diff --git a/pachca.go b/pachca.go
index 1982d86..00e744a 100644
--- a/pachca.go
+++ b/pachca.go
@@ -14,7 +14,6 @@ import (
 	"mime/multipart"
 	"os"
 	"regexp"
-	"slices"
 	"strconv"
 	"strings"
 	"time"
@@ -321,20 +320,29 @@ type ChatFilter struct {
 
 // UserRequest is a struct with information needed to create or modify a user
 type UserRequest struct {
-	Email           string     `json:"email"`
-	FirstName       string     `json:"first_name,omitempty"`
-	LastName        string     `json:"last_name,omitempty"`
-	Nickname        string     `json:"nickname,omitempty"`
-	Role            UserRole   `json:"role,omitempty"`
-	PhoneNumber     string     `json:"phone_number,omitempty"`
-	Title           string     `json:"title,omitempty"`
-	Department      string     `json:"department,omitempty"`
-	Properties      Properties `json:"custom_properties,omitempty"`
-	Tags            []string   `json:"list_tags,omitempty"`
-	IsSuspended     bool       `json:"suspended,omitempty"`
-	SkipEmailNotify bool       `json:"skip_email_notify,omitempty"`
+	Email           string           `json:"email"`
+	FirstName       string           `json:"first_name,omitempty"`
+	LastName        string           `json:"last_name,omitempty"`
+	Nickname        string           `json:"nickname,omitempty"`
+	Role            UserRole         `json:"role,omitempty"`
+	PhoneNumber     string           `json:"phone_number,omitempty"`
+	Title           string           `json:"title,omitempty"`
+	Department      string           `json:"department,omitempty"`
+	Properties      PropertyRequests `json:"custom_properties,omitempty"`
+	Tags            []string         `json:"list_tags,omitempty"`
+	IsSuspended     bool             `json:"suspended,omitempty"`
+	SkipEmailNotify bool             `json:"skip_email_notify,omitempty"`
 }
 
+// PropertyRequest is a struct with property info
+type PropertyRequest struct {
+	ID    uint64 `json:"id"`
+	Value string `json:"value"`
+}
+
+// PropertyRequests is a slice with properties requests
+type PropertyRequests []*PropertyRequest
+
 // ChatRequest is a struct with information needed to create or modify a chat
 type ChatRequest struct {
 	Name      string   `json:"name"`
@@ -444,6 +452,30 @@ func NewClient(token string) (*Client, error) {
 	}, nil
 }
 
+// NewPropertyRequest creates new custom property
+func NewPropertyRequest(id uint64, value any) *PropertyRequest {
+	var v string
+
+	switch t := value.(type) {
+	case time.Time:
+		v = formatDate(t.UTC())
+
+	case int, int8, int16, int32, int64, uint, uint8, uint16, uint32, uint64:
+		v = fmt.Sprintf("%d", value)
+
+	case float32:
+		v = fmt.Sprintf("%d", int64(t))
+
+	case float64:
+		v = fmt.Sprintf("%d", int64(t))
+
+	default:
+		v = fmt.Sprintf("%v", value)
+	}
+
+	return &PropertyRequest{ID: id, Value: v}
+}
+
 // ValidateToken validates API access token
 func ValidateToken(token string) error {
 	switch {
@@ -1588,8 +1620,10 @@ func (p Properties) HasAny(name ...string) bool {
 
 // Find returns custom property with given name
 func (p Properties) Find(name string) *Property {
+	name = strings.ToLower(name)
+
 	for _, pp := range p {
-		if pp.Name == name {
+		if strings.ToLower(pp.Name) == name {
 			return pp
 		}
 	}
@@ -1599,9 +1633,11 @@ func (p Properties) Find(name string) *Property {
 
 // FindAny returns first found property with one of given names
 func (p Properties) FindAny(name ...string) *Property {
-	for _, pp := range p {
-		if slices.Contains(name, pp.Name) {
-			return pp
+	for _, n := range name {
+		p := p.Find(n)
+
+		if p != nil {
+			return p
 		}
 	}
 
@@ -1764,8 +1800,11 @@ func (u Users) InChat(chat *Chat) Users {
 
 // Find returns user with given nickname or email
 func (u Users) Find(nicknameOrEmail string) *User {
+	nicknameOrEmail = strings.ToLower(nicknameOrEmail)
+
 	for _, uu := range u {
-		if uu.Nickname == nicknameOrEmail || uu.Email == nicknameOrEmail {
+		if strings.ToLower(uu.Nickname) == nicknameOrEmail ||
+			strings.ToLower(uu.Email) == nicknameOrEmail {
 			return uu
 		}
 	}
@@ -1877,8 +1916,10 @@ func (c Chats) Get(id uint64) *Chat {
 
 // Find returns chat with given name
 func (c Chats) Find(name string) *Chat {
+	name = strings.ToLower(name)
+
 	for _, cc := range c {
-		if cc.Name == name {
+		if strings.ToLower(cc.Name) == name {
 			return cc
 		}
 	}
@@ -1949,6 +1990,30 @@ func (t Tags) Get(id uint64) *Tag {
 	return nil
 }
 
+// Find returns tag with given name
+func (t Tags) Find(name string) *Tag {
+	name = strings.ToLower(name)
+
+	for _, tt := range t {
+		if strings.ToLower(tt.Name) == name {
+			return tt
+		}
+	}
+
+	return nil
+}
+
+// Names returns names of all tags
+func (t Tags) Names() []string {
+	var result []string
+
+	for _, tt := range t {
+		result = append(result, tt.Name)
+	}
+
+	return result
+}
+
 // InChat only returns tags that are present in the given chat
 func (t Tags) InChat(chat *Chat) Tags {
 	if chat == nil {
diff --git a/pachca_test.go b/pachca_test.go
index 20a6cd7..51bc462 100644
--- a/pachca_test.go
+++ b/pachca_test.go
@@ -163,6 +163,15 @@ func (s *PachcaSuite) TestNilClient(c *C) {
 	c.Assert(err, Equals, ErrNilClient)
 }
 
+func (s *PachcaSuite) TestNewPropertyRequest(c *C) {
+	c.Assert(NewPropertyRequest(1, "test").Value, Equals, "test")
+	c.Assert(NewPropertyRequest(1, 100).Value, Equals, "100")
+	c.Assert(NewPropertyRequest(1, float32(100.12)).Value, Equals, "100")
+	c.Assert(NewPropertyRequest(1, float64(100.12)).Value, Equals, "100")
+	c.Assert(NewPropertyRequest(1, time.Date(2020, 1, 1, 12, 0, 0, 0, time.UTC)).Value, Equals, "2020-01-01T12:00:00Z")
+	c.Assert(NewPropertyRequest(1, true).Value, Equals, "true")
+}
+
 func (s *PachcaSuite) TestErrors(c *C) {
 	cc, err := NewClient("YQlf-6Vce7jM1RMZZUs_iWKYPt24PeR4c7k_RwzqjI5")
 	c.Assert(cc, NotNil)
@@ -346,7 +355,7 @@ func (s *PachcaSuite) TestPropertiesHelpers(c *C) {
 
 	_, err = p.Find("test5").ToInt()
 	c.Assert(err, IsNil)
-	_, err = p.Find("test2").ToInt()
+	_, err = p.Find("TEST2").ToInt()
 	c.Assert(err, NotNil)
 
 	var pp *Property
@@ -399,7 +408,7 @@ func (s *PachcaSuite) TestUsersHelpers(c *C) {
 
 	c.Assert(uu.Find("test"), IsNil)
 	c.Assert(uu.Find("j.doe"), NotNil)
-	c.Assert(uu.Find("test@example.com"), NotNil)
+	c.Assert(uu.Find("TEST@EXAMPLE.COM"), NotNil)
 	c.Assert(uu.Get(100), IsNil)
 	c.Assert(uu.Get(6).ID, Equals, uint64(6))
 
@@ -421,7 +430,7 @@ func (s *PachcaSuite) TestChatsHelpers(c *C) {
 	c.Assert(cc.Get(100), IsNil)
 
 	c.Assert(cc.Find("test"), IsNil)
-	c.Assert(cc.Find("test1"), NotNil)
+	c.Assert(cc.Find("TEST1"), NotNil)
 
 	c.Assert(cc.Public()[0].ID, Equals, uint64(3))
 	c.Assert(cc.Channels()[0].ID, Equals, uint64(4))
@@ -440,10 +449,16 @@ func (s *PachcaSuite) TestTagsHelpers(c *C) {
 	c.Assert(tt.Get(1), NotNil)
 	c.Assert(tt.Get(10), IsNil)
 
+	c.Assert(tt.Find("test"), IsNil)
+	c.Assert(tt.Find("test1"), NotNil)
+	c.Assert(tt.Find("test1").ID, Equals, uint64(1))
+
 	chat := &Chat{ID: 1, Name: "test1", GroupTags: []uint64{1, 2, 3, 100, 101, 102}}
 
 	c.Assert(tt.InChat(nil), IsNil)
 	c.Assert(tt.InChat(chat), HasLen, 3)
+
+	c.Assert(tt.Names(), DeepEquals, []string{"Test1", "Test2", "Test3"})
 }
 
 func (s *PachcaSuite) TestURLHelpers(c *C) {