diff --git a/DOCS-changelog.md b/DOCS-changelog.md
index 35a9e57..a639899 100644
--- a/DOCS-changelog.md
+++ b/DOCS-changelog.md
@@ -102,6 +102,8 @@ papież nr 15 z 267, pontyfikat 199-217
   wieczorny post pokazuje wreszcie ten dzień, który właśnie mijał
 - licznik zamyka się o 21:37, więc to, co napiszecie później, wpada do jutra;
   post sam to mówi, żeby liczba nie udawała całej doby
+- **jedna wiadomość, nie kilka**: dzień, tydzień, miesiąc i to, co bot
+  przegapił, są blokami w jednym poście, a nie osobnymi powiadomieniami
 - dzień, którego bot przegapił (bo go nie było o 21:37), nadal zostanie
   wysłany później — nic nie ginie
 
diff --git a/signal_bot/bot.py b/signal_bot/bot.py
index 48455a5..c6a4da8 100644
--- a/signal_bot/bot.py
+++ b/signal_bot/bot.py
@@ -26,16 +26,10 @@ from signal_bot.pack_load import load as load_pack
 from signal_bot.popes_command import register_pope_command
 from signal_bot.portraits import PortraitCache
 from signal_bot.registry import CommandRegistry
-from signal_bot.stats import curiosities, periods
-from signal_bot.stats.backfill import backfilled_day
+from signal_bot.reporting import compose
+from signal_bot.stats import periods
 from signal_bot.stats.commands import register_stats_commands
-from signal_bot.stats.facts import gather
-from signal_bot.stats.highlights import SLOTS, select
-from signal_bot.stats.nightly import closing_periods, days_to_report, mark_reported
-from signal_bot.stats.queries_day import day_rows, day_totals, with_silent
-from signal_bot.stats.queries_period import Trend, period_rows, total_for
-from signal_bot.stats.render_day import DayView, render_day
-from signal_bot.stats.render_period import render_period
+from signal_bot.stats.nightly import days_to_report, mark_reported
 from signal_bot.versioning import POPE
 
 if TYPE_CHECKING:
@@ -84,7 +78,7 @@ class Bot:
     clock: Clock = now_local
 
     async def publish_report(self) -> None:
-        """Post each group's report for today, plus any day still owed.
+        """Post each group **one** message: today, plus anything still owed.
 
         Today, because 21:37 is when the group expects to read its own
         numbers; a post at 21:37 about yesterday is a day late to everyone
@@ -93,9 +87,12 @@ class Bot:
         because a total that quietly omits three hours is worse than one that
         admits to it.
 
-        Everything that makes a late day recoverable stays: the day is marked
-        per group, so it cannot post twice, and days_to_report still yields
-        every day the bot was down for, oldest first.
+        One message, always. A run can have several things to say -- a day
+        the bot was down for, the day it is on now, and the week or month
+        that ended inside them -- and saying each in its own post turns one
+        evening into four notifications. They are blocks in one message
+        instead, which is also what makes the send atomic: either the group
+        got the lot, or nothing is marked and the next run says it all again.
 
         Nothing is deleted afterwards. Each group is isolated on purpose: one
         group refusing the report -- the bot removed from it, a transient send
@@ -103,81 +100,39 @@ class Bot:
         """
         latest = periods.today(self.clock())
         for group_id in self.directory.groups:
-            for day in days_to_report(self.store, group_id, latest):
-                if not await self._report_one(group_id, day):
-                    # Left unmarked on purpose, so the next run retries it
-                    # rather than skipping the day forever.
-                    break
-                mark_reported(self.store, group_id, day)
-                await self._report_closing(group_id, day)
+            await self._report_group(group_id, latest)
 
-    async def _report_one(self, group_id: str, day: str) -> bool:
-        """Post one group's report for one day. False means try again later."""
-        rows = day_rows(self.store.events, group_id, day)
-        if not rows:
-            # Settled, not pending. The bot is in every group it was ever
-            # added to, so posting "nobody spoke" would mean a nightly ping
-            # into every quiet group, forever.
-            logger.info("no messages in %s on %s; not posting a report", group_id, day)
-            return True
-        named = self.store.events.roster(group_id, self.directory.member_identities(group_id))
-        with_zeros = with_silent(rows, [(p.uuid, p.display_name) for p in named])
-        backfilled = backfilled_day(self.store, group_id)
-        facts = gather(self.store.events, group_id, day, with_zeros, exclude=backfilled)
-        picks = select(curiosities.for_day(facts), SLOTS)
-        text = render_day(
-            day,
-            with_zeros,
-            day_totals(with_zeros),
-            DayView(
-                since=self.store.events.first_day(group_id),
-                approximate=backfilled == day,
-                highlights=tuple(pick.text for pick in picks),
-                # Only for a day that is still running. A day caught up after
-                # an outage is complete, and telling the group its count
-                # stopped at 21:37 would be a lie about a finished day.
-                closed_at=self._closing_time(day),
-            ),
+    async def _report_group(self, group_id: str, latest: str) -> None:
+        """Say everything one group is owed, in one message or not at all."""
+        days = days_to_report(self.store, group_id, latest)
+        if not days:
+            return
+        now = self.clock()
+        text = compose(
+            self.store,
+            self.directory,
+            group_id,
+            days,
+            today=periods.today(now),
+            # Off the clock rather than off REPORT_HOUR: the scheduled run
+            # fires at the configured minute and so says exactly that, while
+            # a run started by hand at some other hour tells the truth
+            # instead of repeating a time nobody waited for.
+            closed_at=now.strftime("%H:%M"),
         )
-        try:
-            await self.transport.send_text(text, group_id)
-        except Exception:
-            logger.exception("daily report failed for group %s", group_id)
-            return False
-        return True
-
-    def _closing_time(self, day: str) -> str | None:
-        """The "HH:MM" a still-open day was counted up to, or None."""
-        if day != periods.today(self.clock()):
-            return None
-        return f"{self.config.report_hour:02d}:{self.config.report_minute:02d}"
-
-    async def _report_closing(self, group_id: str, day: str) -> None:
-        """Post the week, month or year that ended with this day, if any.
-
-        Best effort and deliberately after the day has been marked: a failed
-        weekly summary must not make the bot re-post the daily one tomorrow.
-        """
-        for period in closing_periods(day):
-            before = periods.previous(period)
-            trend = Trend(
-                now=total_for(self.store.events, group_id, period.start, period.end),
-                before=total_for(self.store.events, group_id, before.start, before.end),
-            )
-            rows = period_rows(self.store.events, group_id, period)
-            if not rows:
-                continue
-            text = render_period(
-                period,
-                rows,
-                trend,
-                since=self.store.events.first_day(group_id),
-                podium=period.kind != "week",
-            )
+        if text:
             try:
                 await self.transport.send_text(text, group_id)
             except Exception:
-                logger.exception("%s summary failed for group %s", period.kind, group_id)
+                # Nothing is marked, so the next run repeats the whole thing
+                # rather than losing the days that were inside this message.
+                logger.exception("report failed for group %s", group_id)
+                return
+        # Marked even when there was nothing to say: a day nobody spoke on is
+        # settled, not pending, and leaving it unmarked would make the bot
+        # reconsider it every night forever.
+        for day in days:
+            mark_reported(self.store, group_id, day)
 
     async def announce_release(self) -> None:
         """Tell every watched group about a version it has not seen yet."""
diff --git a/signal_bot/reporting.py b/signal_bot/reporting.py
new file mode 100644
index 0000000..fb746b7
--- /dev/null
+++ b/signal_bot/reporting.py
@@ -0,0 +1,133 @@
+# Copyright (c) 2026 Krzysztof Rudnicki. MIT licence.
+"""Composing the evening report: what it says, but never the sending of it.
+
+Split out of bot.py at the 250-line cap, and the seam is worth having on its
+own terms -- everything here is pure, so "what would the group be told?" is a
+question that can be answered without a transport, a group, or a send.
+
+One run can have several things to say: a day the bot was down for, the day
+it is on now, and the week or month that ended inside them. They are blocks
+in one message rather than a post each, because four notifications in one
+evening is how a daily tally becomes something people mute.
+"""
+
+from __future__ import annotations
+
+import logging
+from typing import TYPE_CHECKING, Final
+
+from signal_bot.stats import curiosities, periods
+from signal_bot.stats.backfill import backfilled_day
+from signal_bot.stats.facts import gather
+from signal_bot.stats.highlights import SLOTS, select
+from signal_bot.stats.nightly import closing_periods
+from signal_bot.stats.queries_day import day_rows, day_totals, with_silent
+from signal_bot.stats.queries_period import Trend, period_rows, total_for
+from signal_bot.stats.render_day import DayView, render_day
+from signal_bot.stats.render_period import render_period
+
+if TYPE_CHECKING:
+    from collections.abc import Sequence
+
+    from signal_bot.discovery import GroupDirectory
+    from signal_bot.store import Store
+
+logger = logging.getLogger(__name__)
+
+# What separates the day, the week and any caught-up day inside one report.
+# A blank line and a rule, because Signal renders no markdown and two blocks
+# run straight into each other without one.
+BLOCK_SEPARATOR: Final = "\n\n———\n\n"
+
+
+def compose(
+    store: Store,
+    directory: GroupDirectory,
+    group_id: str,
+    days: Sequence[str],
+    today: str,
+    closed_at: str | None,
+) -> str:
+    """The whole message for one group, or "" when there is nothing to say.
+
+    Args:
+        store: The open database.
+        directory: Used for the member roster, so people who said nothing are
+            still named.
+        group_id: The group being reported on.
+        days: Days to cover, oldest first.
+        today: The day that is still running, from the caller's clock. Passed
+            rather than read here: one injected clock decides what "today"
+            means for the whole bot, and a second reading of the real one
+            could disagree with it across midnight.
+        closed_at: "HH:MM" that still-running day was counted up to.
+    """
+    blocks: list[str] = []
+    for day in days:
+        block = day_block(store, directory, group_id, day, closed_at if day == today else None)
+        if block:
+            blocks.append(block)
+        blocks.extend(closing_blocks(store, group_id, day))
+    return BLOCK_SEPARATOR.join(blocks)
+
+
+def day_block(
+    store: Store,
+    directory: GroupDirectory,
+    group_id: str,
+    day: str,
+    closed_at: str | None,
+) -> str | None:
+    """One day as the group reads it, or None if nobody spoke that day."""
+    rows = day_rows(store.events, group_id, day)
+    if not rows:
+        # The bot is in every group it was ever added to, so "nobody spoke"
+        # would be a nightly ping into every quiet group, forever.
+        logger.info("no messages in %s on %s; not reporting on it", group_id, day)
+        return None
+    named = store.events.roster(group_id, directory.member_identities(group_id))
+    with_zeros = with_silent(rows, [(person.uuid, person.display_name) for person in named])
+    backfilled = backfilled_day(store, group_id)
+    facts = gather(store.events, group_id, day, with_zeros, exclude=backfilled)
+    picks = select(curiosities.for_day(facts), SLOTS)
+    return render_day(
+        day,
+        with_zeros,
+        day_totals(with_zeros),
+        DayView(
+            since=store.events.first_day(group_id),
+            approximate=backfilled == day,
+            highlights=tuple(pick.text for pick in picks),
+            # Only for a day that is still running: telling the group a
+            # finished day's count "stopped at 21:37" would be a lie.
+            closed_at=closed_at,
+        ),
+    )
+
+
+def closing_blocks(store: Store, group_id: str, day: str) -> list[str]:
+    """The week, month or year that ended with this day, if any.
+
+    Rendered rather than posted: they join the day in one message, so a
+    Sunday evening is one notification and not two.
+    """
+    blocks: list[str] = []
+    for period in closing_periods(day):
+        rows = period_rows(store.events, group_id, period)
+        if not rows:
+            continue
+        before = periods.previous(period)
+        trend = Trend(
+            now=total_for(store.events, group_id, period.start, period.end),
+            before=total_for(store.events, group_id, before.start, before.end),
+        )
+        blocks.append(
+            render_period(
+                period,
+                rows,
+                trend,
+                since=store.events.first_day(group_id),
+                podium=period.kind != "week",
+            )
+        )
+    return blocks
diff --git a/tests/test_bot_catchup.py b/tests/test_bot_catchup.py
index f92929d..b96f9c9 100644
--- a/tests/test_bot_catchup.py
+++ b/tests/test_bot_catchup.py
@@ -12,7 +12,6 @@ from signal_bot.bot import Bot, build_bot
 from signal_bot.liveness import Liveness
 from signal_bot.stats.nightly import LAST_REPORTED_KEY, mark_reported
 from signal_bot.stats.periods import WARSAW
-from signal_bot.transport_fake import FakeTransport
 from tests.conftest import WATCHED_GROUP, mock_client
 from tests.test_bot_report import TODAY, YESTERDAY, RefusingTransport, _bot, wrote
 
@@ -20,6 +19,7 @@ if TYPE_CHECKING:
     from signal_bot.config import Config
     from signal_bot.discovery import GroupDirectory
     from signal_bot.store import Store
+    from signal_bot.transport_fake import FakeTransport
 
 
 def _at(
@@ -48,15 +48,20 @@ async def test_a_missed_day_is_posted_when_the_bot_returns(
 
     await _bot(config, store, transport, directory).publish_report()
 
-    # Five, not three: catching up on the days also catches up the periods
-    # that closed inside them. The 30th was a Sunday and the 31st ended
-    # August, so each is followed by its own summary.
-    assert len(transport.texts) == 5
-    assert "30 sierpnia" in transport.texts[0]
-    assert "tydzień 35" in transport.texts[1]
-    assert "31 sierpnia" in transport.texts[2]
-    assert "sierpień 2026" in transport.texts[3]
-    assert "1 września" in transport.texts[4]
+    # One message, five blocks. Catching up on the days also catches up the
+    # periods that closed inside them -- the 30th was a Sunday and the 31st
+    # ended August -- and posting each separately would turn one evening
+    # into five notifications.
+    assert len(transport.texts) == 1
+    report = transport.texts[0]
+    # Whole headers, not bare dates: a curiosity line inside one day's block
+    # can name another day ("rekord życiowy (poprzedni 1, 31 sierpnia)"), so
+    # a substring search finds the wrong occurrence and the order looks wrong.
+    sunday = report.index("Niedziela, 30 sierpnia")
+    week = report.index("tydzień 35")
+    monday = report.index("Poniedziałek, 31 sierpnia")
+    assert sunday < week < monday < report.index("sierpień 2026")
+    assert "Wtorek, 1 września" in report
     assert store.meta(WATCHED_GROUP, LAST_REPORTED_KEY) == TODAY
 
 
@@ -113,9 +118,9 @@ async def test_a_sunday_also_posts_the_week(
 
     await _at(config, store, transport, directory, sunday).publish_report()
 
-    assert len(transport.texts) == 2
+    assert len(transport.texts) == 1
     assert "Niedziela, 30 sierpnia" in transport.texts[0]
-    assert "tydzień 35" in transport.texts[1]
+    assert "tydzień 35" in transport.texts[0]
 
 
 async def test_a_saturday_closes_nothing(
@@ -140,23 +145,21 @@ async def test_an_ordinary_day_posts_only_the_day(
     assert len(transport.texts) == 1
 
 
-async def test_a_failing_weekly_summary_does_not_unmark_the_day(
+async def test_a_refused_report_marks_nothing_at_all(
     config: Config, store: Store, directory: GroupDirectory
 ) -> None:
-    """The day was posted; retrying it tomorrow would repeat it."""
+    """One message means one outcome: the group got all of it, or none.
+
+    The day used to be marked before its weekly summary was even attempted,
+    so a summary that failed was simply lost. With both inside one send there
+    is no half-state to reason about -- the next run says the whole thing.
+    """
     sunday = "2026-08-30"
     wrote(store, WATCHED_GROUP, "u1", "Alice", 6, day=sunday)
     mark_reported(store, WATCHED_GROUP, "2026-08-29")
+    transport = RefusingTransport(refuses=WATCHED_GROUP)
 
-    class RefuseSecond(FakeTransport):
-        """Lets the day through and rejects everything after it."""
-
-        async def send_text(self, text: str, recipient: str) -> None:
-            if self.sent:
-                msg = "no"
-                raise RuntimeError(msg)
-            await super().send_text(text, recipient)
-
-    transport = RefuseSecond()
     await _at(config, store, transport, directory, sunday).publish_report()
-    assert store.meta(WATCHED_GROUP, LAST_REPORTED_KEY) == sunday
+
+    assert transport.texts == []
+    assert store.meta(WATCHED_GROUP, LAST_REPORTED_KEY) == "2026-08-29"
diff --git a/tool/tagger.html b/tool/tagger.html
index 9c30526..42b7f02 100644
--- a/tool/tagger.html
+++ b/tool/tagger.html
@@ -31,6 +31,9 @@
   .hint { color: var(--dim); font-size: 14px; }
   .err { color: #f7768e; }
   label.group { display: block; padding: 4px 0; }
+  pre.sample { background: #101214; border: 1px solid #33363d; border-radius: 8px;
+               padding: 12px; overflow-x: auto; }
+  .dim { color: #6b7280; }
 </style>
 </head>
 <body>
@@ -38,12 +41,15 @@
   <div id="setup" hidden>
     <h1>Kto jest w tej paczce?</h1>
     <p class="hint">
-      Jedna osoba na linię: nazwy komend po przecinku, bez wykrzyknika.<br>
-      <code>celina, cela</code><br>
-      Kombinacje po znaku <code>=</code>: <code>oboje = ala + marek</code>
-      (zdjęcie z obojgiem) albo <code>ktokolwiek = ala | marek</code>
-      (losowo jedno z nich).
+      <b>Jedna osoba na linię</b> — Enter po każdej. Bez wykrzyknika.
+      Przecinek to <b>inna nazwa tej samej osoby</b>, nie następna osoba.
     </p>
+    <pre class="hint sample">marek
+ala
+celina, cela        <span class="dim">← jedna osoba, dwie nazwy</span>
+iga
+oboje = ala + marek    <span class="dim">← zdjęcie, na którym są oboje</span>
+ktokolwiek = ala | marek   <span class="dim">← losowo jedno z nich</span></pre>
     <textarea id="names" spellcheck="false"></textarea>
     <h1>W której grupie działają?</h1>
     <div id="groups" class="hint">szukam grup…</div>
@@ -54,7 +60,7 @@
   <div id="tagger" hidden>
     <div class="bar">
       <h1 id="progress"></h1>
-      <span class="hint">1–9 = osoba, → dalej, ← wstecz</span>
+      <span class="hint">1–9 (0 = dziesiąta) = osoba, → dalej, ← wstecz</span>
     </div>
     <div class="stage" id="stage"></div>
     <div class="people" id="people"></div>
@@ -81,11 +87,15 @@ function parseSetup(text) {
   const byName = new Map();
   for (const raw of text.split("\n").map((l) => l.trim()).filter(Boolean)) {
     if (raw.includes("=")) { continue; }
-    const triggers = raw.split(",").map((t) => "!" + t.trim().replace(/^!/, "")).filter((t) => t.length > 1);
+    const triggers = raw.split(",")
+      .map((t) => "!" + t.trim().replace(/^!/, ""))
+      .filter((t) => t.length > 1);
     if (!triggers.length) { continue; }
     const k = `p${people.length + 1}`;
     people.push({key: k, triggers});
-    byName.set(triggers[0].slice(1), k);
+    // Every alias, not just the first: a combination may name a person by
+    // whichever spelling its author remembers.
+    for (const trigger of triggers) { byName.set(trigger.slice(1), k); }
   }
   let n = 1;
   for (const raw of text.split("\n").map((l) => l.trim()).filter(Boolean)) {
@@ -93,10 +103,15 @@ function parseSetup(text) {
     const [left, right] = raw.split("=");
     const every = right.includes("+");
     const parts = right.split(every ? "+" : "|").map((p) => p.trim().replace(/^!/, ""));
-    const keys = parts.map((p) => byName.get(p)).filter(Boolean);
-    if (keys.length !== parts.length) { throw new Error(`nie znam kogoś z: ${right.trim()}`); }
-    const triggers = left.split(",").map((t) => "!" + t.trim().replace(/^!/, ""));
-    combos.push(every ? {key: `c${n}`, triggers, all_of: keys} : {key: `c${n}`, triggers, any_of: keys});
+    const unknown = parts.filter((p) => !byName.has(p));
+    if (unknown.length) { throw new Error(`nie znam: ${unknown.join(", ")}`); }
+    const keys = parts.map((p) => byName.get(p));
+    const triggers = left.split(",")
+      .map((t) => "!" + t.trim().replace(/^!/, ""))
+      .filter((t) => t.length > 1);
+    combos.push(every
+      ? {key: `c${n}`, triggers, all_of: keys}
+      : {key: `c${n}`, triggers, any_of: keys});
     n += 1;
   }
   return {people, combos};
@@ -137,7 +152,7 @@ function draw() {
     : `<img src="/media/${at}" alt="">`;
   document.getElementById("people").innerHTML = entries().map((p, i) => `
     <div class="person ${item.keys.includes(p.key) ? "on" : ""}" data-key="${p.key}">
-      ${i + 1}. ${p.triggers[0].slice(1)}
+      ${i === 9 ? 0 : i + 1}. ${p.triggers[0].slice(1)}
     </div>`).join("");
   for (const node of document.querySelectorAll(".person")) {
     node.onclick = () => toggle(node.dataset.key);
@@ -162,8 +177,10 @@ document.addEventListener("keydown", (event) => {
   if (document.getElementById("tagger").hidden) { return; }
   if (event.key === "ArrowRight" || event.key === "Enter") { move(1); }
   else if (event.key === "ArrowLeft") { move(-1); }
-  else if (/^[1-9]$/.test(event.key)) {
-    const person = entries()[Number(event.key) - 1];
+  else if (/^[0-9]$/.test(event.key)) {
+    // 0 is the tenth, so a pack of ten is still entirely keyboard-driven.
+    const index = event.key === "0" ? 9 : Number(event.key) - 1;
+    const person = entries()[index];
     if (person) { toggle(person.key); }
   }
 });