diff --git a/backend/dto/parsemail/dkim.go b/backend/dto/parsemail/dkim.go
index 8d82700..fb22a9e 100644
--- a/backend/dto/parsemail/dkim.go
+++ b/backend/dto/parsemail/dkim.go
@@ -8,7 +8,6 @@ import (
 	"encoding/pem"
 	"fmt"
 	"git.pcux.cn/xuans/Smail/config"
-	"git.pcux.cn/xuans/Smail/utils/consts"
 	"git.pcux.cn/xuans/Smail/utils/context"
 	securefile "git.pcux.cn/xuans/Smail/utils/file"
 	"github.com/emersion/go-msgauth/dkim"
@@ -132,9 +131,6 @@ func Check(ctx *context.Context, mail io.Reader) bool {
 	}
 
 	for _, v := range verifications {
-		if v.Domain == consts.TEST_DOMAIN {
-			return true
-		}
 		if v.Err == nil {
 			log.Println("Valid signature for:", v.Domain)
 		} else {
diff --git a/backend/dto/parsemail/email.go b/backend/dto/parsemail/email.go
index 799e84b..22733e5 100644
--- a/backend/dto/parsemail/email.go
+++ b/backend/dto/parsemail/email.go
@@ -399,7 +399,7 @@ func NewEmailFromReader(to []string, r io.Reader, size int) (*Email, error) {
 	}
 
 	ret.Cc = buildUsers(m.Header.Values("Cc"))
-	ret.ReplyTo = buildUsers(m.Header.Values("ReplyTo"))
+	ret.ReplyTo = buildUsers(m.Header.Values("Reply-To"))
 	ret.Sender = buildUser(m.Header.Get("Sender"))
 	if ret.Sender == nil || strings.TrimSpace(ret.Sender.EmailAddress) == "" {
 		ret.Sender = ret.From
@@ -582,12 +582,15 @@ func buildUsers(strs []string) []*User {
 		if strings.TrimSpace(line) == "" {
 			continue
 		}
-
-		parts := strings.Split(line, ",")
-		for _, part := range parts {
-			if u := buildUser(strings.TrimSpace(part)); u != nil {
-				ret = append(ret, u)
+		addresses, err := mail.ParseAddressList(line)
+		if err == nil {
+			for _, address := range addresses {
+				ret = append(ret, buildUser(address.String()))
 			}
+			continue
+		}
+		if user := buildUser(line); user != nil {
+			ret = append(ret, user)
 		}
 	}
 	return ret
@@ -692,6 +695,9 @@ func (e *Email) ForwardBuildBytes(ctx *context.Context, sender *models.User, for
 		}
 		var ah mail.AttachmentHeader
 		ah.Set("Content-Type", attachment.ContentType)
+		if attachment.ContentID != "" {
+			ah.Set("Content-ID", fmt.Sprintf("<%s>", attachment.ContentID))
+		}
 		ah.SetFilename(attachment.Filename)
 		w, err = mw.CreateAttachment(ah)
 		if err != nil {
@@ -825,6 +831,16 @@ func (e *Email) BuildBytes(ctx *context.Context, dkim bool) ([]byte, error) {
 	h.SetAddressList("Sender", from)
 	h.SetAddressList("To", to)
 	h.SetText("Subject", e.Subject)
+	if len(e.ReplyTo) != 0 {
+		replyTo := make([]*mail.Address, 0, len(e.ReplyTo))
+		for _, user := range e.ReplyTo {
+			if user == nil || user.EmailAddress == "" {
+				return nil, errors.New("invalid reply-to recipient")
+			}
+			replyTo = append(replyTo, &mail.Address{Name: user.Name, Address: user.EmailAddress})
+		}
+		h.SetAddressList("Reply-To", replyTo)
+	}
 	if len(e.Cc) != 0 {
 		cc := []*mail.Address{}
 		for _, user := range e.Cc {
@@ -894,6 +910,9 @@ func (e *Email) BuildBytes(ctx *context.Context, dkim bool) ([]byte, error) {
 		}
 		var ah mail.AttachmentHeader
 		ah.Set("Content-Type", attachment.ContentType)
+		if attachment.ContentID != "" {
+			ah.Set("Content-ID", fmt.Sprintf("<%s>", attachment.ContentID))
+		}
 		ah.SetFilename(attachment.Filename)
 		w, err = mw.CreateAttachment(ah)
 		if err != nil {
diff --git a/backend/services/detail/detail.go b/backend/services/detail/detail.go
index ae50a53..519fac3 100644
--- a/backend/services/detail/detail.go
+++ b/backend/services/detail/detail.go
@@ -41,6 +41,9 @@ func GetEmailDetail(ctx *context.Context, id int, markRead bool) (*response.Emai
 	}
 
 	email.IsRead = ue.IsRead
+	if email.Type == 0 {
+		email.Bcc = "[]"
+	}
 
 	// 将内容中的cid内容替换成url
 	if strings.TrimSpace(email.Attachments) != "" {