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The Mailroom / Overview
Fifty messages, eight samples, one month

The Mailroom: what an operator sends to your account

A gambling account is talked to constantly, and almost none of it is an advert. This desk is about the messages an operator sends to an account: which kinds exist, what each one is allowed to change, what each has to contain, how it travels, when it has to arrive, and what can prove it did.

Desk spec
samples
8 invented
messages in 30 days
50
kinds of message
5
channels
5
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.
sent09:00:00 delivered09:00:01 read09:41:22 acted10:11:00

One receipt on one rail. The carrier takes 0.9 seconds to the second node; the reader takes 41 minutes 21 seconds to the third, and another 29 minutes 38 seconds to the fourth - 2,757 times the carrier's time. The open band between the last two nodes is the part of the journey no channel can speed up, and the post lane on the same message would put the second node two and a quarter days to the right and delete the third entirely.

kind of message email in-app push SMS post
a receiptmaymaynonono
marketingmaymaymaymaymay
a service notemaymaymaynono
a security alertmaynomaymayno
a legal noticemaynononomay
a statement on requestmaymaynonomay
a surveymaymaynonono
a win-back messagemaymaymaymayno

Forty cells, twenty-four permitted and sixteen refused, with one channel per kind treated as mandatory. The refusals are about length, permanence and evidence far more often than about cost: only two of the sixteen are refused because the channel charges for the message.

Direct answer

A gambling operator sends an account several different things, and they are not interchangeable: receipts of what happened, marketing, service notes, security alerts and legal notices. Only the marketing can be switched off - the rest continue because the account needs them, and the terms usually permit them without consent. A message is evidence and it can start a clock, but on its own it changes nothing: the change it announces comes from the terms or from the reader’s own action.

What the samples show

The desk's central figure is one month: fifty messages sent to one account in thirty days, of which twelve could be stopped and thirty-eight could not, across five kinds and five channels. Every figure anywhere on this site is derived from that month and from seven further samples, and the arithmetic is shown beside each one so a reader can re-derive it rather than take it.

Two findings do most of the work. First, the switch a reader reaches for - the one word at the foot of a message - covers twelve of those fifty messages and cannot touch the other thirty-eight, because a receipt is not a promotion and an operator is not required to ask before sending one. Second, the word "sent" in an operator's own log is not the same event as the message appearing on a phone: on the samples, arrival is evidenced for forty-eight of fifty and reading for twenty-one of fifty, and the two messages sent by post have no arrival evidence at all.

None of the samples describes a real company, a real account or a real message. They are eight invented sets of counts, channels and durations, defined on this page, and every other figure on the site is derived from them.

Eight samples

Sample A
The month

Fifty messages in thirty days, split by kind.

messages
50
marketing
12
the rest
38
Sample B
The switch

What one opt-out covers, and what continues without it.

stoppable
12 of 50
continues
38 of 50
share stopped
24.0%
Sample C
The channels

How the fifty were carried, and the one channel each kind must allow.

channels
5
kinds
5
mandatory
1 each
Sample D
The drag

The time each channel takes, from send to arrival.

email
0.9 s
post
2 d 6 h
ratio
216,000
Sample E
The record

What an operator's own message log keeps about each send.

fields
12
kept
9
not kept
3
Sample F
The proof

Sent, arrived and read, as three separate counts.

sent
50
arrival evidence
48
read evidence
21
Sample G
The address

Two addresses of record, and the day a change takes to bite.

addresses
2
change takes
24 h
caught
1.7 messages
Sample H
The cost

What the same message costs on five different channels.

email
0.0004
SMS
0.0410
post
0.6200

Two further samples are defined on the pages that use them: sample I on the notice windows and sample J on what a message can change on its own.

A month of messages

Sample A is the clearest place to start, because the split by kind is what decides whether the switch at the foot of a message does anything at all.

Sample A - fifty messages sent to one account in thirty days
KindSentShareSwitchable
receipts of what happened3060.0%no
marketing1224.0%yes
service notes48.0%no
security alerts24.0%no
legal notices24.0%no
one account, thirty days50100.0%12 of 50
sample A and B - what the switch covers messages in the month = 50 stoppable (marketing only) = 12 -> 12 / 50 = 24.0% continues after the opt-out = 50 - 12 = 38 -> 38 / 50 = 76.0% one message a day on average = 50 / 30 = 1.67 so switching everything off removes about 0.4 messages a day and leaves about 1.3 a day still arriving.

Sent, arrived, read

The second figure is the one readers most often assume away. Three different counts are routinely treated as one, and they are not the same event.

sample F - three counts, not one sent according to the operator's log = 50 -> 100% arrival evidenced = 48 -> 48 / 50 = 96.0% read evidenced = 21 -> 21 / 50 = 42.0% messages with no arrival evidence = 2, both sent by post so "we sent it" and "you received it" differ on 2 of 50 messages, and "you received it" and "you read it" differ on 27 of 48.
Every figure on this site is illustrative and derives from the eight samples defined on this page. No real company, operator, platform or person is quoted or described, and no message is reproduced. The desk explains how a mechanism works; it names no product, recommends nothing, rates nothing, and gives no selection and no prediction.

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