diff --git a/app/app.go b/app/app.go
index c1a1224..af243f8 100644
--- a/app/app.go
+++ b/app/app.go
@@ -22,28 +22,30 @@ import (
 
 const (
 	// Handlers keys
-	InvalidRequest   string = "invalid_request"
-	MalformedJSON    string = "malformed_json"
-	TokenBlacklisted string = "token_blacklisted"
-	TokenInvalid     string = "token_invalid"
-	ValidationFailed string = "validation_failed"
-	UntilBeforeTo    string = "until_before_to"
-	InternalError    string = "internal_error"
-	NotFound         string = "not_found"
-	Created          string = "created"
-	Updated          string = "updated"
-	Deleted          string = "deleted"
-	Enabled          string = "enabled"
-	Disabled         string = "disabled"
-	Retrieved        string = "retrieved"
-	ErrorCreating    string = "error_creating"
-	ErrorUpdating    string = "error_updating"
-	ErrorEnabling    string = "error_enabling"
-	ErrorDisabling   string = "error_disabling"
-	ErrorGetting     string = "error_getting"
-	ErrorGettingAll  string = "error_getting_all"
-	InvalidEntityID  string = "invalid_entity_id"
-	NotImplemented   string = "not_implemented"
+	InvalidRequest    string = "invalid_request"
+	MalformedJSON     string = "malformed_json"
+	TokenBlacklisted  string = "token_blacklisted"
+	TokenInvalid      string = "token_invalid"
+	ValidationFailed  string = "validation_failed"
+	UntilBeforeTo     string = "until_before_to"
+	InternalError     string = "internal_error"
+	NotFound          string = "not_found"
+	Created           string = "created"
+	Updated           string = "updated"
+	Deleted           string = "deleted"
+	Enabled           string = "enabled"
+	Disabled          string = "disabled"
+	Retrieved         string = "retrieved"
+	ErrorCreating     string = "error_creating"
+	ErrorUpdating     string = "error_updating"
+	ErrorEnabling     string = "error_enabling"
+	ErrorDisabling    string = "error_disabling"
+	ErrorGetting      string = "error_getting"
+	ErrorGettingAll   string = "error_getting_all"
+	ErrorMailing      string = "error_mailing"
+	InvalidEntityID   string = "invalid_entity_id"
+	NotImplemented    string = "not_implemented"
+	NotPassValidation string = "not_pass_validation"
 
 	// User keys
 	UserUsernameKey       string = "username_key"
diff --git a/go.mod b/go.mod
index 18ca497..1583dfa 100644
--- a/go.mod
+++ b/go.mod
@@ -38,6 +38,6 @@ require (
 	golang.org/x/crypto v0.28.0 // indirect
 	golang.org/x/net v0.30.0 // indirect
 	golang.org/x/sync v0.8.0 // indirect
-	golang.org/x/sys v0.26.0 // indirect
+	golang.org/x/sys v0.28.0 // indirect
 	golang.org/x/text v0.19.0
 )
diff --git a/go.sum b/go.sum
index dc15c5d..1d2e098 100644
--- a/go.sum
+++ b/go.sum
@@ -114,8 +114,8 @@ golang.org/x/net v0.30.0 h1:AcW1SDZMkb8IpzCdQUaIq2sP4sZ4zw+55h6ynffypl4=
 golang.org/x/net v0.30.0/go.mod h1:2wGyMJ5iFasEhkwi13ChkO/t1ECNC4X4eBKkVFyYFlU=
 golang.org/x/sync v0.8.0 h1:3NFvSEYkUoMifnESzZl15y791HH1qU2xm6eCJU5ZPXQ=
 golang.org/x/sync v0.8.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
-golang.org/x/sys v0.26.0 h1:KHjCJyddX0LoSTb3J+vWpupP9p0oznkqVk/IfjymZbo=
-golang.org/x/sys v0.26.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.28.0 h1:Fksou7UEQUWlKvIdsqzJmUmCX3cZuD2+P3XyyzwMhlA=
+golang.org/x/sys v0.28.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/text v0.19.0 h1:kTxAhCbGbxhK0IwgSKiMO5awPoDQ0RpfiVYBfK860YM=
 golang.org/x/text v0.19.0/go.mod h1:BuEKDfySbSR4drPmRPG/7iBdf8hvFMuRexcpahXilzY=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
diff --git a/utils/utils.go b/utils/utils.go
index a591042..5a67646 100644
--- a/utils/utils.go
+++ b/utils/utils.go
@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"log/slog"
 	"regexp"
+	"strconv"
 	"strings"
 	"time"
 	"unicode"
@@ -61,3 +62,15 @@ func Slugify(s string) string {
 func isMn(r rune) bool {
 	return unicode.Is(unicode.Mn, r)
 }
+
+func FormatDateSpanish(date time.Time) string {
+	months := []string{"enero", "febrero", "marzo", "abril", "mayo", "junio", "julio", "agosto", "septiembre", "octubre", "noviembre", "diciembre"}
+	days := []string{"domingo", "lunes", "martes", "miércoles", "jueves", "viernes", "sábado"}
+
+	dayName := days[date.Weekday()]
+	day := date.Day()
+	month := months[date.Month()-1]
+	year := date.Year()
+
+	return dayName + ", " + strconv.Itoa(day) + " de " + month + " de " + strconv.Itoa(year)
+}