diff --git a/bot/access.go b/bot/access.go
index f54f66d..18208c3 100644
--- a/bot/access.go
+++ b/bot/access.go
@@ -1,41 +1,40 @@
 package bot
 
 import (
-	"fmt"
+	"context"
 
 	"maunium.net/go/mautrix/id"
 
 	"gitlab.com/etke.cc/postmoogle/utils"
 )
 
-type accessCheckerFunc func(id.UserID, id.RoomID) (bool, error)
-
-func (b *Bot) allowAnyone(actorID id.UserID, targetRoomID id.RoomID) (bool, error) {
-	return true, nil
+func (b *Bot) allowAnyone(actorID id.UserID, targetRoomID id.RoomID) bool {
+	return true
 }
 
-func (b *Bot) allowOwner(actorID id.UserID, targetRoomID id.RoomID) (bool, error) {
+func (b *Bot) allowOwner(actorID id.UserID, targetRoomID id.RoomID) bool {
 	if !utils.Match(actorID.String(), b.allowedUsers) {
-		return false, nil
+		return false
 	}
 
 	if b.noowner {
-		return true, nil
+		return true
 	}
 
 	cfg, err := b.getSettings(targetRoomID)
 	if err != nil {
-		return false, fmt.Errorf("failed to retrieve settings: %v", err)
+		b.Error(context.Background(), targetRoomID, "failed to retrieve settings: %v", err)
+		return false
 	}
 
 	owner := cfg.Owner()
 	if owner == "" {
-		return true, nil
+		return true
 	}
 
-	return owner == actorID.String(), nil
+	return owner == actorID.String()
 }
 
-func (b *Bot) allowAdmin(actorID id.UserID, targetRoomID id.RoomID) (bool, error) {
-	return utils.Match(actorID.String(), b.allowedAdmins), nil
+func (b *Bot) allowAdmin(actorID id.UserID, targetRoomID id.RoomID) bool {
+	return utils.Match(actorID.String(), b.allowedAdmins)
 }
diff --git a/bot/admin_command.go b/bot/admin_command.go
deleted file mode 100644
index eff4bf4..0000000
--- a/bot/admin_command.go
+++ /dev/null
@@ -1,39 +0,0 @@
-package bot
-
-import (
-	"context"
-	"fmt"
-	"strings"
-
-	"maunium.net/go/mautrix/id"
-)
-
-func (b *Bot) sendMailboxes(ctx context.Context) {
-	evt := eventFromContext(ctx)
-
-	mailboxes := map[string]id.RoomID{}
-
-	b.rooms.Range(func(mailbox any, roomID any) bool {
-		mailboxes[mailbox.(string)] = roomID.(id.RoomID)
-		return true
-	})
-
-	if len(mailboxes) == 0 {
-		b.Notice(ctx, evt.RoomID, "No mailboxes are managed by the bot so far, kupo!")
-		return
-	}
-
-	var msg strings.Builder
-	msg.WriteString("The following mailboxes are managed by the bot:\n")
-	for mailbox, roomID := range mailboxes {
-		email := fmt.Sprintf("%s@%s", mailbox, b.domain)
-		msg.WriteString("* `")
-		msg.WriteString(email)
-		msg.WriteString("` - `")
-		msg.WriteString(roomID.String())
-		msg.WriteString("`")
-		msg.WriteString("\n")
-	}
-
-	b.Notice(ctx, evt.RoomID, msg.String())
-}
diff --git a/bot/bot.go b/bot/bot.go
index bcb7cb1..7c6128d 100644
--- a/bot/bot.go
+++ b/bot/bot.go
@@ -60,19 +60,21 @@ func New(
 // Error message to the log and matrix room
 func (b *Bot) Error(ctx context.Context, roomID id.RoomID, message string, args ...interface{}) {
 	b.log.Error(message, args...)
+	err := fmt.Errorf(message, args...)
 
-	sentry.GetHubFromContext(ctx).CaptureException(fmt.Errorf(message, args...))
+	sentry.GetHubFromContext(ctx).CaptureException(err)
 	if roomID != "" {
-		// nolint // if something goes wrong here nobody can help...
-		b.lp.Send(roomID, &event.MessageEventContent{
-			MsgType: event.MsgNotice,
-			Body:    "ERROR: " + fmt.Sprintf(message, args...),
-		})
+		b.SendError(ctx, roomID, message)
 	}
 }
 
-// Notice sends a notice message to the matrix room
-func (b *Bot) Notice(ctx context.Context, roomID id.RoomID, message string) {
+// SendError sends an error message to the matrix room
+func (b *Bot) SendError(ctx context.Context, roomID id.RoomID, message string) {
+	b.SendNotice(ctx, roomID, "ERROR: "+message)
+}
+
+// SendNotice sends a notice message to the matrix room
+func (b *Bot) SendNotice(ctx context.Context, roomID id.RoomID, message string) {
 	content := format.RenderMarkdown(message, true, true)
 	content.MsgType = event.MsgNotice
 	_, err := b.lp.Send(roomID, &content)
diff --git a/bot/command.go b/bot/command.go
index 4fc12aa..efcd7c2 100644
--- a/bot/command.go
+++ b/bot/command.go
@@ -19,10 +19,10 @@ const (
 
 type (
 	command struct {
-		key           string
-		description   string
-		sanitizer     func(string) string
-		accessChecker accessCheckerFunc
+		key         string
+		description string
+		sanitizer   func(string) string
+		allowed     func(id.UserID, id.RoomID) bool
 	}
 	commandList []command
 )
@@ -40,28 +40,28 @@ func (b *Bot) buildCommandList() commandList {
 	return commandList{
 		// special commands
 		{
-			key:           commandHelp,
-			description:   "Show this help message",
-			accessChecker: b.allowAnyone,
+			key:         commandHelp,
+			description: "Show this help message",
+			allowed:     b.allowAnyone,
 		},
 		{
-			key:           commandStop,
-			description:   "Disable bridge for the room and clear all configuration",
-			accessChecker: b.allowOwner,
+			key:         commandStop,
+			description: "Disable bridge for the room and clear all configuration",
+			allowed:     b.allowOwner,
 		},
 		{}, // delimiter
 		// options commands
 		{
-			key:           optionMailbox,
-			description:   "Get or set mailbox of the room",
-			sanitizer:     utils.Mailbox,
-			accessChecker: b.allowOwner,
+			key:         optionMailbox,
+			description: "Get or set mailbox of the room",
+			sanitizer:   utils.Mailbox,
+			allowed:     b.allowOwner,
 		},
 		{
-			key:           optionOwner,
-			description:   "Get or set owner of the room",
-			sanitizer:     func(s string) string { return s },
-			accessChecker: b.allowOwner,
+			key:         optionOwner,
+			description: "Get or set owner of the room",
+			sanitizer:   func(s string) string { return s },
+			allowed:     b.allowOwner,
 		},
 		{}, // delimiter
 		{
@@ -70,8 +70,8 @@ func (b *Bot) buildCommandList() commandList {
 				"Get or set `%s` of the room (`true` - hide email sender; `false` - show email sender)",
 				optionNoSender,
 			),
-			sanitizer:     utils.SanitizeBoolString,
-			accessChecker: b.allowOwner,
+			sanitizer: utils.SanitizeBoolString,
+			allowed:   b.allowOwner,
 		},
 		{
 			key: optionNoSubject,
@@ -79,8 +79,8 @@ func (b *Bot) buildCommandList() commandList {
 				"Get or set `%s` of the room (`true` - hide email subject; `false` - show email subject)",
 				optionNoSubject,
 			),
-			sanitizer:     utils.SanitizeBoolString,
-			accessChecker: b.allowOwner,
+			sanitizer: utils.SanitizeBoolString,
+			allowed:   b.allowOwner,
 		},
 		{
 			key: optionNoHTML,
@@ -88,8 +88,8 @@ func (b *Bot) buildCommandList() commandList {
 				"Get or set `%s` of the room (`true` - ignore HTML in email; `false` - parse HTML in emails)",
 				optionNoHTML,
 			),
-			sanitizer:     utils.SanitizeBoolString,
-			accessChecker: b.allowOwner,
+			sanitizer: utils.SanitizeBoolString,
+			allowed:   b.allowOwner,
 		},
 		{
 			key: optionNoThreads,
@@ -97,8 +97,8 @@ func (b *Bot) buildCommandList() commandList {
 				"Get or set `%s` of the room (`true` - ignore email threads; `false` - convert email threads into matrix threads)",
 				optionNoThreads,
 			),
-			sanitizer:     utils.SanitizeBoolString,
-			accessChecker: b.allowOwner,
+			sanitizer: utils.SanitizeBoolString,
+			allowed:   b.allowOwner,
 		},
 		{
 			key: optionNoFiles,
@@ -106,14 +106,14 @@ func (b *Bot) buildCommandList() commandList {
 				"Get or set `%s` of the room (`true` - ignore email attachments; `false` - upload email attachments)",
 				optionNoFiles,
 			),
-			sanitizer:     utils.SanitizeBoolString,
-			accessChecker: b.allowOwner,
+			sanitizer: utils.SanitizeBoolString,
+			allowed:   b.allowOwner,
 		},
 		{}, // delimiter
 		{
-			key:           commandMailboxes,
-			description:   "Show the list of all mailboxes",
-			accessChecker: b.allowAdmin,
+			key:         commandMailboxes,
+			description: "Show the list of all mailboxes",
+			allowed:     b.allowAdmin,
 		},
 	}
 }
@@ -129,13 +129,8 @@ func (b *Bot) handleCommand(ctx context.Context, evt *event.Event, commandSlice
 		return
 	}
 
-	allowed, err := cmd.accessChecker(evt.Sender, evt.RoomID)
-	if err != nil {
-		b.Error(ctx, evt.RoomID, err.Error())
-		return
-	}
-	if !allowed {
-		b.Notice(ctx, evt.RoomID, "not allowed to do that, kupo")
+	if !cmd.allowed(evt.Sender, evt.RoomID) {
+		b.SendNotice(ctx, evt.RoomID, "not allowed to do that, kupo")
 		return
 	}
 
@@ -181,7 +176,7 @@ func (b *Bot) sendIntroduction(ctx context.Context, roomID id.RoomID) {
 	msg.WriteString(b.domain)
 	msg.WriteString("` and have them appear in this room.")
 
-	b.Notice(ctx, roomID, msg.String())
+	b.SendNotice(ctx, roomID, msg.String())
 }
 
 func (b *Bot) sendHelp(ctx context.Context, roomID id.RoomID) {
@@ -226,7 +221,52 @@ func (b *Bot) sendHelp(ctx context.Context, roomID id.RoomID) {
 		msg.WriteString("\n")
 	}
 
-	b.Notice(ctx, roomID, msg.String())
+	b.SendNotice(ctx, roomID, msg.String())
+}
+
+func (b *Bot) sendMailboxes(ctx context.Context) {
+	evt := eventFromContext(ctx)
+	mailboxes := map[string]id.RoomID{}
+	b.rooms.Range(func(key any, value any) bool {
+		if key == nil {
+			return true
+		}
+		if value == nil {
+			return true
+		}
+
+		mailbox, ok := key.(string)
+		if !ok {
+			return true
+		}
+		roomID, ok := value.(id.RoomID)
+		if !ok {
+			return true
+		}
+
+		mailboxes[mailbox] = roomID
+		return true
+	})
+
+	if len(mailboxes) == 0 {
+		b.SendNotice(ctx, evt.RoomID, "No mailboxes are managed by the bot so far, kupo!")
+		return
+	}
+
+	var msg strings.Builder
+	msg.WriteString("The following mailboxes are managed by the bot:\n")
+	for mailbox, roomID := range mailboxes {
+		msg.WriteString("* `")
+		msg.WriteString(mailbox)
+		msg.WriteString("@")
+		msg.WriteString(b.domain)
+		msg.WriteString("` - `")
+		msg.WriteString(roomID.String())
+		msg.WriteString("`")
+		msg.WriteString("\n")
+	}
+
+	b.SendNotice(ctx, evt.RoomID, msg.String())
 }
 
 func (b *Bot) runStop(ctx context.Context) {
@@ -239,7 +279,7 @@ func (b *Bot) runStop(ctx context.Context) {
 
 	mailbox := cfg.Get(optionMailbox)
 	if mailbox == "" {
-		b.Notice(ctx, evt.RoomID, "that room is not configured yet")
+		b.SendNotice(ctx, evt.RoomID, "that room is not configured yet")
 		return
 	}
 
@@ -251,7 +291,7 @@ func (b *Bot) runStop(ctx context.Context) {
 		return
 	}
 
-	b.Notice(ctx, evt.RoomID, "mailbox has been disabled")
+	b.SendNotice(ctx, evt.RoomID, "mailbox has been disabled")
 }
 
 func (b *Bot) handleOption(ctx context.Context, cmd []string) {
@@ -272,7 +312,7 @@ func (b *Bot) getOption(ctx context.Context, name string) {
 
 	value := cfg.Get(name)
 	if value == "" {
-		b.Notice(ctx, evt.RoomID, fmt.Sprintf("`%s` is not set, kupo.", name))
+		b.SendNotice(ctx, evt.RoomID, fmt.Sprintf("`%s` is not set, kupo.", name))
 		return
 	}
 
@@ -280,7 +320,7 @@ func (b *Bot) getOption(ctx context.Context, name string) {
 		value = value + "@" + b.domain
 	}
 
-	b.Notice(ctx, evt.RoomID, fmt.Sprintf("`%s` of this room is `%s`", name, value))
+	b.SendNotice(ctx, evt.RoomID, fmt.Sprintf("`%s` of this room is `%s`", name, value))
 }
 
 func (b *Bot) setOption(ctx context.Context, name, value string) {
@@ -293,7 +333,7 @@ func (b *Bot) setOption(ctx context.Context, name, value string) {
 	if name == optionMailbox {
 		existingID, ok := b.GetMapping(value)
 		if ok && existingID != "" && existingID != evt.RoomID {
-			b.Notice(ctx, evt.RoomID, fmt.Sprintf("Mailbox `%s@%s` already taken, kupo", value, b.domain))
+			b.SendNotice(ctx, evt.RoomID, fmt.Sprintf("Mailbox `%s@%s` already taken, kupo", value, b.domain))
 			return
 		}
 	}
@@ -326,5 +366,5 @@ func (b *Bot) setOption(ctx context.Context, name, value string) {
 		value = value + "@" + b.domain
 	}
 
-	b.Notice(ctx, evt.RoomID, fmt.Sprintf("`%s` of this room set to `%s`", name, value))
+	b.SendNotice(ctx, evt.RoomID, fmt.Sprintf("`%s` of this room set to `%s`", name, value))
 }
diff --git a/config/config.go b/config/config.go
index fd21239..c9e297f 100644
--- a/config/config.go
+++ b/config/config.go
@@ -37,8 +37,8 @@ func New() (*Config, error) {
 		Federation:   env.Bool("federation"),
 		MaxSize:      env.Int("maxsize", defaultConfig.MaxSize),
 		StatusMsg:    env.String("statusmsg", defaultConfig.StatusMsg),
-		Users:        *userPatterns,
-		Admins:       *adminPatterns,
+		Users:        userPatterns,
+		Admins:       adminPatterns,
 		Sentry: Sentry{
 			DSN: env.String("sentry.dsn", defaultConfig.Sentry.DSN),
 		},
@@ -52,7 +52,7 @@ func New() (*Config, error) {
 	return cfg, nil
 }
 
-func getUserRegexPatterns(key string) (*[]*regexp.Regexp, error) {
+func getUserRegexPatterns(key string) ([]*regexp.Regexp, error) {
 	mxidPatterns := env.Slice(key)
 	regexPatterns, err := utils.WildcardMXIDsToRegexes(mxidPatterns)
 	if err != nil {
diff --git a/utils/user.go b/utils/user.go
index 0e8c59e..130d91a 100644
--- a/utils/user.go
+++ b/utils/user.go
@@ -7,7 +7,7 @@ import (
 )
 
 // WildcardMXIDsToRegexes converts a list of wildcard patterns to a list of regular expressions
-func WildcardMXIDsToRegexes(wildCardPatterns []string) (*[]*regexp.Regexp, error) {
+func WildcardMXIDsToRegexes(wildCardPatterns []string) ([]*regexp.Regexp, error) {
 	regexPatterns := make([]*regexp.Regexp, len(wildCardPatterns))
 
 	for idx, wildCardPattern := range wildCardPatterns {
@@ -18,7 +18,7 @@ func WildcardMXIDsToRegexes(wildCardPatterns []string) (*[]*regexp.Regexp, error
 		regexPatterns[idx] = regex
 	}
 
-	return &regexPatterns, nil
+	return regexPatterns, nil
 }
 
 // Match tells if the given user id is allowed to use the bot, according to the given whitelist
diff --git a/utils/user_test.go b/utils/user_test.go
index 5068204..f59cbdb 100644
--- a/utils/user_test.go
+++ b/utils/user_test.go
@@ -202,7 +202,7 @@ func TestMatch(t *testing.T) {
 					t.Error(err)
 				}
 
-				actualResult := Match(testData.checkedValue, *allowedUserRegexes)
+				actualResult := Match(testData.checkedValue, allowedUserRegexes)
 
 				if actualResult == testData.expectedResult {
 					return