diff --git a/commands/compose/send.go b/commands/compose/send.go
index a3047ddf..7fd1971b 100644
--- a/commands/compose/send.go
+++ b/commands/compose/send.go
@@ -192,12 +192,15 @@ func sendHelper(composer *app.Composer, header *mail.Header, uri *url.URL, domai
 	go func() {
 		defer log.PanicHandler()
 
-		var parentDir string
+		var folders []string
+		if copyTo != "" {
+			folders = append(folders, copyTo)
+		}
 		if copyToReplied && composer.Parent() != nil {
-			parentDir = composer.Parent().Folder
+			folders = append(folders, composer.Parent().Folder)
 		}
 		sender, err := send.NewSender(
-			composer.Worker(), uri, domain, from, rcpts, parentDir)
+			composer.Worker(), uri, domain, from, rcpts, folders)
 		if err != nil {
 			failCh <- errors.Wrap(err, "send:")
 			return
diff --git a/commands/msg/bounce.go b/commands/msg/bounce.go
index 819595cc..3b093ab4 100644
--- a/commands/msg/bounce.go
+++ b/commands/msg/bounce.go
@@ -159,7 +159,7 @@ func (b Bounce) Execute(args []string) error {
 				msg.Envelope.MessageId, addresses)
 
 			if sender, err = send.NewSender(acct.Worker(), uri,
-				domain, config.From, rcpts, ""); err != nil {
+				domain, config.From, rcpts, nil); err != nil {
 				return
 			}
 			defer func() {
diff --git a/lib/send/jmap.go b/lib/send/jmap.go
index 5f679b43..0f6fea12 100644
--- a/lib/send/jmap.go
+++ b/lib/send/jmap.go
@@ -11,7 +11,7 @@ import (
 
 func newJmapSender(
 	worker *types.Worker, from *mail.Address, rcpts []*mail.Address,
-	copyTo string,
+	copyTo []string,
 ) (io.WriteCloser, error) {
 	var writer io.WriteCloser
 	done := make(chan error)
diff --git a/lib/send/sender.go b/lib/send/sender.go
index 87ca4745..a0b008db 100644
--- a/lib/send/sender.go
+++ b/lib/send/sender.go
@@ -16,7 +16,7 @@ import (
 func NewSender(
 	worker *types.Worker, uri *url.URL, domain string,
 	from *mail.Address, rcpts []*mail.Address,
-	copyTo string,
+	copyTo []string,
 ) (io.WriteCloser, error) {
 	protocol, auth, err := parseScheme(uri)
 	if err != nil {
diff --git a/worker/jmap/send.go b/worker/jmap/send.go
index 2fbb8aed..ee626357 100644
--- a/worker/jmap/send.go
+++ b/worker/jmap/send.go
@@ -71,8 +71,11 @@ func (w *JMAPWorker) handleStartSend(msg *types.StartSendingMessage) error {
 			w.rolePatch(mailbox.RoleSent):   true,
 			w.rolePatch(mailbox.RoleDrafts): nil,
 		}
-		if copyTo := w.dir2mbox[msg.CopyTo]; copyTo != "" {
-			onSuccess[w.mboxPatch(copyTo)] = true
+		for _, dir := range msg.CopyTo {
+			mbox, ok := w.dir2mbox[dir]
+			if ok && mbox != w.roles[mailbox.RoleSent] {
+				onSuccess[w.mboxPatch(mbox)] = true
+			}
 		}
 		// Create the submission
 		req.Invoke(&emailsubmission.Set{
diff --git a/worker/types/messages.go b/worker/types/messages.go
index 0d0a187a..0174b544 100644
--- a/worker/types/messages.go
+++ b/worker/types/messages.go
@@ -226,7 +226,7 @@ type StartSendingMessage struct {
 	Message
 	From   *mail.Address
 	Rcpts  []*mail.Address
-	CopyTo string
+	CopyTo []string
 }
 
 // Messages