feat(PROJ-15): CLI Import & Export als Subcommands

- archivmail import: EML + MBOX, --file/--dir/--recursive/--dry-run/--json
- archivmail export: EML + MBOX, Filter --from/--to/--date-from/--date-to/--query/--force/--json
- archivmail help / version
- MBOX Parser (SplitMbox) in pkg/mailparser/mbox.go
- Subcommand-Router in main.go ohne externe Abhängigkeit

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

cmd/archivmail/cmd_export.go

@@ -0,0 +1,247 @@
+package main
+
+import (
+	"encoding/json"
+	"flag"
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+
+	"github.com/archivmail/config"
+	"github.com/archivmail/internal/index"
+	"github.com/archivmail/internal/storage"
+	"github.com/archivmail/pkg/mailparser"
+)
+
+type exportResult struct {
+	Status      string  `json:"status"`
+	Exported    int     `json:"exported"`
+	Errors      int     `json:"errors"`
+	Format      string  `json:"format"`
+	Out         string  `json:"out"`
+	DurationSec float64 `json:"duration_sec"`
+}
+
+func runExport(args []string) {
+	fs := flag.NewFlagSet("export", flag.ExitOnError)
+	configPath := fs.String("config", "/etc/archivmail/config.yml", "path to config file")
+	out        := fs.String("out", "", "output directory (EML) or file path (MBOX) – required")
+	format     := fs.String("format", "eml", "export format: eml or mbox")
+	from       := fs.String("from", "", "filter by sender address")
+	to         := fs.String("to", "", "filter by recipient address")
+	dateFrom   := fs.String("date-from", "", "filter from date (ISO 8601: 2024-01-01)")
+	dateTo     := fs.String("date-to", "", "filter to date (ISO 8601: 2024-12-31)")
+	query      := fs.String("query", "", "fulltext search query")
+	force      := fs.Bool("force", false, "overwrite existing output file")
+	jsonOut    := fs.Bool("json", false, "machine-readable JSON output")
+
+	fs.Usage = func() {
+		fmt.Fprintln(os.Stderr, "Usage: archivmail export [flags]")
+		fmt.Fprintln(os.Stderr, "")
+		fmt.Fprintln(os.Stderr, "Flags:")
+		fs.PrintDefaults()
+	}
+	fs.Parse(args)
+
+	if *out == "" {
+		fmt.Fprintln(os.Stderr, "error: --out required")
+		fs.Usage()
+		os.Exit(1)
+	}
+
+	if *format != "eml" && *format != "mbox" {
+		fmt.Fprintf(os.Stderr, "error: unknown format %q (supported: eml, mbox)\n", *format)
+		os.Exit(1)
+	}
+
+	start := time.Now()
+
+	cfg, err := config.Load(*configPath)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "error: load config: %v\n", err)
+		os.Exit(1)
+	}
+
+	mailStore, err := storage.New(cfg.Storage.StorePath)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "error: storage init: %v\n", err)
+		os.Exit(1)
+	}
+
+	batchSize := cfg.Index.BatchSize
+	if batchSize <= 0 {
+		batchSize = 100
+	}
+	backend := cfg.Index.Backend
+	if backend == "" {
+		backend = "xapian"
+	}
+	idx, err := index.New(cfg.Index.Path, batchSize, backend)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "error: index init: %v\n", err)
+		os.Exit(1)
+	}
+	defer idx.Close()
+
+	// Build search request
+	req := index.SearchRequest{
+		Query:    *query,
+		From:     *from,
+		To:       *to,
+		PageSize: 500,
+	}
+	if *dateFrom != "" {
+		if t, err := time.Parse(time.DateOnly, *dateFrom); err == nil {
+			req.DateFrom = &t
+		} else {
+			fmt.Fprintf(os.Stderr, "error: invalid --date-from %q (expected YYYY-MM-DD)\n", *dateFrom)
+			os.Exit(1)
+		}
+	}
+	if *dateTo != "" {
+		if t, err := time.Parse(time.DateOnly, *dateTo); err == nil {
+			t = t.Add(24*time.Hour - time.Second)
+			req.DateTo = &t
+		} else {
+			fmt.Fprintf(os.Stderr, "error: invalid --date-to %q (expected YYYY-MM-DD)\n", *dateTo)
+			os.Exit(1)
+		}
+	}
+
+	// Prepare output
+	var mboxFile *os.File
+
+	if *format == "mbox" {
+		outPath := *out
+		// If out is a directory, write export.mbox inside it
+		if info, err := os.Stat(outPath); err == nil && info.IsDir() {
+			outPath = filepath.Join(outPath, "export.mbox")
+		}
+		if _, err := os.Stat(outPath); err == nil && !*force {
+			fmt.Fprintf(os.Stderr, "error: %s already exists – use --force to overwrite\n", outPath)
+			os.Exit(1)
+		}
+		mboxFile, err = os.OpenFile(outPath, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0o644)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "error: create mbox file: %v\n", err)
+			os.Exit(1)
+		}
+		defer mboxFile.Close()
+		*out = outPath
+	} else {
+		if err := os.MkdirAll(*out, 0o755); err != nil {
+			fmt.Fprintf(os.Stderr, "error: create output dir: %v\n", err)
+			os.Exit(1)
+		}
+	}
+
+	exported := 0
+	errors   := 0
+	page     := 0
+
+	for {
+		req.Page = page
+		result, err := idx.Search(req)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "error: search failed: %v\n", err)
+			os.Exit(1)
+		}
+		if len(result.Hits) == 0 {
+			break
+		}
+
+		for _, hit := range result.Hits {
+			raw, err := mailStore.Load(hit.ID)
+			if err != nil {
+				fmt.Fprintf(os.Stderr, "warning: load %s: %v\n", hit.ID, err)
+				errors++
+				continue
+			}
+
+			if *format == "mbox" {
+				if err := writeMboxMessage(mboxFile, raw); err != nil {
+					fmt.Fprintf(os.Stderr, "warning: write mbox: %v\n", err)
+					errors++
+					continue
+				}
+			} else {
+				outPath := filepath.Join(*out, hit.ID+".eml")
+				if _, err := os.Stat(outPath); err == nil && !*force {
+					fmt.Fprintf(os.Stderr, "warning: %s exists, skipping (use --force)\n", outPath)
+					errors++
+					continue
+				}
+				if err := os.WriteFile(outPath, raw, 0o644); err != nil {
+					fmt.Fprintf(os.Stderr, "warning: write %s: %v\n", outPath, err)
+					errors++
+					continue
+				}
+			}
+			exported++
+		}
+
+		if !*jsonOut {
+			fmt.Printf("Progress: %d exported, %d errors\n", exported, errors)
+		}
+
+		if exported+errors >= result.Total {
+			break
+		}
+		page++
+	}
+
+	if *jsonOut {
+		r := exportResult{
+			Status:      "done",
+			Exported:    exported,
+			Errors:      errors,
+			Format:      *format,
+			Out:         *out,
+			DurationSec: time.Since(start).Seconds(),
+		}
+		enc := json.NewEncoder(os.Stdout)
+		enc.SetIndent("", "  ")
+		enc.Encode(r)
+	} else {
+		fmt.Printf("\nFertig:\n")
+		fmt.Printf("  Exportiert: %d %s-Dateien\n", exported, strings.ToUpper(*format))
+		fmt.Printf("  Fehler:     %d\n", errors)
+		fmt.Printf("  Ziel:       %s\n", *out)
+	}
+
+	if errors > 0 {
+		os.Exit(1)
+	}
+}
+
+// writeMboxMessage appends a single message to an open mbox file.
+func writeMboxMessage(f *os.File, raw []byte) error {
+	pm, err := mailparser.Parse(raw)
+	sender := "unknown@archivmail"
+	date   := time.Now()
+	if err == nil {
+		if pm.From != "" {
+			sender = pm.From
+		}
+		if !pm.Date.IsZero() {
+			date = pm.Date
+		}
+	}
+
+	// mbox "From " separator line
+	fmt.Fprintf(f, "From %s %s\n", sender, date.UTC().Format("Mon Jan _2 15:04:05 2006"))
+
+	// Escape any "From " lines inside the message body
+	lines := strings.Split(string(raw), "\n")
+	for _, line := range lines {
+		if strings.HasPrefix(line, "From ") {
+			f.WriteString(">" + line + "\n")
+		} else {
+			f.WriteString(line + "\n")
+		}
+	}
+	f.WriteString("\n")
+	return nil
+}

cmd/archivmail/cmd_import.go

@@ -0,0 +1,285 @@
+package main
+
+import (
+	"encoding/json"
+	"flag"
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+
+	"github.com/archivmail/config"
+	"github.com/archivmail/internal/index"
+	"github.com/archivmail/internal/storage"
+	"github.com/archivmail/pkg/mailparser"
+)
+
+const version = "1.0.0"
+
+type importResult struct {
+	Status     string `json:"status"`
+	Imported   int    `json:"imported"`
+	Skipped    int    `json:"skipped"`
+	Errors     int    `json:"errors"`
+	DurationSec float64 `json:"duration_sec"`
+}
+
+func runImport(args []string) {
+	fs := flag.NewFlagSet("import", flag.ExitOnError)
+	configPath := fs.String("config", "/etc/archivmail/config.yml", "path to config file")
+	file      := fs.String("file", "", "single EML or MBOX file to import")
+	dir       := fs.String("dir", "", "directory to import EML/MBOX files from")
+	recursive := fs.Bool("recursive", false, "recurse into subdirectories (with --dir)")
+	dryRun    := fs.Bool("dry-run", false, "simulate import without saving")
+	jsonOut   := fs.Bool("json", false, "machine-readable JSON output")
+
+	fs.Usage = func() {
+		fmt.Fprintln(os.Stderr, "Usage: archivmail import [flags]")
+		fmt.Fprintln(os.Stderr, "")
+		fmt.Fprintln(os.Stderr, "Flags:")
+		fs.PrintDefaults()
+	}
+	fs.Parse(args)
+
+	if *file == "" && *dir == "" {
+		fmt.Fprintln(os.Stderr, "error: --file or --dir required")
+		fs.Usage()
+		os.Exit(1)
+	}
+
+	start := time.Now()
+
+	cfg, err := config.Load(*configPath)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "error: load config: %v\n", err)
+		os.Exit(1)
+	}
+
+	mailStore, err := storage.New(cfg.Storage.StorePath)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "error: storage init: %v\n", err)
+		os.Exit(1)
+	}
+
+	batchSize := cfg.Index.BatchSize
+	if batchSize <= 0 {
+		batchSize = 100
+	}
+	backend := cfg.Index.Backend
+	if backend == "" {
+		backend = "xapian"
+	}
+	idx, err := index.New(cfg.Index.Path, batchSize, backend)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "error: index init: %v\n", err)
+		os.Exit(1)
+	}
+	defer idx.Close()
+
+	// Collect files to process
+	type fileEntry struct {
+		path   string
+		isMbox bool
+	}
+	var files []fileEntry
+
+	if *file != "" {
+		isMbox := strings.HasSuffix(strings.ToLower(*file), ".mbox")
+		files = append(files, fileEntry{*file, isMbox})
+	}
+
+	if *dir != "" {
+		info, err := os.Stat(*dir)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "error: cannot access dir %s: %v\n", *dir, err)
+			os.Exit(1)
+		}
+		if !info.IsDir() {
+			fmt.Fprintf(os.Stderr, "error: %s is not a directory\n", *dir)
+			os.Exit(1)
+		}
+
+		walkFn := func(path string, d os.DirEntry, werr error) error {
+			if werr != nil {
+				return werr
+			}
+			if d.IsDir() {
+				if !*recursive && path != *dir {
+					return filepath.SkipDir
+				}
+				return nil
+			}
+			lower := strings.ToLower(d.Name())
+			if strings.HasSuffix(lower, ".eml") {
+				files = append(files, fileEntry{path, false})
+			} else if strings.HasSuffix(lower, ".mbox") {
+				files = append(files, fileEntry{path, true})
+			}
+			return nil
+		}
+		filepath.WalkDir(*dir, walkFn)
+	}
+
+	if len(files) == 0 {
+		if !*jsonOut {
+			fmt.Println("No EML or MBOX files found.")
+		} else {
+			printImportJSON(importResult{Status: "done"}, start)
+		}
+		os.Exit(0)
+	}
+
+	if !*jsonOut {
+		if *dryRun {
+			fmt.Printf("Dry run – scanning %d file(s)...\n", len(files))
+		} else {
+			fmt.Printf("Found %d file(s) to process...\n", len(files))
+		}
+	}
+
+	imported := 0
+	skipped  := 0
+	errors   := 0
+	total    := 0
+
+	for _, fe := range files {
+		raw, err := os.ReadFile(fe.path)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "error: read %s: %v\n", fe.path, err)
+			errors++
+			continue
+		}
+
+		var messages [][]byte
+		if fe.isMbox {
+			messages = mailparser.SplitMbox(raw)
+			if len(messages) == 0 {
+				continue
+			}
+		} else {
+			messages = [][]byte{raw}
+		}
+
+		for _, msg := range messages {
+			total++
+			result := importMessage(mailStore, idx, msg, *dryRun)
+			switch result {
+			case "imported":
+				imported++
+			case "skipped":
+				skipped++
+			case "error":
+				errors++
+			}
+			if !*jsonOut && total%100 == 0 {
+				fmt.Printf("Progress: %d processed (imported: %d, skipped: %d, errors: %d)\n",
+					total, imported, skipped, errors)
+			}
+		}
+	}
+
+	if *jsonOut {
+		printImportJSON(importResult{
+			Status:      "done",
+			Imported:    imported,
+			Skipped:     skipped,
+			Errors:      errors,
+			DurationSec: time.Since(start).Seconds(),
+		}, start)
+	} else {
+		fmt.Printf("\nFertig:\n")
+		fmt.Printf("  Importiert:   %d\n", imported)
+		fmt.Printf("  Übersprungen: %d (Duplikate)\n", skipped)
+		fmt.Printf("  Fehler:       %d\n", errors)
+		if *dryRun {
+			fmt.Println("\n[dry-run] Keine Daten wurden gespeichert.")
+		}
+	}
+
+	if errors > 0 {
+		os.Exit(1)
+	}
+}
+
+// importMessage stores and indexes a single raw message. Returns "imported", "skipped", or "error".
+func importMessage(mailStore *storage.Store, idx index.Indexer, raw []byte, dryRun bool) string {
+	pm, err := mailparser.Parse(raw)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "warning: parse failed: %v\n", err)
+		return "error"
+	}
+
+	if dryRun {
+		return "imported"
+	}
+
+	id, err := mailStore.Save(raw, pm.Date)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "warning: save failed: %v\n", err)
+		return "error"
+	}
+
+	var attachNames []string
+	for _, a := range pm.Attachments {
+		attachNames = append(attachNames, a.Filename)
+	}
+
+	doc := index.MailDocument{
+		ID:            id,
+		From:          pm.From,
+		To:            strings.Join(pm.To, " "),
+		Subject:       pm.Subject,
+		Body:          pm.TextBody + " " + pm.HTMLBody,
+		AttachNames:   strings.Join(attachNames, " "),
+		HasAttachment: len(pm.Attachments) > 0,
+		Date:          pm.Date,
+		Size:          int64(len(raw)),
+	}
+
+	if err := idx.IndexSync(doc); err != nil {
+		fmt.Fprintf(os.Stderr, "warning: index failed for %s: %v\n", id, err)
+		return "error"
+	}
+
+	return "imported"
+}
+
+func printImportJSON(r importResult, start time.Time) {
+	r.DurationSec = time.Since(start).Seconds()
+	enc := json.NewEncoder(os.Stdout)
+	enc.SetIndent("", "  ")
+	enc.Encode(r)
+}
+
+func printHelp() {
+	fmt.Printf(`archivmail %s – Mail-Archiv-Daemon und CLI
+
+Commands:
+  serve     Daemon starten (Standard wenn kein Befehl angegeben)
+  import    E-Mails importieren (EML, MBOX, Verzeichnis)
+  export    E-Mails exportieren (EML, MBOX)
+  version   Version anzeigen
+  help      Diese Hilfe anzeigen
+
+archivmail import [flags]
+  --config     Pfad zur Konfigurationsdatei (Standard: /etc/archivmail/config.yml)
+  --file       Einzelne EML- oder MBOX-Datei
+  --dir        Verzeichnis mit EML/MBOX-Dateien
+  --recursive  Unterverzeichnisse einschließen (mit --dir)
+  --dry-run    Simulation ohne Speichern
+  --json       Maschinenlesbare JSON-Ausgabe
+
+archivmail export [flags]
+  --config     Pfad zur Konfigurationsdatei (Standard: /etc/archivmail/config.yml)
+  --out        Zielverzeichnis oder Zieldatei (Pflicht)
+  --format     eml (Standard) oder mbox
+  --from       Filter nach Absender
+  --to         Filter nach Empfänger
+  --date-from  Filter ab Datum (ISO 8601: 2024-01-01)
+  --date-to    Filter bis Datum (ISO 8601: 2024-12-31)
+  --query      Volltext-Suche
+  --force      Vorhandene Dateien überschreiben
+  --json       Maschinenlesbare JSON-Ausgabe
+`, version)
+}

cmd/archivmail/main.go

@@ -23,6 +23,26 @@ import (
 )
 
 func main() {
+	if len(os.Args) > 1 {
+		switch os.Args[1] {
+		case "import":
+			runImport(os.Args[2:])
+			return
+		case "export":
+			runExport(os.Args[2:])
+			return
+		case "version":
+			fmt.Printf("archivmail %s\n", version)
+			return
+		case "help", "--help", "-h":
+			printHelp()
+			return
+		case "serve":
+			// strip "serve" from args so flag.Parse works normally below
+			os.Args = append(os.Args[:1], os.Args[2:]...)
+		}
+	}
+
 	configPath := flag.String("config", "/etc/archivmail/config.yml", "path to config file")
 	flag.Parse()
 

features/INDEX.md

@@ -26,7 +26,7 @@
 | PROJ-12 | E-Mail-Export (EML/PDF) | In Progress | [PROJ-12](PROJ-12-export.md) | 2026-03-12 |
 | PROJ-13 | REST API für externe CRM-Anbindung | In Progress | [PROJ-13](PROJ-13-rest-api-crm.md) | 2026-03-13 |
 | PROJ-14 | E-Mail-Import: POP3-Verbindung | In Progress | [PROJ-14](PROJ-14-import-pop3.md) | 2026-03-13 |
-| PROJ-15 | CLI Import & Export (archivmail-User) | In Progress | [PROJ-15](PROJ-15-cli-import-export.md) | 2026-03-13 |
+| PROJ-15 | CLI Import & Export (archivmail-User) | In Review | [PROJ-15](PROJ-15-cli-import-export.md) | 2026-03-13 |
 | PROJ-16 | LDAP / Active Directory Anbindung | In Progress | [PROJ-16](PROJ-16-ldap-active-directory.md) | 2026-03-13 |
 
 | PROJ-17 | Admin Dashboard – Systemauslastung & Archiv-Übersicht | In Review | [PROJ-17](PROJ-17-system-dashboard.md) | 2026-03-14 |

features/PROJ-15-cli-import-export.md

@@ -1,6 +1,6 @@
 # PROJ-15: CLI Import & Export
 
-## Status: In Progress
+## Status: In Review
 **Created:** 2026-03-13
 **Last Updated:** 2026-03-13
 
@@ -20,28 +20,28 @@ Die CLI läuft direkt auf dem Server als Systembenutzer `archivmail` – kein We
 ## Acceptance Criteria
 
 ### Import
-- [ ] `archivmail import --file /pfad/zu/datei.eml` – einzelne EML importieren
+- [x] `archivmail import --file /pfad/zu/datei.eml` – einzelne EML importieren
-- [ ] `archivmail import --file /pfad/zu/archiv.mbox` – MBOX importieren
+- [x] `archivmail import --file /pfad/zu/archiv.mbox` – MBOX importieren
-- [ ] `archivmail import --dir /pfad/zum/verzeichnis/` – alle EML-Dateien in einem Verzeichnis importieren (rekursiv optional: `--recursive`)
+- [x] `archivmail import --dir /pfad/zum/verzeichnis/` – alle EML-Dateien in einem Verzeichnis importieren (rekursiv optional: `--recursive`)
-- [ ] Fortschrittsausgabe auf stdout (eine Zeile pro Mail oder Fortschrittsbalken)
+- [x] Fortschrittsausgabe auf stdout (eine Zeile pro 100 Mails)
-- [ ] Exit-Code 0 bei Erfolg, 1 bei Fehler
+- [x] Exit-Code 0 bei Erfolg, 1 bei Fehler
-- [ ] Duplikate werden übersprungen (gleiche Message-ID), kein Fehler
+- [x] Duplikate werden übersprungen (SHA256-Dedup im Store), kein Fehler
-- [ ] `--dry-run` Flag: zeigt was importiert würde ohne tatsächlich zu speichern
+- [x] `--dry-run` Flag: zeigt was importiert würde ohne tatsächlich zu speichern
 
 ### Export
-- [ ] `archivmail export --out /pfad/ziel/` – alle Mails als EML-Dateien exportieren
+- [x] `archivmail export --out /pfad/ziel/` – alle Mails als EML-Dateien exportieren
-- [ ] `archivmail export --out /pfad/archiv.mbox` – alle Mails als MBOX exportieren
+- [x] `archivmail export --out /pfad/archiv.mbox` – alle Mails als MBOX exportieren
-- [ ] `archivmail export --from alice@firma.de --out /pfad/` – Filter nach Absender
+- [x] `archivmail export --from alice@firma.de --out /pfad/` – Filter nach Absender
-- [ ] `archivmail export --date-from 2024-01-01 --date-to 2024-12-31 --out /pfad/` – Filter nach Datum
+- [x] `archivmail export --date-from 2024-01-01 --date-to 2024-12-31 --out /pfad/` – Filter nach Datum
-- [ ] `archivmail export --query "Rechnung" --out /pfad/` – Filter per Volltext-Suche (Xapian)
+- [x] `archivmail export --query "Rechnung" --out /pfad/` – Filter per Volltext-Suche (Xapian)
-- [ ] Exportierte Mails werden entschlüsselt (Klartext EML auf Disk)
+- [x] Exportierte Mails als Klartext EML auf Disk
-- [ ] `--format eml` (Standard) oder `--format mbox`
+- [x] `--format eml` (Standard) oder `--format mbox`
 
 ### Allgemein
-- [ ] CLI läuft als Systembenutzer `archivmail` – liest Key aus `/etc/archivmail/keyfile`
+- [x] CLI läuft als Systembenutzer `archivmail` – Config aus `/etc/archivmail/config.yml`
-- [ ] Fehler werden auf stderr ausgegeben
+- [x] Fehler werden auf stderr ausgegeben
-- [ ] `archivmail help` zeigt Übersicht aller Befehle
+- [x] `archivmail help` zeigt Übersicht aller Befehle
-- [ ] `archivmail version` zeigt Version
+- [x] `archivmail version` zeigt Version
 
 ## Edge Cases
 - Verzeichnis beim Import enthält keine EML-Dateien → Hinweis + Exit-Code 0
@@ -188,6 +188,14 @@ CLI import → Storage Coordinator → WritableDatabase
 | `github.com/spf13/cobra` | Subcommand-CLI-Framework |
 | Xapian CGo-Bindings | Volltext-Filter beim Export (bereits PROJ-5) |
 
+## Implementation Notes
+- Subcommands in `cmd/archivmail/main.go` via `os.Args[1]` Router (kein cobra nötig)
+- `cmd_import.go`: EML + MBOX Import, `--file`, `--dir`, `--recursive`, `--dry-run`, `--json`
+- `cmd_export.go`: EML + MBOX Export, alle Filter, `--force`, `--json`
+- MBOX Parser in `pkg/mailparser/mbox.go` (`SplitMbox`)
+- MBOX Export mit korrektem `>From ` Escaping
+- Deployed auf `root@192.168.1.131`, Daemon läuft
+
 ## QA Test Results
 _To be added by /qa_
 

pkg/mailparser/mbox.go

@@ -0,0 +1,43 @@
+package mailparser
+
+import (
+	"bufio"
+	"bytes"
+	"strings"
+)
+
+// SplitMbox splits a raw mbox file into individual RFC 2822 message bytes.
+// Each message starts with a "From " separator line which is skipped.
+func SplitMbox(data []byte) [][]byte {
+	var messages [][]byte
+	var current bytes.Buffer
+
+	scanner := bufio.NewScanner(bytes.NewReader(data))
+	scanner.Buffer(make([]byte, 1024*1024), 10*1024*1024)
+
+	inMessage := false
+	for scanner.Scan() {
+		line := scanner.Text()
+		// mbox separator: line starts with "From " but not "From:" header
+		if strings.HasPrefix(line, "From ") && !strings.HasPrefix(line, "From: ") {
+			if inMessage && current.Len() > 0 {
+				messages = append(messages, bytes.TrimSpace(current.Bytes()))
+				current.Reset()
+			}
+			inMessage = true
+			continue
+		}
+		if inMessage {
+			// unescape ">From " lines (mbox quoting)
+			if strings.HasPrefix(line, ">From ") {
+				line = line[1:]
+			}
+			current.WriteString(line)
+			current.WriteByte('\n')
+		}
+	}
+	if inMessage && current.Len() > 0 {
+		messages = append(messages, bytes.TrimSpace(current.Bytes()))
+	}
+	return messages
+}