diff --git a/BTCPayServer/HostedServices/StoreEmailRuleProcessorSender.cs b/BTCPayServer/HostedServices/StoreEmailRuleProcessorSender.cs
index 60cb24759..82cb2d1ef 100644
--- a/BTCPayServer/HostedServices/StoreEmailRuleProcessorSender.cs
+++ b/BTCPayServer/HostedServices/StoreEmailRuleProcessorSender.cs
@@ -53,7 +53,7 @@ public class StoreEmailRuleProcessorSender : EventHostedServiceBase
                     var sender = await _emailSenderFactory.GetEmailSender(invoiceEvent.Invoice.StoreId);
                     foreach (UIStoresController.StoreEmailRule actionableRule in actionableRules)
                     {
-                        var recipients = actionableRule.To.Split(",", StringSplitOptions.RemoveEmptyEntries)
+                        var recipients = (actionableRule.To?.Split(",", StringSplitOptions.RemoveEmptyEntries)??Array.Empty<string>())
                             .Select(o => { MailboxAddressValidator.TryParse(o, out var mb); return mb; })
                             .Where(o => o != null)
                             .ToList();