diff --git a/carddav/carddav.go b/carddav/carddav.go
index 6779d10..f7dbf8e 100644
--- a/carddav/carddav.go
+++ b/carddav/carddav.go
@@ -17,12 +17,14 @@ type AddressBook struct {
 }
 
 type AddressBookQuery struct {
-	Props []string
+	Props   []string
+	AllProp bool
 }
 
 type AddressBookMultiGet struct {
-	Paths []string
-	Props []string
+	Paths   []string
+	Props   []string
+	AllProp bool
 }
 
 type AddressObject struct {
diff --git a/carddav/client.go b/carddav/client.go
index 06693a0..0471d72 100644
--- a/carddav/client.go
+++ b/carddav/client.go
@@ -142,10 +142,14 @@ func (c *Client) FindAddressBooks(addressBookHomeSet string) ([]AddressBook, err
 	return l, nil
 }
 
-func encodeAddressPropReq(props []string) (*internal.Prop, error) {
+func encodeAddressPropReq(props []string, allProp bool) (*internal.Prop, error) {
 	var addrDataReq addressDataReq
-	for _, name := range props {
-		addrDataReq.Props = append(addrDataReq.Props, prop{Name: name})
+	if allProp {
+		addrDataReq.Allprop = &struct{}{}
+	} else {
+		for _, name := range props {
+			addrDataReq.Props = append(addrDataReq.Props, prop{Name: name})
+		}
 	}
 
 	getLastModReq := internal.NewRawXMLElement(internal.GetLastModifiedName, nil, nil)
@@ -199,11 +203,13 @@ func decodeAddressList(ms *internal.Multistatus) ([]AddressObject, error) {
 
 func (c *Client) QueryAddressBook(addressBook string, query *AddressBookQuery) ([]AddressObject, error) {
 	var props []string
+	var allProp bool
 	if query != nil {
 		props = query.Props
+		allProp = query.AllProp
 	}
 
-	propReq, err := encodeAddressPropReq(props)
+	propReq, err := encodeAddressPropReq(props, allProp)
 	if err != nil {
 		return nil, err
 	}
@@ -227,11 +233,13 @@ func (c *Client) QueryAddressBook(addressBook string, query *AddressBookQuery) (
 
 func (c *Client) MultiGetAddressBook(path string, multiGet *AddressBookMultiGet) ([]AddressObject, error) {
 	var props []string
+	var allProp bool
 	if multiGet != nil {
 		props = multiGet.Props
+		allProp = multiGet.AllProp
 	}
 
-	propReq, err := encodeAddressPropReq(props)
+	propReq, err := encodeAddressPropReq(props, allProp)
 	if err != nil {
 		return nil, err
 	}
diff --git a/carddav/elements.go b/carddav/elements.go
index 799da11..b418abf 100644
--- a/carddav/elements.go
+++ b/carddav/elements.go
@@ -82,9 +82,9 @@ func newProp(name string, noValue bool) *internal.RawXMLValue {
 
 // https://tools.ietf.org/html/rfc6352#section-10.4
 type addressDataReq struct {
-	XMLName xml.Name `xml:"urn:ietf:params:xml:ns:carddav address-data"`
-	Props   []prop   `xml:"prop"`
-	// TODO: allprop
+	XMLName xml.Name  `xml:"urn:ietf:params:xml:ns:carddav address-data"`
+	Props   []prop    `xml:"prop"`
+	Allprop *struct{} `xml:"allprop"`
 }
 
 // https://tools.ietf.org/html/rfc6352#section-10.4.2
diff --git a/carddav/server.go b/carddav/server.go
index 6a67283..671d3d4 100644
--- a/carddav/server.go
+++ b/carddav/server.go
@@ -72,6 +72,10 @@ func (h *Handler) handleQuery(w http.ResponseWriter, query *addressbookQuery) er
 		if err := query.Prop.Decode(&addressData); err != nil && !internal.IsMissingProp(err) {
 			return err
 		}
+		if addressData.Allprop != nil && len(addressData.Props) > 0 {
+			return internal.HTTPErrorf(http.StatusBadRequest, "carddav: only one of allprop or prop can be specified in address-data")
+		}
+		q.AllProp = addressData.Allprop != nil
 		for _, p := range addressData.Props {
 			q.Props = append(q.Props, p.Name)
 		}
@@ -104,6 +108,8 @@ func (h *Handler) handleQuery(w http.ResponseWriter, query *addressbookQuery) er
 func (h *Handler) handleMultiget(w http.ResponseWriter, multiget *addressbookMultiget) error {
 	var resps []internal.Response
 	for _, href := range multiget.Hrefs {
+		// TODO: only get a subset of the vCard fields, depending on the
+		// multiget query
 		ao, err := h.Backend.GetAddressObject(href.Path)
 		if err != nil {
 			return err // TODO: create internal.Response with error