diff --git a/environments/gen.toml b/environments/gen.toml
index 561ef10..a988991 100644
--- a/environments/gen.toml
+++ b/environments/gen.toml
@@ -10,8 +10,8 @@
     gasFeeCap = "1000000007" # gasFeeCap to use for the deployment txs - env: $ETH_DEPLOYMENT_GAS_FEE_CAP
 
 [contractSpammer]
-    frequency = 10 # how often to send a transaction (in milliseconds) - env: $ETH_CALL_FREQ
-    totalNumber = 5000 # total number of transactions to send (per sender) - env: $ETH_CALL_TOTAL_NUMBER
+    frequency = 0 # how often to send a transaction (in milliseconds) - env: $ETH_CALL_FREQ
+    totalNumber = 500000 # total number of transactions to send (per sender) - env: $ETH_CALL_TOTAL_NUMBER
     abiPath = "sol/build/Test.abi" # path to the abi file for the contract we are calling - env: $ETH_CALL_ABI_PATH
     # NOTE: we expect to be calling a method such as Put(address addr, uint256 val) where the first argument is an
     # integer than we can increment to store values at new locations in the contract trie (to grow it) and
@@ -22,8 +22,8 @@
     gasFeeCap = "1000000007" # gasFeeCap to use for the eth call txs - env: $ETH_CALL_GAS_FEE_CAP
 
 [sendSpammer]
-    frequency = 50 # how often to send a transaction (in milliseconds) - env: $ETH_SEND_FREQ
-    totalNumber = 1000 # total number of transactions to send (per sender) - env: $ETH_SEND_TOTAL_NUMBER
+    frequency = 0 # how often to send a transaction (in milliseconds) - env: $ETH_SEND_FREQ
+    totalNumber = 100000 # total number of transactions to send (per sender) - env: $ETH_SEND_TOTAL_NUMBER
     amount = "10000" # amount of wei (1x10^-18 ETH) to send in each tx (be mindful of the genesis allocations) - env: $ETH_SEND_AMOUNT
     gasLimit = 21000 # gasLimit to use for the eth transfer txs - env: $ETH_SEND_GAS_LIMIT
     gasTipCap = "1000000000" # gasTipCap to use for the eth transfer txs - env: $ETH_SEND_GAS_TIP_CAP
diff --git a/pkg/auto/config.go b/pkg/auto/config.go
index a463d4e..ca50fac 100644
--- a/pkg/auto/config.go
+++ b/pkg/auto/config.go
@@ -68,9 +68,6 @@ type Config struct {
 
 	// Configuration for the eth transfer txs
 	SendConfig *SendConfig
-
-	// Configuration for EIP1559
-	EIP1559Config *EIP1559Config
 }
 
 // DeploymentConfig holds the parameters for the contract deployment contracts
@@ -108,13 +105,10 @@ type SendConfig struct {
 	GasTipCap *big.Int
 	Amount    *big.Int
 
-	DestinationAddresses []common.Address
-	Frequency            time.Duration
+	Frequency   time.Duration
+	TotalNumber int
 }
 
-// todo: EIP1559Config
-type EIP1559Config struct{}
-
 func NewConfig() (*Config, error) {
 	// Initialize rpc client
 	httpPathStr := viper.GetString(ethHttpPath)
@@ -232,6 +226,15 @@ func NewCallConfig(chainID *big.Int) (*CallConfig, error) {
 	if !exist {
 		return nil, fmt.Errorf("method '%s' not found in provided abi", methodName)
 	}
+
+	var frequency time.Duration
+	tmpFreq := viper.GetInt(ethCallFrequency)
+	if tmpFreq <= 0 {
+		frequency = time.Microsecond
+	} else {
+		frequency = viper.GetDuration(ethCallFrequency) * time.Millisecond
+	}
+
 	return &CallConfig{
 		ChainID:     chainID,
 		GasLimit:    viper.GetUint64(ethCallGasLimit),
@@ -239,7 +242,7 @@ func NewCallConfig(chainID *big.Int) (*CallConfig, error) {
 		GasTipCap:   big.NewInt(viper.GetInt64(ethCallGasTipCap)),
 		MethodName:  methodName,
 		ABI:         parsedABI,
-		Frequency:   viper.GetDuration(ethCallFrequency) * time.Millisecond,
+		Frequency:   frequency,
 		TotalNumber: viper.GetInt(ethCallTotalNumber),
 	}, nil
 }
@@ -251,18 +254,22 @@ func NewSendConfig(chainID *big.Int) (*SendConfig, error) {
 	if !ok {
 		return nil, fmt.Errorf("unable to convert amount string (%s) into big.Int", amountStr)
 	}
-	number := viper.GetUint64(ethSendTotalNumber)
-	addrs := make([]common.Address, number)
-	for i := uint64(0); i < number; i++ {
-		addrs[i] = crypto.CreateAddress(receiverAddressSeed, i)
+
+	var frequency time.Duration
+	tmpFreq := viper.GetInt(ethCallFrequency)
+	if tmpFreq <= 0 {
+		frequency = time.Microsecond
+	} else {
+		frequency = viper.GetDuration(ethCallFrequency) * time.Millisecond
 	}
+
 	return &SendConfig{
-		ChainID:              chainID,
-		DestinationAddresses: addrs,
-		Frequency:            viper.GetDuration(ethSendFrequency) * time.Millisecond,
-		Amount:               amount,
-		GasLimit:             viper.GetUint64(ethSendGasLimit),
-		GasFeeCap:            big.NewInt(viper.GetInt64(ethSendGasFeeCap)),
-		GasTipCap:            big.NewInt(viper.GetInt64(ethSendGasTipCap)),
+		ChainID:     chainID,
+		Frequency:   frequency,
+		Amount:      amount,
+		GasLimit:    viper.GetUint64(ethSendGasLimit),
+		GasFeeCap:   big.NewInt(viper.GetInt64(ethSendGasFeeCap)),
+		GasTipCap:   big.NewInt(viper.GetInt64(ethSendGasTipCap)),
+		TotalNumber: viper.GetInt(ethSendTotalNumber),
 	}, nil
 }
diff --git a/pkg/auto/sender.go b/pkg/auto/sender.go
index b3718d5..ccca587 100644
--- a/pkg/auto/sender.go
+++ b/pkg/auto/sender.go
@@ -36,7 +36,7 @@ func NewEthSender(config *Config) *EthSender {
 }
 
 // Send awaits txs off the provided work queue and sends them
-func (s *EthSender) Send(quitChan <-chan bool, txChan <-chan *types.Transaction) (<-chan bool, <-chan error) {
+func (s *EthSender) Send(quitChan <-chan bool, txChan <-chan *types.Transaction, sentCh chan *types.Transaction) (<-chan bool, <-chan error) {
 	// err channel returned to calling context
 	errChan := make(chan error)
 	doneChan := make(chan bool)
@@ -49,6 +49,8 @@ func (s *EthSender) Send(quitChan <-chan bool, txChan <-chan *types.Transaction)
 				counter += 1
 				if err := shared.SendTransaction(s.client, tx); err != nil {
 					errChan <- err
+				} else {
+					sentCh <- tx
 				}
 			case <-quitChan:
 				logrus.Infof("quitting Send loop (sent %d)", counter)
diff --git a/pkg/auto/service.go b/pkg/auto/service.go
index 5395eef..f277d9b 100644
--- a/pkg/auto/service.go
+++ b/pkg/auto/service.go
@@ -50,10 +50,12 @@ func (s *Spammer) Loop(quitChan <-chan bool) (<-chan bool, error) {
 	genQuit := make(chan bool)
 	senderQuit := make(chan bool)
 	doneChan := make(chan bool)
+	watcher := NewTxWatcher(s.config.EthClient)
+	watcher.Start()
 
 	s.config.CallConfig.ContractAddrs = contractAddrs
 	genDoneChan, txChan, genErrChan := s.TxGenerator.GenerateTxs(genQuit)
-	sendDoneChan, sendErrChan := s.Sender.Send(senderQuit, txChan)
+	sendDoneChan, sendErrChan := s.Sender.Send(senderQuit, txChan, watcher.PendingTxCh)
 
 	go func() {
 		defer close(doneChan)
@@ -64,17 +66,24 @@ func (s *Spammer) Loop(quitChan <-chan bool) (<-chan bool, error) {
 				recoverClose(genQuit)
 				<-genDoneChan
 				recoverClose(senderQuit)
+				<-sendDoneChan
+				recoverClose(watcher.quitCh)
 			case err := <-sendErrChan:
 				logrus.Errorf("tx sending error: %v", err)
 				recoverClose(genQuit)
 				<-genDoneChan
 				recoverClose(senderQuit)
+				<-sendDoneChan
+				recoverClose(watcher.quitCh)
 			case <-quitChan:
 				logrus.Info("shutting down tx spammer")
 				recoverClose(genQuit)
 				<-genDoneChan
 				recoverClose(senderQuit)
+				<-sendDoneChan
+				recoverClose(watcher.quitCh)
 			case <-sendDoneChan:
+				recoverClose(watcher.quitCh)
 				return
 			case <-genDoneChan:
 				recoverClose(senderQuit)
@@ -84,15 +93,6 @@ func (s *Spammer) Loop(quitChan <-chan bool) (<-chan bool, error) {
 	return doneChan, nil
 }
 
-func recoverSend(ch chan bool, value bool) {
-	defer func() {
-		if recover() != nil {
-		}
-	}()
-
-	ch <- value
-}
-
 func recoverClose(ch chan bool) (justClosed bool) {
 	defer func() {
 		if recover() != nil {
diff --git a/pkg/auto/tx_generator.go b/pkg/auto/tx_generator.go
index 6dd6c23..03eb46e 100644
--- a/pkg/auto/tx_generator.go
+++ b/pkg/auto/tx_generator.go
@@ -19,6 +19,7 @@ package auto
 import (
 	"context"
 	"crypto/ecdsa"
+	"github.com/ethereum/go-ethereum/crypto"
 	log "github.com/sirupsen/logrus"
 	"math/big"
 	"math/rand"
@@ -79,7 +80,7 @@ func (gen *TxGenerator) GenerateTxs(quitChan <-chan bool) (<-chan bool, <-chan *
 	errChan := make(chan error)
 	wg := new(sync.WaitGroup)
 	for i, sender := range gen.config.SenderKeys {
-		if len(gen.config.SendConfig.DestinationAddresses) > 0 {
+		if gen.config.SendConfig.TotalNumber > 0 {
 			wg.Add(1)
 			go gen.genSends(wg, txChan, errChan, quitChan, sender, gen.config.SenderAddrs[i], gen.config.SendConfig)
 		}
@@ -99,9 +100,10 @@ func (gen *TxGenerator) GenerateTxs(quitChan <-chan bool) (<-chan bool, <-chan *
 func (gen *TxGenerator) genSends(wg *sync.WaitGroup, txChan chan<- *types.Transaction, errChan chan<- error, quitChan <-chan bool, senderKey *ecdsa.PrivateKey, senderAddr common.Address, sendConfig *SendConfig) {
 	defer wg.Done()
 	ticker := time.NewTicker(sendConfig.Frequency)
-	for _, dst := range sendConfig.DestinationAddresses {
+	for i := 0; i < sendConfig.TotalNumber; i++ {
 		select {
 		case <-ticker.C:
+			dst := crypto.CreateAddress(receiverAddressSeed, uint64(i))
 			log.Debugf("Generating send from %s to %s.", senderAddr.Hex(), dst.Hex())
 			rawTx, _, err := gen.GenerateTx(&GenParams{
 				ChainID:   sendConfig.ChainID,
diff --git a/pkg/auto/tx_watcher.go b/pkg/auto/tx_watcher.go
new file mode 100644
index 0000000..0558fa0
--- /dev/null
+++ b/pkg/auto/tx_watcher.go
@@ -0,0 +1,60 @@
+package auto
+
+import (
+	"context"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/ethclient"
+	"github.com/sirupsen/logrus"
+	"time"
+)
+
+type TxWatcher struct {
+	PendingTxCh chan *types.Transaction
+	ethClient   *ethclient.Client
+	quitCh      chan bool
+	startedAt   time.Time
+	counter     uint
+}
+
+func NewTxWatcher(ethClient *ethclient.Client) *TxWatcher {
+	return &TxWatcher{
+		PendingTxCh: make(chan *types.Transaction, 1000),
+		ethClient:   ethClient,
+		quitCh:      make(chan bool),
+	}
+}
+
+func (tw *TxWatcher) Start() {
+	tw.startedAt = time.Now()
+	go func() {
+		defer close(tw.PendingTxCh)
+		for {
+			select {
+			case tx := <-tw.PendingTxCh:
+				tw.counter += 1
+				if 0 == tw.counter%10 {
+					logrus.Debugf("TxW: checking on TX %s (%d in channel)", tx.Hash().Hex(), len(tw.PendingTxCh))
+					var receipt *types.Receipt = nil
+					sleep := time.Millisecond
+					start := time.Now()
+					for receipt == nil {
+						receipt, _ = tw.ethClient.TransactionReceipt(context.Background(), tx.Hash())
+						if nil == receipt {
+							time.Sleep(sleep)
+							sleep *= 2
+						} else {
+							elapsed := time.Now().Sub(tw.startedAt)
+							logrus.Debugf("TxW: TX %s found in block %s after %dms.", tx.Hash().Hex(),
+								receipt.BlockNumber.String(), time.Now().Sub(start).Milliseconds())
+							logrus.Infof("TxW: %d in %.0f seconds (%.2f/sec, %d pending)",
+								tw.counter, elapsed.Seconds(), float64(tw.counter)/elapsed.Seconds(), len(tw.PendingTxCh))
+						}
+					}
+				}
+			case <-tw.quitCh:
+				logrus.Infof("TxW: quitting with %d in channel", len(tw.PendingTxCh))
+				return
+			}
+		}
+	}()
+}
diff --git a/pkg/shared/util.go b/pkg/shared/util.go
index adaba02..6f69e07 100644
--- a/pkg/shared/util.go
+++ b/pkg/shared/util.go
@@ -39,13 +39,13 @@ func TxSigner(chainID *big.Int) types.Signer {
 func SendTransaction(rpcClient *rpc.Client, tx *types.Transaction) error {
 	msg, _ := tx.AsMessage(TxSigner(tx.ChainId()), big.NewInt(1))
 	if nil == tx.To() {
-		logrus.Infof("TX %s to create contract %s (sender %s)",
+		logrus.Debugf("TX %s to create contract %s (sender %s)",
 			tx.Hash().Hex(), crypto.CreateAddress(msg.From(), tx.Nonce()), msg.From().Hex())
 	} else if nil == tx.Data() || len(tx.Data()) == 0 {
-		logrus.Infof("TX %s sending %s Wei to %s (sender %s)",
+		logrus.Debugf("TX %s sending %s Wei to %s (sender %s)",
 			tx.Hash().Hex(), tx.Value().String(), msg.To().Hex(), msg.From().Hex())
 	} else {
-		logrus.Infof("TX %s calling contract %s (sender %s)",
+		logrus.Debugf("TX %s calling contract %s (sender %s)",
 			tx.Hash().Hex(), msg.To().Hex(), msg.From().Hex())
 	}