice is the message whose arrival is itself a step.
the two switchesOne stops marketing and nothing else - 12 of 50 messages on the samples. The other does not stop anything: it changes the channel the remaining 38 travel on, which changes how they arrive and what they prove.
the three countsSent is what the operator's log holds (50 of 50), arrived is what a delivery receipt shows (48 of 50), and read is what a read receipt shows (21 of 50). Three counts, routinely called one.
Direct answer

An account receives five kinds of message: receipts of what already happened, marketing, service notes about the account, security alerts, and legal notices. Only marketing can be switched off. A receipt records a fact, a service note explains one, an alert asks the reader to act, and a notice is the message whose arrival is itself part of a process.

The fault line is not importance, it is function

The five kinds are not ordered by how much they matter to a reader - a security alert matters more than an offer - but by what the message is doing. A receipt is a record of a completed event, so its job ends when it arrives. A notice is different in kind: the terms usually make its arrival a step in a process, which is why the same words can matter in a dispute where a receipt would not.

Sample A - the five kinds in one month of fifty messages
KindSentWhat it doesStoppableConsent needed
receipt30records an event that has already happenednono
marketing12promotes something the account may buyyesyes
service note4explains a state of the account or a requestnono
security alert2tells the reader something changed on the accountnono
legal notice2starts or ends a period the terms depend onnono
five kinds50four of the five cannot be switched off1 of 51 of 5
sample A - the split, and what it means for the switch receipts 30 / 50 = 60.0% marketing 12 / 50 = 24.0% service notes 4 / 50 = 8.0% alerts + notices 4 / 50 = 8.0% one kind of five can be switched off, carrying 12 of 50 messages four kinds of five cannot, carrying 38 of 50 ratio of unswitchable to switchable = 38 / 12 = 3.17 to 1

The kind is decided by function, not by wording

Operators write promotions that look like service notes and receipts that carry an offer, so the name on the message proves nothing. Two tests settle it, and both are arithmetic rather than opinion.

sample A - the two tests test 1 - does it ask for money? 12 of 50 do (marketing) test 2 - does it record or explain something the reader already did, or something already true of the account? 38 of 50 do overlap between the tests = 0 of 50 so every message in the sample is exactly one of the two, and the phrase "you have won" makes no difference: a receipt of a prize is still a receipt, and a promotion that says "your account is waiting" is still marketing.

Why a receipt is not a promotion

The distinction has a practical consequence, and it is the reason this page comes before the switches: a reader who replies to a receipt asking to be left alone has asked for the wrong thing. The receipt continues, because the account cannot be run without a record of what was done to it, and the operator is usually not required to ask first.

  • Ask what the message is doing, not what it calls itself: recording, promoting, explaining, alerting or notifying.
  • Assume a receipt, a service note, an alert and a legal notice will continue after any marketing opt-out.
  • Treat an offer that borrows a receipt's shape as marketing, and check the footer of the message for the switch.
  • Keep the alert and notice messages: they are the ones that date a change to the account.
  • Do not read "you have won" or "your account" as a kind of message - both appear in all five.

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