diff --git a/lightning/src/ln/blinded_payment_tests.rs b/lightning/src/ln/blinded_payment_tests.rs
index 5734c9aa073..9ee464e2575 100644
--- a/lightning/src/ln/blinded_payment_tests.rs
+++ b/lightning/src/ln/blinded_payment_tests.rs
@@ -35,7 +35,15 @@ use crate::util::ser::WithoutLength;
 use crate::util::test_utils;
 use lightning_invoice::RawBolt11Invoice;
 #[cfg(async_payments)] use {
+	crate::blinded_path::BlindedHop,
+	crate::blinded_path::message::{AsyncPaymentsContext, BlindedMessagePath, OffersContext},
+	crate::ln::channelmanager::Verification,
 	crate::ln::inbound_payment,
+	crate::ln::msgs::OnionMessageHandler,
+	crate::offers::nonce::Nonce,
+	crate::onion_message::async_payments::{AsyncPaymentsMessage, AsyncPaymentsMessageHandler, ReleaseHeldHtlc},
+	crate::onion_message::offers::{OffersMessage, OffersMessageHandler},
+	crate::types::features::Bolt12InvoiceFeatures,
 	crate::types::payment::PaymentPreimage,
 };
 
@@ -1416,6 +1424,209 @@ fn custom_tlvs_to_blinded_path() {
 	);
 }
 
+#[test]
+#[cfg(async_payments)]
+fn static_invoice_unknown_required_features() {
+	// Test that we will fail to pay a static invoice with unsupported required features.
+	let secp_ctx = Secp256k1::new();
+	let chanmon_cfgs = create_chanmon_cfgs(3);
+	let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
+	let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
+	let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
+	create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 0);
+	create_unannounced_chan_between_nodes_with_value(&nodes, 1, 2, 1_000_000, 0);
+
+	// Use a dummy blinded path because we don't support retrieving the static invoice from the
+	// recipient's LSP yet.
+	let dummy_blinded_path_to_always_online_node = BlindedMessagePath::from_raw(
+		nodes[1].node.get_our_node_id(), test_utils::pubkey(42),
+		vec![BlindedHop { blinded_node_id: test_utils::pubkey(42), encrypted_payload: vec![42; 32] }]
+	);
+	let (offer_builder, nonce) = nodes[2].node.create_async_receive_offer_builder(vec![dummy_blinded_path_to_always_online_node]).unwrap();
+	let offer = offer_builder.build().unwrap();
+	let static_invoice_unknown_req_features = nodes[2].node.create_static_invoice_builder_for_async_receive_offer(
+		&offer, nonce, None
+	)
+		.unwrap()
+		.features_unchecked(Bolt12InvoiceFeatures::unknown())
+		.build_and_sign(&secp_ctx).unwrap();
+
+	let amt_msat = 5000;
+	let payment_id = PaymentId([1; 32]);
+	// Set the random bytes so we can predict the offer outbound payment context nonce.
+	*nodes[0].keys_manager.override_random_bytes.lock().unwrap() = Some([42; 32]);
+	nodes[0].node.pay_for_offer(&offer, None, Some(amt_msat), None, payment_id, Retry::Attempts(0), None).unwrap();
+
+	// Don't forward the invreq since we don't support retrieving the static invoice from the
+	// recipient's LSP yet, instead just provide the invoice directly to the payer.
+	let _invreq_om = nodes[0].onion_messenger.next_onion_message_for_peer(nodes[1].node.get_our_node_id()).unwrap();
+
+	let inbound_payment_key = inbound_payment::ExpandedKey::new(
+		&nodes[0].keys_manager.get_inbound_payment_key_material()
+	);
+	let offer_outbound_context_nonce = Nonce::from_entropy_source(nodes[0].keys_manager);
+	let hmac = payment_id.hmac_for_offer_payment(offer_outbound_context_nonce, &inbound_payment_key);
+	if nodes[0].node.handle_message(
+		OffersMessage::StaticInvoice(static_invoice_unknown_req_features),
+		Some(OffersContext::OutboundPayment { payment_id, nonce: offer_outbound_context_nonce, hmac: Some(hmac) }), None
+	).is_some() { panic!() }
+
+	let events = nodes[0].node.get_and_clear_pending_events();
+	assert_eq!(events.len(), 1);
+	match events[0] {
+		Event::PaymentFailed { payment_hash, payment_id: ev_payment_id, reason } => {
+			assert_eq!(payment_hash, None);
+			assert_eq!(payment_id, ev_payment_id);
+			assert_eq!(reason, Some(PaymentFailureReason::UnknownRequiredFeatures));
+		},
+		_ => panic!()
+	}
+}
+
+#[test]
+#[cfg(async_payments)]
+fn ignore_unexpected_static_invoice() {
+	// Test that we'll ignore unexpected static invoices, invoices that don't match our invoice
+	// request, and duplicate invoices.
+	let secp_ctx = Secp256k1::new();
+	let chanmon_cfgs = create_chanmon_cfgs(3);
+	let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
+	let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
+	let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
+	create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 0);
+	create_unannounced_chan_between_nodes_with_value(&nodes, 1, 2, 1_000_000, 0);
+
+	// Initiate payment to the sender's intended offer.
+	let dummy_blinded_path_to_always_online_node = BlindedMessagePath::from_raw(
+		nodes[1].node.get_our_node_id(), test_utils::pubkey(42),
+		vec![BlindedHop { blinded_node_id: test_utils::pubkey(42), encrypted_payload: vec![42; 32] }]
+	);
+	let (offer_builder, offer_nonce) = nodes[2].node.create_async_receive_offer_builder(vec![dummy_blinded_path_to_always_online_node.clone()]).unwrap();
+	let offer = offer_builder.build().unwrap();
+	let amt_msat = 5000;
+	let payment_id = PaymentId([1; 32]);
+	// Set the random bytes so we can predict the offer outbound payment context nonce.
+	*nodes[0].keys_manager.override_random_bytes.lock().unwrap() = Some([42; 32]);
+	nodes[0].node.pay_for_offer(&offer, None, Some(amt_msat), None, payment_id, Retry::Attempts(0), None).unwrap();
+
+	// Don't forward the invreq since we don't support retrieving the static invoice from the
+	// recipient's LSP yet, instead just provide the invoice directly to the payer.
+	let _invreq_om = nodes[0].onion_messenger.next_onion_message_for_peer(nodes[1].node.get_our_node_id()).unwrap();
+
+	// Create a static invoice with the same payment_id but corresponding to a different offer.
+	let unexpected_static_invoice = {
+		let (offer_builder, nonce) = nodes[2].node.create_async_receive_offer_builder(vec![dummy_blinded_path_to_always_online_node]).unwrap();
+		let sender_unintended_offer = offer_builder.build().unwrap();
+
+		nodes[2].node.create_static_invoice_builder_for_async_receive_offer(
+			&sender_unintended_offer, nonce, None
+		).unwrap().build_and_sign(&secp_ctx).unwrap()
+	};
+
+	// Check that we'll ignore the unexpected static invoice.
+	let inbound_payment_key = inbound_payment::ExpandedKey::new(
+		&nodes[0].keys_manager.get_inbound_payment_key_material()
+	);
+	let offer_outbound_context_nonce = Nonce::from_entropy_source(nodes[0].keys_manager);
+	let hmac = payment_id.hmac_for_offer_payment(offer_outbound_context_nonce, &inbound_payment_key);
+	assert!(nodes[0].node.handle_message(
+		OffersMessage::StaticInvoice(unexpected_static_invoice),
+		Some(OffersContext::OutboundPayment { payment_id, nonce: offer_outbound_context_nonce, hmac: Some(hmac) }), None
+	).is_none());
+	let async_pmts_msgs = AsyncPaymentsMessageHandler::release_pending_messages(nodes[0].node);
+	assert!(async_pmts_msgs.is_empty());
+	assert!(nodes[0].node.get_and_clear_pending_events().is_empty());
+
+	// A valid static invoice corresponding to the correct offer will succeed and cause us to send a
+	// held_htlc_available onion message.
+	let valid_static_invoice = nodes[2].node.create_static_invoice_builder_for_async_receive_offer(
+		&offer, offer_nonce, None
+	).unwrap().build_and_sign(&secp_ctx).unwrap();
+
+	assert!(nodes[0].node.handle_message(
+		OffersMessage::StaticInvoice(valid_static_invoice.clone()),
+		Some(OffersContext::OutboundPayment { payment_id, nonce: offer_outbound_context_nonce, hmac: Some(hmac) }), None
+	).is_none());
+	let async_pmts_msgs = AsyncPaymentsMessageHandler::release_pending_messages(nodes[0].node);
+	assert!(!async_pmts_msgs.is_empty());
+	assert!(async_pmts_msgs.into_iter().all(|(msg, _)| matches!(msg, AsyncPaymentsMessage::HeldHtlcAvailable(_))));
+
+	// Receiving a duplicate invoice will have no effect.
+	assert!(nodes[0].node.handle_message(
+		OffersMessage::StaticInvoice(valid_static_invoice),
+		Some(OffersContext::OutboundPayment { payment_id, nonce: offer_outbound_context_nonce, hmac: Some(hmac) }), None
+	).is_none());
+	let async_pmts_msgs = AsyncPaymentsMessageHandler::release_pending_messages(nodes[0].node);
+	assert!(async_pmts_msgs.is_empty());
+}
+
+#[test]
+#[cfg(async_payments)]
+fn pays_static_invoice() {
+	// Test that we support the async payments flow up to and including sending the actual payment.
+	// Async receive is not yet supported so we don't complete the payment yet.
+	let secp_ctx = Secp256k1::new();
+	let chanmon_cfgs = create_chanmon_cfgs(3);
+	let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
+	let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]);
+	let nodes = create_network(3, &node_cfgs, &node_chanmgrs);
+	create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 0);
+	create_unannounced_chan_between_nodes_with_value(&nodes, 1, 2, 1_000_000, 0);
+
+	let dummy_blinded_path_to_always_online_node = BlindedMessagePath::from_raw(
+		nodes[1].node.get_our_node_id(), test_utils::pubkey(42),
+		vec![BlindedHop { blinded_node_id: test_utils::pubkey(42), encrypted_payload: vec![42; 32] }]
+	);
+	let (offer_builder, offer_nonce) = nodes[2].node.create_async_receive_offer_builder(vec![dummy_blinded_path_to_always_online_node.clone()]).unwrap();
+	let offer = offer_builder.build().unwrap();
+	let amt_msat = 5000;
+	let payment_id = PaymentId([1; 32]);
+	// Set the random bytes so we can predict the offer outbound payment context nonce.
+	*nodes[0].keys_manager.override_random_bytes.lock().unwrap() = Some([42; 32]);
+	nodes[0].node.pay_for_offer(&offer, None, Some(amt_msat), None, payment_id, Retry::Attempts(0), None).unwrap();
+
+	// Don't forward the invreq since we don't support retrieving the static invoice from the
+	// recipient's LSP yet, instead just provide the invoice directly to the payer.
+	let _invreq_om = nodes[0].onion_messenger.next_onion_message_for_peer(nodes[1].node.get_our_node_id()).unwrap();
+
+	let inbound_payment_key = inbound_payment::ExpandedKey::new(
+		&nodes[0].keys_manager.get_inbound_payment_key_material()
+	);
+	let offer_outbound_context_nonce = Nonce::from_entropy_source(nodes[0].keys_manager);
+	let hmac = payment_id.hmac_for_offer_payment(offer_outbound_context_nonce, &inbound_payment_key);
+
+	let static_invoice = nodes[2].node.create_static_invoice_builder_for_async_receive_offer(
+		&offer, offer_nonce, None
+	).unwrap().build_and_sign(&secp_ctx).unwrap();
+
+	assert!(nodes[0].node.handle_message(
+			OffersMessage::StaticInvoice(static_invoice),
+			Some(OffersContext::OutboundPayment { payment_id, nonce: offer_outbound_context_nonce, hmac: Some(hmac) }), None
+	).is_none());
+	let async_pmts_msgs = AsyncPaymentsMessageHandler::release_pending_messages(nodes[0].node);
+	assert!(!async_pmts_msgs.is_empty());
+	assert!(async_pmts_msgs.into_iter().all(|(msg, _)| matches!(msg, AsyncPaymentsMessage::HeldHtlcAvailable(_))));
+
+	// Manually create the message and context releasing the HTLC since the recipient doesn't support
+	// responding themselves yet.
+	let outbound_async_payment_context_nonce = Nonce::from_entropy_source(nodes[0].keys_manager);
+	let outbound_async_payment_context = AsyncPaymentsContext::OutboundPayment {
+		payment_id,
+		nonce: outbound_async_payment_context_nonce,
+		hmac: payment_id.hmac_for_async_payment(outbound_async_payment_context_nonce, &inbound_payment_key),
+	};
+	nodes[0].node.handle_release_held_htlc(ReleaseHeldHtlc {}, outbound_async_payment_context.clone());
+
+	// Check that we've queued the HTLCs of the async keysend payment.
+	let htlc_updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
+	assert_eq!(htlc_updates.update_add_htlcs.len(), 1);
+	check_added_monitors!(nodes[0], 1);
+
+	// Receiving a duplicate release_htlc message doesn't result in duplicate payment.
+	nodes[0].node.handle_release_held_htlc(ReleaseHeldHtlc {}, outbound_async_payment_context.clone());
+	assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
+}
+
 fn secret_from_hex(hex: &str) -> SecretKey {
 	SecretKey::from_slice(&<Vec<u8>>::from_hex(hex).unwrap()).unwrap()
 }