diff --git a/messages/de.json b/messages/de.json
index 1c5adfc..f8bf6c3 100644
--- a/messages/de.json
+++ b/messages/de.json
@@ -287,7 +287,7 @@
 			"typeInUse": "Diese Art wird noch benutzt. Nimm stattdessen den Haken bei Aktiv heraus.",
 			"slackSaved": "Die Slack-Einstellungen sind gespeichert.",
 			"reportSent": "Der Bericht ist raus.",
-			"reportEmpty": "In den letzten sieben Tagen wurde nichts veröffentlicht, deshalb ging keine Nachricht raus.",
+			"reportEmpty": "Seit dem letzten Versand ist nichts dazugekommen, deshalb ging keine Nachricht raus.",
 			"reportNoWebhook": "Es ist kein Webhook hinterlegt.",
 			"reportRejected": "Slack hat die Nachricht abgelehnt.",
 			"messageDeleted": "Die Nachricht ist in Slack gelöscht.",
@@ -300,7 +300,8 @@
 			"runNoChannel": "Es ist kein Kanal hinterlegt.",
 			"runNotFound": "Im Kanal war keine passende Nachricht zu finden. Braucht der Bot noch das Recht channels:history?",
 			"channelRequired": "Zum Bot-Token gehört ein Kanal, sonst weiß Logbuch nicht, wohin.",
-			"slackSaid": "Slack sagt: {detail}"
+			"slackSaid": "Slack sagt: {detail}",
+			"windowReset": "Der Zeitraum ist zurückgesetzt. Der nächste Bericht umfasst wieder die letzten sieben Tage."
 		},
 		"errors": {
 			"nameRequired": "Trag einen Namen ein.",
@@ -775,7 +776,9 @@
 			"pathNone": "Noch kein Weg hinterlegt, es geht nichts raus.",
 			"messageNoToken": "Ohne Bot-Token nicht löschbar",
 			"lastSent": "Zuletzt verschickt am {when}. Der nächste Bericht beginnt dort und enthält nur, was seitdem erschienen ist.",
-			"neverSent": "Noch nichts verschickt. Der erste Bericht umfasst die letzten sieben Tage."
+			"neverSent": "Noch nichts verschickt. Der erste Bericht umfasst die letzten sieben Tage.",
+			"resetWindow": "Zeitraum zurücksetzen",
+			"resetting": "Wird zurückgesetzt"
 		}
 	},
 	"filter": {
diff --git a/messages/en.json b/messages/en.json
index 5048748..7e8a064 100644
--- a/messages/en.json
+++ b/messages/en.json
@@ -287,7 +287,7 @@
 			"typeInUse": "This type is still in use. Clear the active checkbox instead.",
 			"slackSaved": "The Slack settings are saved.",
 			"reportSent": "The digest is out.",
-			"reportEmpty": "Nothing was published in the last seven days, so no message went out.",
+			"reportEmpty": "Nothing appeared since the last digest, so no message went out.",
 			"reportNoWebhook": "No webhook is stored.",
 			"reportRejected": "Slack rejected the message.",
 			"messageDeleted": "The message is deleted in Slack.",
@@ -300,7 +300,8 @@
 			"runNoChannel": "No channel is stored.",
 			"runNotFound": "No matching message found in the channel. Does the bot still need channels:history?",
 			"channelRequired": "A bot token needs a channel, otherwise Logbuch has no target.",
-			"slackSaid": "Slack says: {detail}"
+			"slackSaid": "Slack says: {detail}",
+			"windowReset": "The window is reset. The next digest covers the last seven days again."
 		},
 		"errors": {
 			"nameRequired": "Enter a name.",
@@ -775,7 +776,9 @@
 			"pathNone": "No route stored yet, nothing goes out.",
 			"messageNoToken": "Not deletable without a bot token",
 			"lastSent": "Last sent on {when}. The next digest starts there and only carries what appeared since.",
-			"neverSent": "Nothing sent yet. The first digest covers the last seven days."
+			"neverSent": "Nothing sent yet. The first digest covers the last seven days.",
+			"resetWindow": "Reset the window",
+			"resetting": "Resetting"
 		}
 	},
 	"filter": {
diff --git a/src/components/admin/SlackForm.tsx b/src/components/admin/SlackForm.tsx
index 93ead0d..5aa369f 100644
--- a/src/components/admin/SlackForm.tsx
+++ b/src/components/admin/SlackForm.tsx
@@ -2,12 +2,12 @@
 
 import { useActionState, useState } from 'react'
 import { useTranslations } from 'next-intl'
-import { TbSend } from 'react-icons/tb'
+import { TbRotate2, TbSend } from 'react-icons/tb'
 import { AdminField } from './AdminField'
 import { AdminFormMessage } from './AdminFormMessage'
 import { AdminSubmit } from './AdminSubmit'
 import { checkboxClass, hintClass, inputClass, labelClass } from './styles'
-import { saveSlackSettings, sendWeeklyReportNow } from '~/lib/admin-actions'
+import { resetReportWindow, saveSlackSettings, sendWeeklyReportNow } from '~/lib/admin-actions'
 import { emptyAdminFormState } from '~/lib/admin-forms'
 
 export type SlackFormProps = {
@@ -22,6 +22,7 @@ export function SlackForm({ hasWebhook, hasBot, channel, fromEnv, includeInterna
 	const t = useTranslations('admin.settings')
 	const [state, formAction] = useActionState(saveSlackSettings, emptyAdminFormState)
 	const [report, reportAction] = useActionState(sendWeeklyReportNow, emptyAdminFormState)
+	const [reset, resetAction] = useActionState(resetReportWindow, emptyAdminFormState)
 	const [replace, setReplace] = useState(!hasWebhook)
 	const [replaceToken, setReplaceToken] = useState(!hasBot)
 	const path = hasBot ? 'pathBot' : hasWebhook ? 'pathWebhook' : 'pathNone'
@@ -132,15 +133,23 @@ export function SlackForm({ hasWebhook, hasBot, channel, fromEnv, includeInterna
 				<AdminSubmit pendingLabel={t('saving')}>{t('save')}</AdminSubmit>
 			</form>
 
-			<form action={reportAction} className="flex flex-col gap-3">
+			<div className="flex flex-col gap-3">
 				<AdminFormMessage state={report} />
+				<AdminFormMessage state={reset} />
 				<span className="flex flex-wrap items-center gap-4">
-					<AdminSubmit quiet pendingLabel={t('sending')} icon={<TbSend className="size-4" />}>
-						{t('sendNow')}
-					</AdminSubmit>
+					<form action={reportAction}>
+						<AdminSubmit quiet pendingLabel={t('sending')} icon={<TbSend className="size-4" />}>
+							{t('sendNow')}
+						</AdminSubmit>
+					</form>
+					<form action={resetAction}>
+						<AdminSubmit quiet pendingLabel={t('resetting')} icon={<TbRotate2 className="size-4" />}>
+							{t('resetWindow')}
+						</AdminSubmit>
+					</form>
 					<span className={hintClass}>{t('hints.sendNow')}</span>
 				</span>
-			</form>
+			</div>
 		</div>
 	)
 }
diff --git a/src/lib/admin-actions.ts b/src/lib/admin-actions.ts
index 4f53877..22b5d24 100644
--- a/src/lib/admin-actions.ts
+++ b/src/lib/admin-actions.ts
@@ -6,7 +6,7 @@ import { performSaveBrand } from './admin-brands'
 import { performCreateClient, performRevokeClient } from './admin-clients'
 import { performDeletePostType, performSavePostType } from './admin-post-types'
 import { performSaveProject } from './admin-projects'
-import { performDeleteMessage, performSaveSlack, performSendReport } from './admin-settings'
+import { performDeleteMessage, performResetWindow, performSaveSlack, performSendReport } from './admin-settings'
 import { performGrantRole, performRevokeRole, performSetUserAdmin } from './admin-users'
 import type { AdminFormState } from './admin-forms'
 import {
@@ -168,3 +168,12 @@ export async function deleteSlackMessage(_state: AdminFormState, formData: FormD
 
 	return result
 }
+
+export async function resetReportWindow(_state: AdminFormState): Promise<AdminFormState> {
+	const viewer = await requireAdmin()
+	const result = await performResetWindow(viewer)
+
+	revalidatePath(adminSettingsPath)
+
+	return result
+}
diff --git a/src/lib/admin-settings.ts b/src/lib/admin-settings.ts
index 1af926d..ba61eb3 100644
--- a/src/lib/admin-settings.ts
+++ b/src/lib/admin-settings.ts
@@ -187,3 +187,18 @@ export async function performDeleteMessage(viewer: Viewer, formData: FormData):
 
 	return { status: 'ok', message: 'messageDeleted' }
 }
+
+export async function performResetWindow(viewer: Viewer): Promise<AdminFormState> {
+	await clearSetting('slack.lastSentAt')
+
+	await recordAudit({
+		actorId: viewer.id,
+		actorLabel: viewer.email,
+		action: 'settings.reportReset',
+		entity: 'setting',
+		entityId: 'slack',
+		data: {},
+	})
+
+	return { status: 'ok', message: 'windowReset' }
+}
diff --git a/src/lib/slack.ts b/src/lib/slack.ts
index e18efc7..6150cfd 100644
--- a/src/lib/slack.ts
+++ b/src/lib/slack.ts
@@ -69,10 +69,12 @@ export async function sendToSlack(message: SlackMessage, target: SlackTarget): P
 	return { ok: true, sent: { channel: null, messageTs: null } }
 }
 
+const goneErrors = ['message_not_found', 'already_deleted']
+
 export async function deleteFromSlack(token: string, channel: string, messageTs: string): Promise<SlackResult> {
 	const { ok, data } = await callApi(token, 'chat.delete', { channel, ts: messageTs })
 
-	if (!ok) {
+	if (!ok && !goneErrors.includes(String(data.error))) {
 		return { ok: false, detail: String(data.error ?? 'unknown_error') }
 	}