diff --git a/svc/routes/order_mail.go b/svc/routes/order_mail.go
index a6e4793..20cf7c6 100644
--- a/svc/routes/order_mail.go
+++ b/svc/routes/order_mail.go
@@ -9,11 +9,16 @@ import (
 	"net/http"
 	"strings"
 
+	"bssapp-backend/auth"
 	"bssapp-backend/internal/mailer"
 )
 
 type sendOrderMarketMailPayload struct {
-	OrderHeaderID string `json:"orderHeaderID"`
+	OrderHeaderID string   `json:"orderHeaderID"`
+	Operation     string   `json:"operation"`
+	DeletedItems  []string `json:"deletedItems"`
+	UpdatedItems  []string `json:"updatedItems"`
+	AddedItems    []string `json:"addedItems"`
 }
 
 func SendOrderMarketMailHandler(pg *sql.DB, mssql *sql.DB, ml *mailer.GraphMailer) http.HandlerFunc {
@@ -28,6 +33,11 @@ func SendOrderMarketMailHandler(pg *sql.DB, mssql *sql.DB, ml *mailer.GraphMaile
 			http.Error(w, "database not initialized", http.StatusInternalServerError)
 			return
 		}
+		claims, ok := auth.GetClaimsFromContext(r.Context())
+		if !ok || claims == nil {
+			http.Error(w, "unauthorized", http.StatusUnauthorized)
+			return
+		}
 
 		var payload sendOrderMarketMailPayload
 		if err := json.NewDecoder(r.Body).Decode(&payload); err != nil {
@@ -80,14 +90,52 @@ func SendOrderMarketMailHandler(pg *sql.DB, mssql *sql.DB, ml *mailer.GraphMaile
 			marketLabel = strings.TrimSpace(marketCode)
 		}
 
-		subject := fmt.Sprintf("Sipariş %s - %s", number, marketLabel)
-		bodyHTML := fmt.Sprintf(
-			`<p>Sipariş kaydı oluşturuldu/güncellendi.</p><p><b>Sipariş No:</b> %s<br/><b>Cari:</b> %s<br/><b>Piyasa:</b> %s</p><p>PDF ektedir.</p>`,
-			htmlEsc(number),
-			htmlEsc(currAccCode),
-			htmlEsc(marketLabel),
+		actor := strings.TrimSpace(claims.Username)
+		if actor == "" {
+			actor = strings.TrimSpace(claims.V3Username)
+		}
+		if actor == "" {
+			actor = "Bilinmeyen Kullanici"
+		}
+
+		op := strings.ToLower(strings.TrimSpace(payload.Operation))
+		isUpdate := op == "update"
+
+		subjectAction := "SİPARİŞ KAYDI OLUŞTURULDU"
+		if isUpdate {
+			subjectAction = "SİPARİŞ GÜNCELLENDİ."
+		}
+		subject := fmt.Sprintf("%s kullanıcısı tarafından %s %s", actor, number, subjectAction)
+
+		cariDetail := ""
+		customerRep := ""
+		if header != nil {
+			cariDetail = strings.TrimSpace(header.CurrAccName)
+			customerRep = strings.TrimSpace(header.CustomerRep)
+		}
+
+		body := make([]string, 0, 12)
+		body = append(body,
+			`<p>`,
+			fmt.Sprintf(`<b>Cari Kodu:</b> %s<br/>`, htmlEsc(currAccCode)),
+			fmt.Sprintf(`<b>Cari Detay:</b> %s<br/>`, htmlEsc(cariDetail)),
+			fmt.Sprintf(`<b>Müşteri Temsilcisi:</b> %s<br/>`, htmlEsc(customerRep)),
+			fmt.Sprintf(`<b>Piyasa:</b> %s`, htmlEsc(marketLabel)),
+			`</p>`,
 		)
 
+		if isUpdate {
+			body = append(body,
+				renderItemListHTML("Silinen Ürün Kodları", payload.DeletedItems),
+				renderItemListHTML("Güncellenen Ürün Kodları", payload.UpdatedItems),
+				renderItemListHTML("Eklenen Ürün Kodları", payload.AddedItems),
+			)
+		}
+
+		body = append(body, `<p><i>Bu sipariş BaggiSS App Uygulamasından oluşturulmuştur.</i></p>`)
+		body = append(body, `<p>PDF ektedir.</p>`)
+		bodyHTML := strings.Join(body, "\n")
+
 		fileNo := sanitizeFileName(number)
 		if fileNo == "" {
 			fileNo = orderID
@@ -256,3 +304,31 @@ func htmlEsc(s string) string {
 	)
 	return r.Replace(s)
 }
+
+func renderItemListHTML(title string, items []string) string {
+	clean := make([]string, 0, len(items))
+	seen := make(map[string]struct{}, len(items))
+	for _, raw := range items {
+		v := strings.TrimSpace(raw)
+		if v == "" {
+			continue
+		}
+		if _, ok := seen[v]; ok {
+			continue
+		}
+		seen[v] = struct{}{}
+		clean = append(clean, v)
+	}
+
+	if len(clean) == 0 {
+		return fmt.Sprintf(`<p><b>%s:</b> Yok</p>`, htmlEsc(title))
+	}
+
+	b := make([]string, 0, len(clean)+3)
+	b = append(b, fmt.Sprintf(`<p><b>%s:</b><br/>`, htmlEsc(title)))
+	for _, item := range clean {
+		b = append(b, "- "+htmlEsc(item)+"<br/>")
+	}
+	b = append(b, `</p>`)
+	return strings.Join(b, "\n")
+}
diff --git a/ui/src/stores/orderentryStore.js b/ui/src/stores/orderentryStore.js
index 4c9b38b..02bd2f3 100644
--- a/ui/src/stores/orderentryStore.js
+++ b/ui/src/stores/orderentryStore.js
@@ -400,7 +400,68 @@ export const useOrderEntryStore = defineStore('orderentry', {
     }
     ,
 
-    async sendOrderToMarketMails(orderId) {
+    buildMailLineLabel(line) {
+      if (!line || typeof line !== 'object') return ''
+
+      const item = String(line.ItemCode || '').trim()
+      const color1 = String(line.ColorCode || '').trim()
+      const color2 = String(line.ItemDim2Code || '').trim()
+      const desc = String(line.LineDescription || '').trim()
+
+      if (!item) return ''
+
+      const colorPart = color2 ? `${color1}-${color2}` : color1
+      return [item, colorPart, desc].filter(Boolean).join(' ')
+    }
+    ,
+
+    buildOrderMailPayload(lines = [], isNew = false) {
+      const uniq = (arr) => [...new Set((arr || []).map(v => String(v || '').trim()).filter(Boolean))]
+
+      const normalized = Array.isArray(lines) ? lines : []
+      const mapLabel = (ln) => this.buildMailLineLabel(ln)
+
+      if (isNew) {
+        return {
+          operation: 'create',
+          deletedItems: [],
+          updatedItems: [],
+          addedItems: uniq(
+            normalized
+              .filter(ln => !ln?._deleteSignal)
+              .map(mapLabel)
+          )
+        }
+      }
+
+      const deletedItems = uniq(
+        normalized
+          .filter(ln => ln?._deleteSignal === true)
+          .map(mapLabel)
+      )
+
+      const updatedItems = uniq(
+        normalized
+          .filter(ln => !ln?._deleteSignal && !!ln?.OrderLineID && ln?._dirty === true)
+          .map(mapLabel)
+      )
+
+      const addedItems = uniq(
+        normalized
+          .filter(ln => !ln?._deleteSignal && !ln?.OrderLineID)
+          .map(mapLabel)
+      )
+
+      return {
+        operation: 'update',
+        deletedItems,
+        updatedItems,
+        addedItems
+      }
+    }
+    ,
+
+    async sendOrderToMarketMails(orderId, payload = {}) {
       const id = String(orderId || this.header?.OrderHeaderID || '').trim()
       if (!id) {
         throw new Error('Sipariş ID bulunamadı')
@@ -408,7 +469,11 @@ export const useOrderEntryStore = defineStore('orderentry', {
 
       try {
         const res = await api.post('/order/send-market-mail', {
-          orderHeaderID: id
+          orderHeaderID: id,
+          operation: payload?.operation || 'create',
+          deletedItems: Array.isArray(payload?.deletedItems) ? payload.deletedItems : [],
+          updatedItems: Array.isArray(payload?.updatedItems) ? payload.updatedItems : [],
+          addedItems: Array.isArray(payload?.addedItems) ? payload.addedItems : []
         })
         return res?.data || {}
       } catch (err) {
@@ -2867,7 +2932,8 @@ export const useOrderEntryStore = defineStore('orderentry', {
 
         // 📧 Piyasa eşleşen alıcılara sipariş PDF gönderimi (kayıt başarılı olduktan sonra)
         try {
-          const mailRes = await this.sendOrderToMarketMails(serverOrderId)
+          const mailPayload = this.buildOrderMailPayload(lines, isNew)
+          const mailRes = await this.sendOrderToMarketMails(serverOrderId, mailPayload)
           const sentCount = Number(mailRes?.sentCount || 0)
           $q.notify({
             type: 'positive',