diff --git a/src/mmshandler.cpp b/src/mmshandler.cpp
index c660ed0..233820c 100644
--- a/src/mmshandler.cpp
+++ b/src/mmshandler.cpp
@@ -2,8 +2,8 @@
 **
 ** This file is part of commhistory-daemon.
 **
-** Copyright (C) 2014-2017 Jolla Ltd.
-** Contact: Slava Monich <slava.monich@jolla.com>
+** Copyright (C) 2014-2020 Jolla Ltd.
+** Copyright (C) 2020 Open Mobile Platform LLC.
 **
 ** This library is free software; you can redistribute it and/or modify it
 ** under the terms of the GNU Lesser General Public License version 2.1 as
@@ -85,7 +85,9 @@ MmsHandler::MmsHandler(QObject* parent)
     , m_imsiSettings(new MDConfGroup("/imsi", this))
 {
     qDBusRegisterMetaType<MmsPart>();
+    qDBusRegisterMetaType<MmsPartFd>();
     qDBusRegisterMetaType<MmsPartList>();
+    qDBusRegisterMetaType<MmsPartFdList>();
     qDBusRegisterMetaType<QList<CommHistory::Event> >();
 
     QOfonoManager* ofonoManager = m_ofonoManager.data();
@@ -776,10 +778,15 @@ void MmsHandler::sendMessageFromEvent(int eventId)
 
 Event::EventStatus MmsHandler::sendMessageFromEvent(Event &event)
 {
-    MmsPartList parts;
+    MmsPartFdList parts;
     foreach (const MessagePart &part, event.messageParts()) {
-        MmsPart p = { part.path(), part.contentType(), part.contentId() };
-        parts.append(p);
+        MmsPartFd p(part.path(), part.contentType(), part.contentId());
+        if (p.file.isOpen()) {
+            parts.append(p);
+        } else {
+            qWarning() << "Failed to open" << part.path();
+            return Event::TemporarilyFailedStatus;
+        }
     }
 
     QString imsi = event.subscriberIdentity();
@@ -795,7 +802,7 @@ Event::EventStatus MmsHandler::sendMessageFromEvent(Event &event)
 
         m_activeEvents.insert(getModemPath(imsi), event.id());
 
-        QDBusPendingCallWatcher *watcher = new QDBusPendingCallWatcher(callEngine("sendMessage", args), this);
+        QDBusPendingCallWatcher *watcher = new QDBusPendingCallWatcher(callEngine("sendMessageFd", args), this);
         watcher->setProperty(kCallPropertyEventId, event.id());
         connect(watcher, SIGNAL(finished(QDBusPendingCallWatcher*)), SLOT(onSendMessageFinished(QDBusPendingCallWatcher*)));
         return Event::SendingStatus;
diff --git a/src/mmspart.cpp b/src/mmspart.cpp
new file mode 100644
index 0000000..fd29d44
--- /dev/null
+++ b/src/mmspart.cpp
@@ -0,0 +1,90 @@
+/******************************************************************************
+**
+** This file is part of commhistory-daemon.
+**
+** Copyright (C) 2014-2020 Jolla Ltd.
+** Copyright (C) 2020 Open Mobile Platform LLC.
+**
+** This library is free software; you can redistribute it and/or modify it
+** under the terms of the GNU Lesser General Public License version 2.1 as
+** published by the Free Software Foundation.
+**
+** This library is distributed in the hope that it will be useful, but
+** WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+** or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
+** License for more details.
+**
+******************************************************************************/
+
+#include "mmspart.h"
+#include <unistd.h>
+
+MmsPartFd::MmsPartFd(const QString path, const QString ct, const QString cid) :
+    file(path),
+    fileName(QFileInfo(path).fileName()),
+    contentType(ct),
+    contentId(cid)
+{
+    file.open(QIODevice::ReadOnly);
+}
+
+MmsPartFd::MmsPartFd(const MmsPartFd &that) :
+    fileName(that.fileName),
+    contentType(that.contentType),
+    contentId(that.contentId)
+{
+    if (that.file.isOpen()) {
+        file.open(dup(that.file.handle()), QIODevice::ReadOnly, QFileDevice::AutoCloseHandle);
+    }
+}
+
+MmsPartFd &MmsPartFd::operator=(const MmsPartFd &that)
+{
+    fileName = that.fileName;
+    contentType = that.contentType;
+    contentId = that.contentId;
+    file.close();
+    if (that.file.isOpen()) {
+        file.open(dup(that.file.handle()), QIODevice::ReadOnly, QFileDevice::AutoCloseHandle);
+    }
+    return *this;
+}
+
+QDBusArgument &operator<<(QDBusArgument &arg, const MmsPart &part)
+{
+    arg.beginStructure();
+    arg << part.fileName << part.contentType << part.contentId;
+    arg.endStructure();
+    return arg;
+}
+
+QDBusArgument &operator<<(QDBusArgument &arg, const MmsPartFd &part)
+{
+    QDBusUnixFileDescriptor fd(part.file.handle());
+    arg.beginStructure();
+    arg << fd << part.fileName << part.contentType << part.contentId;
+    arg.endStructure();
+    return arg;
+}
+
+const QDBusArgument &operator>>(const QDBusArgument &arg, MmsPart &part)
+{
+    arg.beginStructure();
+    arg >> part.fileName >> part.contentType >> part.contentId;
+    arg.endStructure();
+    return arg;
+}
+
+const QDBusArgument &operator>>(const QDBusArgument &arg, MmsPartFd &part)
+{
+    QDBusUnixFileDescriptor fd;
+    arg.beginStructure();
+    arg >> fd >> part.fileName >> part.contentType >> part.contentId;
+    arg.endStructure();
+
+    part.file.close();
+    if (fd.isValid()) {
+        part.file.open(dup(fd.fileDescriptor()), QIODevice::ReadOnly, QFileDevice::AutoCloseHandle);
+    }
+    return arg;
+}
diff --git a/src/mmspart.h b/src/mmspart.h
index f0ef9a7..99ed0c7 100644
--- a/src/mmspart.h
+++ b/src/mmspart.h
@@ -2,7 +2,8 @@
 **
 ** This file is part of commhistory-daemon.
 **
-** Copyright (C) 2014 Jolla Ltd.
+** Copyright (C) 2014-2020 Jolla Ltd.
+** Copyright (C) 2020 Open Mobile Platform LLC.
 **
 ** This library is free software; you can redistribute it and/or modify it
 ** under the terms of the GNU Lesser General Public License version 2.1 as
@@ -13,10 +14,6 @@
 ** or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
 ** License for more details.
 **
-** You should have received a copy of the GNU Lesser General Public License
-** along with this library; if not, write to the Free Software Foundation, Inc.,
-** 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-**
 ******************************************************************************/
 
 #ifndef MMSPART_H
@@ -25,32 +22,38 @@
 #include <QtDBus>
 #include <QString>
 
-struct MmsPart
-{
+struct MmsPart {
+    QString fileName;
+    QString contentType;
+    QString contentId;
+};
+
+class MmsPartFd {
+public:
+    QFile file;
     QString fileName;
     QString contentType;
     QString contentId;
+
+public:
+    MmsPartFd() {}
+    MmsPartFd(const QString path, const QString ct, const QString cid);
+    MmsPartFd(const MmsPartFd &that);
+    MmsPartFd &operator=(const MmsPartFd &that);
 };
 
-inline QDBusArgument& operator<<(QDBusArgument &arg, const MmsPart &part)
-{
-    arg.beginStructure();
-    arg << part.fileName << part.contentType << part.contentId;
-    arg.endStructure();
-    return arg;
-}
-
-inline const QDBusArgument& operator>>(const QDBusArgument &arg, MmsPart &part)
-{
-    arg.beginStructure();
-    arg >> part.fileName >> part.contentType >> part.contentId;
-    arg.endStructure();
-    return arg;
-}
+QDBusArgument &operator<<(QDBusArgument &arg, const MmsPart &part);
+QDBusArgument &operator<<(QDBusArgument &arg, const MmsPartFd &part);
+
+const QDBusArgument &operator>>(const QDBusArgument &arg, MmsPart &part);
+const QDBusArgument &operator>>(const QDBusArgument &arg, MmsPartFd &part);
 
 typedef QList<MmsPart> MmsPartList;
+typedef QList<MmsPartFd> MmsPartFdList;
 
 Q_DECLARE_METATYPE(MmsPart);
+Q_DECLARE_METATYPE(MmsPartFd);
 Q_DECLARE_METATYPE(MmsPartList);
+Q_DECLARE_METATYPE(MmsPartFdList);
 
 #endif // MMSPART_H
diff --git a/src/src.pro b/src/src.pro
index 3fea0db..0c250fd 100644
--- a/src/src.pro
+++ b/src/src.pro
@@ -100,6 +100,7 @@ SOURCES += main.cpp \
            lastdialedcache.cpp \
            fscleanup.cpp \
            mmshandler.cpp \
+           mmspart.cpp \
            messagehandlerbase.cpp \
            smartmessaging.cpp