Validated emails are not blank and are properly formatted (regex)

app/controllers/volunteers_controller.rb

@@ -32,14 +32,16 @@ def create
     authorize @volunteer
 
     if @volunteer.save
-      @volunteer.invite!(current_user)
-      # call short io api here
-      raw_token = @volunteer.raw_invitation_token
-      invitation_url = Rails.application.routes.url_helpers.accept_user_invitation_url(invitation_token: raw_token, host: request.base_url)
-      hash_of_short_urls = @volunteer.phone_number.blank? ? {0 => nil, 1 => nil} : handle_short_url([invitation_url, request.base_url + "/users/edit"])
-      body_msg = account_activation_msg("volunteer", hash_of_short_urls)
-      sms_status = deliver_sms_to @volunteer, body_msg
-      redirect_to edit_volunteer_path(@volunteer), notice: sms_acct_creation_notice("volunteer", sms_status)
+      if is_valid_email?(@volunteer.email)
+        @volunteer.invite!(current_user)
+        # call short io api here
+        raw_token = @volunteer.raw_invitation_token
+        invitation_url = Rails.application.routes.url_helpers.accept_user_invitation_url(invitation_token: raw_token, host: request.base_url)
+        hash_of_short_urls = @volunteer.phone_number.blank? ? {0 => nil, 1 => nil} : handle_short_url([invitation_url, request.base_url + "/users/edit"])
+        body_msg = account_activation_msg("volunteer", hash_of_short_urls)
+        sms_status = deliver_sms_to @volunteer, body_msg
+        redirect_to edit_volunteer_path(@volunteer), notice: sms_acct_creation_notice("volunteer", sms_status)
+      end
     else
       render :new, status: :unprocessable_entity
     end
@@ -176,4 +178,9 @@ def send_sms_to(phone_number, body)
       "SMS was not sent to Volunteer due to an error."
     end
   end
+
+  def is_valid_email?(email)
+    return false if email.blank?
+    email.match?(URI::MailTo::EMAIL_REGEXP)
+  end
 end