diff --git a/web/constants.go b/web/constants.go
new file mode 100644
index 0000000..e51c7dc
--- /dev/null
+++ b/web/constants.go
@@ -0,0 +1,8 @@
+package web
+
+const (
+	ChatIOSRedirectURL     = "https://apps.apple.com/fr/app/twake-chat/id6473384641"
+	ChatAndroidRedirectURL = "https://play.google.com/store/apps/details?id=app.twake.android.chat"
+	ChatFallbackURL        = "https://twake.app"
+	ChatInvitePrefix       = "/chat/@"
+)
diff --git a/web/matrix.go b/web/matrix.go
new file mode 100644
index 0000000..9e20b69
--- /dev/null
+++ b/web/matrix.go
@@ -0,0 +1,39 @@
+package web
+
+import (
+	"strings"
+)
+
+func ExtractMatrixID(path string) string {
+	if !strings.HasPrefix(path, ChatInvitePrefix) {
+		return ""
+	}
+	return strings.TrimPrefix(path, "/chat/")
+}
+
+func ExtractDomainFromMatrixID(matrixID string) string {
+	if matrixID == "" || !strings.Contains(matrixID, ":") {
+		return ""
+	}
+	parts := strings.Split(matrixID, ":")
+	if len(parts) != 2 {
+		return ""
+	}
+	domain := parts[1]
+	return domain
+}
+
+func GetSignUpURLForDomain(domain string) string {
+	switch domain {
+	case "twake.app":
+		return "sign-up.twake.app"
+	case "stg.lin-saas.com":
+		return "sign-up.stg.lin-saas.com"
+	case "cozy.lin-saas.com":
+		return "sign-up.cozy.lin-saas.com"
+	case "qa.lin-saas.com":
+		return "sign-up.qa.lin-saas.com"
+	default:
+		return ""
+	}
+}
diff --git a/web/matrix_test.go b/web/matrix_test.go
new file mode 100644
index 0000000..a88e127
--- /dev/null
+++ b/web/matrix_test.go
@@ -0,0 +1,85 @@
+package web
+
+import (
+	"testing"
+)
+
+func TestExtractMatrixID(t *testing.T) {
+	tests := []struct {
+		name    string
+		path    string
+		want    string
+		wantErr bool
+	}{
+		{
+			name:    "Valid chat invite path",
+			path:    "/chat/@jdoe:twake.app",
+			want:    "@jdoe:twake.app",
+			wantErr: false,
+		},
+		{
+			name:    "Invalid path - missing prefix",
+			path:    "/@jdoe:twake.app",
+			want:    "",
+			wantErr: true,
+		},
+		{
+			name:    "Empty path",
+			path:    "",
+			want:    "",
+			wantErr: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := ExtractMatrixID(tt.path)
+			if tt.wantErr && got != "" {
+				t.Errorf("ExtractMatrixID() expected error but got result: %v", got)
+			}
+			if !tt.wantErr && got != tt.want {
+				t.Errorf("ExtractMatrixID() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func TestExtractDomainFromMatrixID(t *testing.T) {
+	tests := []struct {
+		name     string
+		matrixID string
+		want     string
+		wantErr  bool
+	}{
+		{
+			name:     "Valid Matrix ID",
+			matrixID: "@jdoe:twake.app",
+			want:     "twake.app",
+			wantErr:  false,
+		},
+		{
+			name:     "Invalid Matrix ID - no colon",
+			matrixID: "@jdoe",
+			want:     "",
+			wantErr:  true,
+		},
+		{
+			name:     "Empty Matrix ID",
+			matrixID: "",
+			want:     "",
+			wantErr:  true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := ExtractDomainFromMatrixID(tt.matrixID)
+			if tt.wantErr && got != "" {
+				t.Errorf("ExtractDomainFromMatrixID() expected error but got result: %v", got)
+			}
+			if !tt.wantErr && got != tt.want {
+				t.Errorf("ExtractDomainFromMatrixID() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
diff --git a/web/universal_links.go b/web/universal_links.go
index 0d29c98..59d0f11 100644
--- a/web/universal_links.go
+++ b/web/universal_links.go
@@ -30,6 +30,66 @@ func universalLink(c echo.Context) error {
 	return c.String(http.StatusOK, content.String())
 }
 
+func isChatInvite(c echo.Context) bool {
+	requestPath := c.Request().URL.Path
+	return strings.HasPrefix(requestPath, ChatInvitePrefix)
+}
+
+func createDirectChatURL(baseURL, requestPath string) string {
+	parsedURL := url.URL{
+		Scheme: "https",
+		Host:   baseURL,
+		Path:   "/",
+	}
+
+	query := parsedURL.Query()
+	query.Set("redirect", "true")
+	query.Set("slug", "chat")
+	query.Set("path", "/#/bridge/web/#"+requestPath)
+
+	parsedURL.RawQuery = query.Encode()
+	return parsedURL.String()
+}
+
+func redirectChatInvite(c echo.Context) (bool, error) {
+	userAgent := c.Request().UserAgent()
+	platform := GetPlatformFromUserAgent(userAgent)
+
+	var redirectURL string
+	switch platform {
+	case "ios":
+		redirectURL = ChatIOSRedirectURL
+	case "android":
+		redirectURL = ChatAndroidRedirectURL
+	case "web":
+		// Extract Matrix ID and domain to determine the sign-up URL
+		requestPath := c.Request().URL.Path
+		matrixID := ExtractMatrixID(requestPath)
+		if matrixID == "" {
+			redirectURL = ChatFallbackURL
+			break
+		}
+
+		domain := ExtractDomainFromMatrixID(matrixID)
+		if domain == "" {
+			redirectURL = ChatFallbackURL
+			break
+		}
+
+		signUpURL := GetSignUpURLForDomain(domain)
+		if signUpURL == "" {
+			redirectURL = ChatFallbackURL
+			break
+		}
+
+		redirectURL = createDirectChatURL(signUpURL, requestPath)
+	default:
+		redirectURL = ChatFallbackURL
+	}
+
+	return true, c.Redirect(http.StatusSeeOther, redirectURL)
+}
+
 func universalLinkRedirect(c echo.Context) error {
 	space, err := getSpaceFromHost(c)
 	if err != nil {
@@ -38,6 +98,12 @@ func universalLinkRedirect(c echo.Context) error {
 	spacePrefix := space.GetPrefix()
 	fallback := c.QueryParam("fallback")
 
+	// Custom redirection for chat app invite links
+	if isChatInvite(c) {
+		_, err := redirectChatInvite(c)
+		return err
+	}
+
 	// The following code has been made to handle an iOS bug during JSON recovery.
 	// It should be removed if a fix is found one day.
 	// See https://openradar.appspot.com/33893852
diff --git a/web/universal_links_test.go b/web/universal_links_test.go
new file mode 100644
index 0000000..9069909
--- /dev/null
+++ b/web/universal_links_test.go
@@ -0,0 +1,36 @@
+package web
+
+import (
+	"testing"
+)
+
+func TestCreateDirectChatURL(t *testing.T) {
+	tests := []struct {
+		name    string
+		baseURL string
+		path    string
+		want    string
+	}{
+		{
+			name:    "Basic chat invite URL",
+			baseURL: "sign-up.twake.app",
+			path:    "/chat/@jdoe:twake.app",
+			want:    "https://sign-up.twake.app/?path=%2F%23%2Fbridge%2Fweb%2F%23%2Fchat%2F%40jdoe%3Atwake.app&redirect=true&slug=chat",
+		},
+		{
+			name:    "Staging chat invite URL",
+			baseURL: "sign-up.stg.lin-saas.com",
+			path:    "/chat/@jdoe:stg.lin-saas.com",
+			want:    "https://sign-up.stg.lin-saas.com/?path=%2F%23%2Fbridge%2Fweb%2F%23%2Fchat%2F%40jdoe%3Astg.lin-saas.com&redirect=true&slug=chat",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := createDirectChatURL(tt.baseURL, tt.path)
+			if got != tt.want {
+				t.Errorf("createDirectChatURL() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
diff --git a/web/user_agent.go b/web/user_agent.go
new file mode 100644
index 0000000..542cda3
--- /dev/null
+++ b/web/user_agent.go
@@ -0,0 +1,19 @@
+package web
+
+import "strings"
+
+func GetPlatformFromUserAgent(userAgent string) string {
+	userAgentLower := strings.ToLower(userAgent)
+
+	if strings.Contains(userAgentLower, "iphone") ||
+		strings.Contains(userAgentLower, "ipad") ||
+		strings.Contains(userAgentLower, "ipod") {
+		return "ios"
+	}
+
+	if strings.Contains(userAgentLower, "android") {
+		return "android"
+	}
+
+	return "web"
+}
diff --git a/web/user_agent_test.go b/web/user_agent_test.go
new file mode 100644
index 0000000..35a1fb6
--- /dev/null
+++ b/web/user_agent_test.go
@@ -0,0 +1,85 @@
+package web
+
+import "testing"
+
+func TestGetPlatformFromUserAgent(t *testing.T) {
+	tests := []struct {
+		name      string
+		userAgent string
+		want      string
+	}{
+		// iOS
+		{
+			name:      "iPhone",
+			userAgent: "Mozilla/5.0 (iPhone; CPU iPhone OS 14_6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.1.1 Mobile/15E148 Safari/604.1",
+			want:      "ios",
+		},
+		{
+			name:      "iPad",
+			userAgent: "Mozilla/5.0 (iPad; CPU OS 14_6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.0 Mobile/15E148 Safari/604.1",
+			want:      "ios",
+		},
+		{
+			name:      "iPod",
+			userAgent: "Mozilla/5.0 (iPod touch; CPU iPhone OS 12_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0 Mobile/15E148 Safari/604.1",
+			want:      "ios",
+		},
+		// Android
+		{
+			name:      "Android phone",
+			userAgent: "Mozilla/5.0 (Linux; Android 11; Pixel 5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.91 Mobile Safari/537.36",
+			want:      "android",
+		},
+		{
+			name:      "Android tablet",
+			userAgent: "Mozilla/5.0 (Linux; Android 10; SM-T510) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.105 Safari/537.36",
+			want:      "android",
+		},
+		// Web
+		{
+			name:      "Chrome on Windows",
+			userAgent: "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36",
+			want:      "web",
+		},
+		{
+			name:      "Firefox on macOS",
+			userAgent: "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:89.0) Gecko/20100101 Firefox/89.0",
+			want:      "web",
+		},
+		{
+			name:      "Safari on macOS",
+			userAgent: "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.1.1 Safari/605.1.15",
+			want:      "web",
+		},
+		{
+			name:      "Edge on Windows",
+			userAgent: "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36 Edg/91.0.864.59",
+			want:      "web",
+		},
+		{
+			name:      "Chrome on Linux",
+			userAgent: "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 Safari/537.36",
+			want:      "web",
+		},
+		// Edge cases
+		{
+			name:      "Empty user agent",
+			userAgent: "",
+			want:      "web",
+		},
+		{
+			name:      "Unknown user agent",
+			userAgent: "SomeBot/1.0",
+			want:      "web",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := GetPlatformFromUserAgent(tt.userAgent)
+			if got != tt.want {
+				t.Errorf("GetPlatformFromUserAgent() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}