diff --git a/encoding.go b/encoding.go
index 0640d310..77243fc1 100644
--- a/encoding.go
+++ b/encoding.go
@@ -19,9 +19,6 @@ type MIMEVersion string
 // MIMEType represents the MIME type for the mail
 type MIMEType string
 
-// Disposition represents a content disposition for the Msg
-type Disposition string
-
 // List of supported encodings
 const (
 	// EncodingB64 represents the Base64 encoding as specified in RFC 2045.
@@ -163,11 +160,6 @@ const (
 	MIMESMime       MIMEType = `signed; protocol="application/pkcs7-signature"; micalg=sha256`
 )
 
-// List of common content disposition
-const (
-	DispositionSMime Disposition = `attachment; filename="smime.p7s"`
-)
-
 // String is a standard method to convert an Charset into a printable format
 func (c Charset) String() string {
 	return string(c)
@@ -182,8 +174,3 @@ func (c ContentType) String() string {
 func (e Encoding) String() string {
 	return string(e)
 }
-
-// String is a standard method to convert an Disposition into a printable format
-func (d Disposition) String() string {
-	return string(d)
-}
diff --git a/encoding_test.go b/encoding_test.go
index 588cff17..11bf991c 100644
--- a/encoding_test.go
+++ b/encoding_test.go
@@ -126,22 +126,3 @@ func TestCharset_String(t *testing.T) {
 		})
 	}
 }
-
-// TestDisposition_String tests the string method of the Disposition object
-func TestDisposition_String(t *testing.T) {
-	tests := []struct {
-		name string
-		d    Disposition
-		want string
-	}{
-		{"Disposition: S/Mime", DispositionSMime, `attachment; filename="smime.p7s"`},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			if tt.d.String() != tt.want {
-				t.Errorf("wrong string for Disposition returned. Expected: %s, got: %s",
-					tt.want, tt.d.String())
-			}
-		})
-	}
-}
diff --git a/msgwriter.go b/msgwriter.go
index 684c223f..372e1e1a 100644
--- a/msgwriter.go
+++ b/msgwriter.go
@@ -269,9 +269,6 @@ func (mw *msgWriter) writePart(part *Part, charset Charset) {
 		if part.description != "" {
 			mimeHeader.Add(string(HeaderContentDescription), part.description)
 		}
-		if part.disposition != "" {
-			mimeHeader.Add(string(HeaderContentDisposition), part.disposition.String())
-		}
 		mimeHeader.Add(string(HeaderContentType), contentType)
 		mimeHeader.Add(string(HeaderContentTransferEnc), contentTransferEnc)
 		mw.newPart(mimeHeader)
diff --git a/part.go b/part.go
index 005da29a..7c76b7d9 100644
--- a/part.go
+++ b/part.go
@@ -17,7 +17,6 @@ type Part struct {
 	contentType ContentType
 	charset     Charset
 	description string
-	disposition Disposition
 	encoding    Encoding
 	isDeleted   bool
 	writeFunc   func(io.Writer) (int64, error)
@@ -57,11 +56,6 @@ func (p *Part) GetDescription() string {
 	return p.description
 }
 
-// GetDisposition returns the currently set Content-Disposition of the Part
-func (p *Part) GetDisposition() Disposition {
-	return p.disposition
-}
-
 // SetContent overrides the content of the Part with the given string
 func (p *Part) SetContent(content string) {
 	buffer := bytes.NewBufferString(content)
@@ -88,11 +82,6 @@ func (p *Part) SetDescription(description string) {
 	p.description = description
 }
 
-// SetDisposition overrides the Content-Disposition of the Part
-func (p *Part) SetDisposition(disposition Disposition) {
-	p.disposition = disposition
-}
-
 // SetWriteFunc overrides the WriteFunc of the Part
 func (p *Part) SetWriteFunc(writeFunc func(io.Writer) (int64, error)) {
 	p.writeFunc = writeFunc
@@ -124,10 +113,3 @@ func WithPartContentDescription(description string) PartOption {
 		p.description = description
 	}
 }
-
-// WithContentDisposition overrides the default Part Content-Disposition
-func WithContentDisposition(disposition Disposition) PartOption {
-	return func(p *Part) {
-		p.disposition = disposition
-	}
-}