diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..4bac168
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,5 @@
+*.o
+*.so
+*.so.*
+Makefile
+moc_*.cpp
diff --git a/src/SMTPEmail.pro b/src/SMTPEmail.pro
index 4abab5f..df601fd 100644
--- a/src/SMTPEmail.pro
+++ b/src/SMTPEmail.pro
@@ -48,7 +48,6 @@ HEADERS  += \
     mimebase64encoder.h \
     mimeqpencoder.h \
     mimeqpformatter.h \
-    mimepart.cpp.autosave \
     mimebase64formatter.h \
     mimecontentformatter.h
 
diff --git a/src/emailaddress.h b/src/emailaddress.h
index 44f1a2e..e3eb6e5 100644
--- a/src/emailaddress.h
+++ b/src/emailaddress.h
@@ -20,11 +20,10 @@
 #define EMAILADDRESS_H
 
 #include "smtpmime_global.h"
-#include <QObject>
+#include <QString>
 
-class SMTP_MIME_EXPORT EmailAddress : public QObject
+class SMTP_MIME_EXPORT EmailAddress
 {
-    Q_OBJECT
 public:
 
     /* [1] Constructors and Destructors */
diff --git a/src/mimeattachment.h b/src/mimeattachment.h
index 90a5780..8b8e4cd 100644
--- a/src/mimeattachment.h
+++ b/src/mimeattachment.h
@@ -20,14 +20,12 @@
 #define MIMEATTACHMENT_H
 
 
-#include <QFile>
 #include "smtpmime_global.h"
 #include "mimepart.h"
 #include "mimefile.h"
 
 class SMTP_MIME_EXPORT MimeAttachment : public MimeFile
 {
-    Q_OBJECT
 public:
 
     /* [1] Constructors and Destructors */
diff --git a/src/mimefile.h b/src/mimefile.h
index 8540c77..0ec74f2 100644
--- a/src/mimefile.h
+++ b/src/mimefile.h
@@ -19,13 +19,13 @@
 #ifndef MIMEFILE_H
 #define MIMEFILE_H
 
-#include <QFile>
 #include "mimepart.h"
 #include "smtpmime_global.h"
 
+class QFile;
+
 class SMTP_MIME_EXPORT MimeFile : public MimePart
 {
-    Q_OBJECT
 public:
 
     /* [1] Constructors and Destructors */
diff --git a/src/mimehtml.h b/src/mimehtml.h
index 5d59bc4..b8b7098 100644
--- a/src/mimehtml.h
+++ b/src/mimehtml.h
@@ -24,7 +24,6 @@
 
 class SMTP_MIME_EXPORT MimeHtml : public MimeText
 {
-    Q_OBJECT
 public:
 
     /* [1] Constructors and Destructors */
diff --git a/src/mimemultipart.cpp b/src/mimemultipart.cpp
index b3a70d1..8f14144 100644
--- a/src/mimemultipart.cpp
+++ b/src/mimemultipart.cpp
@@ -17,6 +17,7 @@
 */
 
 #include "mimemultipart.h"
+#include <QIODevice>
 #include <QTime>
 #include <QCryptographicHash>
 
diff --git a/src/mimemultipart.h b/src/mimemultipart.h
index 6355347..f4770c4 100644
--- a/src/mimemultipart.h
+++ b/src/mimemultipart.h
@@ -20,13 +20,11 @@
 #define MIMEMULTIPART_H
 
 #include <QList>
-#include <QTextStream>
 #include "smtpmime_global.h"
 #include "mimepart.h"
 
 class SMTP_MIME_EXPORT MimeMultiPart : public MimePart
 {
-    Q_OBJECT
 public:
 
     /* [0] Enums */
diff --git a/src/mimepart.h b/src/mimepart.h
index 49bbb19..bb3d65a 100644
--- a/src/mimepart.h
+++ b/src/mimepart.h
@@ -19,13 +19,14 @@
 #ifndef MIMEPART_H
 #define MIMEPART_H
 
-#include <QObject>
-#include <QTextStream>
 #include "smtpmime_global.h"
+#include <QByteArray>
+#include <QString>
 
-class SMTP_MIME_EXPORT MimePart : public QObject
+class QIODevice;
+
+class SMTP_MIME_EXPORT MimePart
 {
-    Q_OBJECT
 public:
 
     /* [0] Enumerations */
@@ -43,7 +44,7 @@ public:
     /* [1] Constructors and Destructors */
 
     MimePart();
-    ~MimePart();
+    virtual ~MimePart();
 
     /* [1] --- */
 
diff --git a/src/quotedprintable.cpp b/src/quotedprintable.cpp
index e7e130c..1d83ddb 100644
--- a/src/quotedprintable.cpp
+++ b/src/quotedprintable.cpp
@@ -18,49 +18,63 @@
 
 #include "quotedprintable.h"
 
-QString& QuotedPrintable::encode(const QByteArray &input)
+QString QuotedPrintable::encode(const QByteArray &input)
 {
-    QString *output = new QString();
+    QString output;
 
     char byte;
-    const char hex[] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
+    static const char hex[] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
 
     for (int i = 0; i < input.length() ; ++i)
     {
         byte = input[i];
 
-        if ((byte == 0x20) || (byte >= 33) && (byte <= 126) && (byte != 61)) {
-            output->append(byte);
+        if ((byte == 0x20) || ((byte >= 33) && (byte <= 126) && (byte != 61))) {
+            output.append(byte);
         }
         else {
-            output->append('=');
-            output->append(hex[((byte >> 4) & 0x0F)]);
-            output->append(hex[(byte & 0x0F)]);
+            output.append('=').append(hex[((byte >> 4) & 0x0F)]).append(hex[(byte & 0x0F)]);
         }
     }
 
-    return *output;
+    return output;
 }
 
 
-QByteArray& QuotedPrintable::decode(const QString &input)
+QByteArray QuotedPrintable::decode(const QString &input)
 {
-    //                    0  1  2  3  4  5  6  7  8  9  :  ;  <  =  >  ?  @  A   B   C   D   E   F
-    const int hexVal[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0, 0, 0, 0, 0, 0, 10, 11, 12, 13, 14, 15};
+    //                           0  1  2  3  4  5  6  7  8  9  :  ;  <  =  >  ?  @  A   B   C   D   E   F
+    static const int hexVal[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0, 0, 0, 0, 0, 0, 10, 11, 12, 13, 14, 15};
 
-    QByteArray *output = new QByteArray();
+    QByteArray output;
 
-    for (int i = 0; i < input.length(); ++i)
+    int len = input.length();
+    int i;
+    for (i = 0; i < len-2; ++i)
     {
-        if (input.at(i).toAscii() == '=')
+        if (input.at(i).toLatin1() == '=')
         {
-            output->append((hexVal[input.at(++i).toAscii() - '0'] << 4) + hexVal[input.at(++i).toAscii() - '0']);
+            int x = input.at(i+1).toLatin1() - '0';
+            int y = input.at(i+2).toLatin1() - '0';
+            if (x >= 0 && y >= 0 && x < 23 && y < 23) {
+                output.append(char((hexVal[x] << 4) + hexVal[y]));
+            }
+            else {
+                output.append('=').append(char(x + '0')).append(char(y + '0'));
+            }
+
+            i += 2;
         }
         else
         {
-            output->append(input.at(i).toAscii());
+            output.append(input.at(i).toLatin1());
         }
     }
 
-    return *output;
+    while (i<len) {
+        output.append(input.at(i).toLatin1());
+        ++i;
+    }
+
+    return output;
 }
diff --git a/src/quotedprintable.h b/src/quotedprintable.h
index 5a54dc4..7eb855c 100644
--- a/src/quotedprintable.h
+++ b/src/quotedprintable.h
@@ -19,20 +19,13 @@
 #ifndef QUOTEDPRINTABLE_H
 #define QUOTEDPRINTABLE_H
 
-#include <QObject>
 #include <QByteArray>
+#include <QString>
 #include "smtpmime_global.h"
 
-class SMTP_MIME_EXPORT QuotedPrintable : public QObject
-{
-    Q_OBJECT
-public:
-
-    static QString& encode(const QByteArray &input);
-    static QByteArray& decode(const QString &input);
-
-private:
-    QuotedPrintable();
-};
+namespace QuotedPrintable {
+    SMTP_MIME_EXPORT QString encode(const QByteArray &input);
+    SMTP_MIME_EXPORT QByteArray decode(const QString &input);
+}
 
 #endif // QUOTEDPRINTABLE_H
diff --git a/src/smtpclient.cpp b/src/smtpclient.cpp
index cbbcd5f..39cd786 100644
--- a/src/smtpclient.cpp
+++ b/src/smtpclient.cpp
@@ -617,6 +617,8 @@ void SmtpClient::socketStateChanged(QAbstractSocket::SocketState state) {
 void SmtpClient::socketError(QAbstractSocket::SocketError socketError) {
 #ifndef QT_NO_DEBUG
     qDebug() << "SocketError:" << socketError << socket->error();
+#else
+    Q_UNUSED(socketError);
 #endif
     emit error(SocketError);
 }
diff --git a/test/main.cpp b/test/main.cpp
index 3d3900b..1a51960 100644
--- a/test/main.cpp
+++ b/test/main.cpp
@@ -1,4 +1,3 @@
-#include <QtGui/QApplication>
 #include <QCoreApplication>
 #include <QtTest/QTest>
 #include <QDebug>
@@ -6,16 +5,17 @@
 
 bool success = true;
 
-void runTest(QObject *test) {
-    int retVal = QTest::qExec(test);
+static void runTest(QObject *test, int argc, char** argv) {
+    int retVal = QTest::qExec(test, argc, argv);
+    delete test;
     success &= retVal == 0;
 }
 
 int main(int argc, char *argv[])
 {
-    QApplication a(argc, argv);
+    QCoreApplication a(argc, argv);
 
-    runTest(new ConnectionTest());
+    runTest(new ConnectionTest(), argc, argv);
 
     if (success)
         qDebug() << "SUCCESS";
diff --git a/test/test.pro b/test/test.pro
index 499b18e..0641456 100644
--- a/test/test.pro
+++ b/test/test.pro
@@ -4,7 +4,8 @@
 #
 #-------------------------------------------------
 
-QT       += testlib gui
+QT       += testlib
+QT       -= gui
 
 TARGET = test
 CONFIG   += console