diff --git a/app/src/renderer/vuex/modules/wallet.js b/app/src/renderer/vuex/modules/wallet.js
index 9f714e4e49..224b229ce6 100644
--- a/app/src/renderer/vuex/modules/wallet.js
+++ b/app/src/renderer/vuex/modules/wallet.js
@@ -12,7 +12,9 @@ export default ({ commit, node }) => {
     sequence: 0,
     key: { address: '' },
     history: [],
-    denoms: []
+    denoms: [],
+    sendQueue: [],
+    sending: false
   }
 
   let mutations = {
@@ -31,6 +33,15 @@ export default ({ commit, node }) => {
     },
     setDenoms (state, denoms) {
       state.denoms = denoms
+    },
+    queueSend (state, sendReq) {
+      state.sendQueue.push(sendReq)
+    },
+    shiftSendQueue (state) {
+      state.sendQueue = state.sendQueue.shift(1)
+    },
+    setSending (state, sending) {
+      state.sending = sending
     }
   }
 
@@ -59,9 +70,31 @@ export default ({ commit, node }) => {
       if (!res) return
       commit('setWalletHistory', res)
     },
-    async walletSend ({ state, dispatch }, args) {
+    async walletSend ({ state, dispatch, commit }, args) {
+      // wait until the current send operation is done
+      if (state.sending) {
+        commit('queueSend', args)
+        return
+      }
+      commit('setSending', true)
+
       let cb = args.cb
       delete args.cb
+
+      // once done, do next send in queue
+      function done (err, res) {
+        commit('setSending', false)
+
+        if (state.sendQueue.length > 0) {
+          // do next send
+          let send = state.sendQueue[0]
+          commit('shiftSendQueue')
+          dispatch('walletSend', send)
+        }
+
+        cb(err, res)
+      }
+
       try {
         if (args.sequence == null) {
           args.sequence = state.sequence + 1
@@ -82,11 +115,18 @@ export default ({ commit, node }) => {
           password: KEY_PASSWORD,
           tx
         })
-        await node.postTx(signedTx)
+        let res = await node.postTx(signedTx)
+        // check response code
+        if (res.check_tx.code !== 0 || res.deliver_tx.code !== 0) {
+          let message = res.check_tx.log || res.deliver_tx.log
+          return done(new Error('Error sending tx: ' + message))
+        }
+
+        commit('setWalletSequence', args.sequence)
       } catch (err) {
-        return cb(err)
+        return done(err)
       }
-      if (cb) cb(null, args)
+      done(null, args)
       dispatch('queryWalletBalances')
     },
     async loadDenoms () {
diff --git a/test/unit/specs/PageSend.spec.js b/test/unit/specs/PageSend.spec.js
index 87399b3ef2..ed1c865f1e 100644
--- a/test/unit/specs/PageSend.spec.js
+++ b/test/unit/specs/PageSend.spec.js
@@ -9,7 +9,10 @@ const wallet = require('renderer/vuex/modules/wallet').default({
       if (args.to.addr.indexOf('fail') !== -1) return Promise.reject('Failed on purpose')
       return Promise.resolve(null)
     },
-    postTx: () => Promise.resolve(null),
+    postTx: () => Promise.resolve({
+      check_tx: { code: 0 },
+      deliver_tx: { code: 0 }
+    }),
     sign: () => Promise.resolve(null),
     queryAccount: () => {}
   }