diff --git a/github/user.go b/github/user.go
index 7050d2c..3cb301e 100644
--- a/github/user.go
+++ b/github/user.go
@@ -143,3 +143,8 @@ func (g *GitHub) loadMembers(ctx context.Context) error {
 func (g GitHub) EnterpriseId() string {
 	return g.enterpriseId
 }
+
+func (g GitHub) InviteUser(ctx context.Context, email string, name string) error {
+	slog.WarnContext(ctx, "Method not implemented", "email", email, "name", name, "enterprise", g.config.Enterprise)
+	return nil
+}
diff --git a/sync/sync.go b/sync/sync.go
index f92f555..881a39f 100644
--- a/sync/sync.go
+++ b/sync/sync.go
@@ -5,6 +5,7 @@ import (
 	"github.com/prodyna/sync-enterprise/azure"
 	"github.com/prodyna/sync-enterprise/github"
 	"log/slog"
+	"strings"
 )
 
 type ActionType int
@@ -12,6 +13,7 @@ type ActionType int
 const (
 	// Delete represents a delete action
 	Delete ActionType = iota
+	Invite ActionType = iota
 )
 
 // Action represents a delete action
@@ -27,6 +29,7 @@ func Sync(ctx context.Context, az azure.Azure, gh github.GitHub) (err error) {
 	slog.Info("Syncing users")
 	actions := []Action{}
 	delete := 0
+	invite := 0
 	stay := 0
 
 	// load github users
@@ -60,8 +63,52 @@ func Sync(ctx context.Context, az azure.Azure, gh github.GitHub) (err error) {
 		}
 	}
 
+	slog.Info("Checking if Azure is is already in GitHub")
+	azureUsers, err := az.Users(ctx)
+	if err != nil {
+		return err
+	}
+	for _, azureUser := range azureUsers {
+		slog.Debug("Checking user", "email", azureUser.Email, "name", azureUser.DisplayName)
+		found := false
+		for _, githubUser := range githubUsers {
+			if strings.ToLower(githubUser.Email) == strings.ToLower(azureUser.Email) {
+				found = true
+				break
+			}
+		}
+
+		if !found {
+			slog.Debug("User not in GitHub", "email", azureUser.Email, "name", azureUser.DisplayName)
+			action := &Action{
+				actionType:  Invite,
+				email:       azureUser.Email,
+				displayName: azureUser.DisplayName,
+			}
+			invite++
+			actions = append(actions, *action)
+		}
+	}
+
 	for _, a := range actions {
-		if a.actionType == Delete {
+		switch a.actionType {
+		case Invite:
+			if gh.DryRun() {
+				slog.Info("Dry-run, would invite user",
+					"email", a.email,
+					"name", a.displayName)
+				continue
+			} else {
+				slog.Info("Inviting user",
+					"email", a.email,
+					"name", a.displayName)
+				err = gh.InviteUser(ctx, a.email, a.displayName)
+				if err != nil {
+					continue
+					// return err
+				}
+			}
+		case Delete:
 			if gh.DryRun() {
 				slog.Info("Dry-run, would delete user",
 					"login", a.login,
@@ -85,6 +132,7 @@ func Sync(ctx context.Context, az azure.Azure, gh github.GitHub) (err error) {
 
 	slog.Info("Sync finished",
 		"delete", delete,
+		"invite", invite,
 		"stay", stay)
 
 	return nil