diff --git a/src/logic/notifications/notificationTypes.js b/src/logic/notifications/notificationTypes.js
new file mode 100644
index 00000000..8a529bad
--- /dev/null
+++ b/src/logic/notifications/notificationTypes.js
@@ -0,0 +1,213 @@
+// @flow
+export const SUCCESS = 'success'
+export const ERROR = 'error'
+export const WARNING = 'warning'
+export const INFO = 'info'
+
+const shortDuration = 5000
+const longDuration = 10000
+
+export type Variant = SUCCESS | ERROR | WARNING | INFO
+
+export type Notification = {
+  description: string,
+  variant: Variant,
+  persist: boolean,
+  autoHideDuration?: shortDuration | longDuration,
+}
+
+export type Notifications = {
+  // Wallet Connection
+  CONNECT_WALLET_MSG: string,
+  CONNECT_WALLET_READ_MODE_MSG: string,
+  WALLET_CONNECTED_MSG: string,
+  UNLOCK_WALLET_MSG: string,
+  CONNECT_WALLET_ERROR_MSG: string,
+
+  // Regular/Custom Transactions
+  SIGN_TX_MSG: Notification,
+  TX_PENDING_MSG: Notification,
+  TX_PENDING_MORE_CONFIRMATIONS_MSG: Notification,
+  TX_REJECTED_MSG: Notification,
+  TX_EXECUTED_MSG: Notification,
+  TX_FAILED_MSG: Notification,
+
+  // Approval Transactions
+  TX_CONFIRMATION_PENDING_MSG: string,
+  TX_CONFIRMATION_EXECUTED_MSG: string,
+  TX_CONFIRMATION_FAILED_MSG: string,
+
+  // Safe Name
+  SAFE_NAME_CHANGED_MSG: string,
+
+  // Owner Name
+  OWNER_NAME_CHANGE_EXECUTED_MSG: string,
+
+  // Owners
+  SIGN_OWNER_CHANGE_MSG: string,
+  ONWER_CHANGE_PENDING_MSG: string,
+  ONWER_CHANGE_PENDING_MORE_CONFIRMATIONS_MSG: string,
+  ONWER_CHANGE_REJECTED_MSG: string,
+  ONWER_CHANGE_EXECUTED_MSG: string,
+  ONWER_CHANGE_FAILED_MSG: string,
+
+  // Threshold
+  SIGN_THRESHOLD_CHANGE_MSG: string,
+  THRESHOLD_CHANGE_PENDING_MSG: string,
+  THRESHOLD_CHANGE_PENDING_MORE_CONFIRMATIONS_MSG: string,
+  THRESHOLD_CHANGE_REJECTED_MSG: string,
+  THRESHOLD_CHANGE_EXECUTED_MSG: string,
+  THRESHOLD_CHANGE_FAILED_MSG: string,
+
+  // Rinkeby version
+  RINKEBY_VERSION_MSG: string,
+  WRONG_NETWORK_RINKEBY_MSG: string,
+  WRONG_NETWOEK_MAINNET_MSG: string,
+}
+
+export const NOTIFICATIONS: Notifications = {
+  // Wallet Connection
+  CONNECT_WALLET_MSG: {
+    description: 'Please connect wallet to continue',
+    options: { variant: WARNING, persist: true },
+  },
+  CONNECT_WALLET_READ_MODE_MSG: {
+    description: 'You are in read-only mode: Please connect wallet',
+    options: { variant: WARNING, persist: true },
+  },
+  WALLET_CONNECTED_MSG: {
+    description: 'Wallet connected',
+    options: {
+      variant: SUCCESS,
+      persist: false,
+      autoHideDuration: shortDuration,
+      preventDuplicate: true,
+    },
+  },
+  UNLOCK_WALLET_MSG: {
+    description: 'Unlock your wallet to connect',
+    options: { variant: WARNING, persist: true },
+  },
+  CONNECT_WALLET_ERROR_MSG: {
+    description: 'Error connecting to your wallet',
+    options: { variant: ERROR, persist: true },
+  },
+
+  // Regular/Custom Transactions
+  SIGN_TX_MSG: {
+    description: 'Please sign the transaction',
+    options: { variant: SUCCESS, persist: true },
+  },
+  TX_PENDING_MSG: {
+    description: 'Transaction pending',
+    options: { variant: SUCCESS, persist: true },
+  },
+  TX_PENDING_MORE_CONFIRMATIONS_MSG: {
+    description: 'Transaction pending: More confirmations required to execute',
+    options: { variant: SUCCESS, persist: true },
+  },
+  TX_REJECTED_MSG: {
+    description: 'Transaction rejected',
+    options: { variant: ERROR, persist: false, autoHideDuration: longDuration },
+  },
+  TX_EXECUTED_MSG: {
+    description: 'Transaction successfully executed',
+    options: { variant: SUCCESS, persist: false, autoHideDuration: longDuration },
+  },
+  TX_FAILED_MSG: {
+    description: 'Transaction failed',
+    options: { variant: ERROR, persist: false, autoHideDuration: longDuration },
+  },
+
+  // Approval Transactions
+  TX_CONFIRMATION_PENDING_MSG: {
+    description: 'Confirmation transaction pending',
+    options: { variant: SUCCESS, persist: true },
+  },
+  TX_CONFIRMATION_EXECUTED_MSG: {
+    description: 'Confirmation transaction succesful',
+    options: { variant: SUCCESS, persist: false, autoHideDuration: longDuration },
+  },
+  TX_CONFIRMATION_FAILED_MSG: {
+    description: 'Confirmation transaction failed',
+    options: { variant: ERROR, persist: false, autoHideDuration: longDuration },
+  },
+
+  // Safe Name
+  SAFE_NAME_CHANGE_EXECUTED_MSG: {
+    description: 'Safe name changed',
+    options: { variant: SUCCESS, persist: false, autoHideDuration: shortDuration },
+  },
+
+  // Owner Name
+  OWNER_NAME_CHANGE_EXECUTED_MSG: {
+    description: 'Owner name changed',
+    options: { variant: SUCCESS, persist: false, autoHideDuration: shortDuration },
+  },
+
+  // Owners
+  SIGN_OWNER_CHANGE_MSG: {
+    description: 'Please sign the owner change',
+    options: { variant: SUCCESS, persist: true },
+  },
+  ONWER_CHANGE_PENDING_MSG: {
+    description: 'Owner change pending',
+    options: { variant: SUCCESS, persist: true },
+  },
+  ONWER_CHANGE_PENDING_MORE_CONFIRMATIONS_MSG: {
+    description: 'Owner change pending: More confirmations required to execute',
+    options: { variant: SUCCESS, persist: true },
+  },
+  ONWER_CHANGE_REJECTED_MSG: {
+    description: 'Owner change rejected',
+    options: { variant: ERROR, persist: false, autoHideDuration: longDuration },
+  },
+  OWNER_CHANGE_EXECUTED_MSG: {
+    description: 'Owner change successfully executed',
+    options: { variant: SUCCESS, persist: false, autoHideDuration: longDuration },
+  },
+  ONWER_CHANGE_FAILED_MSG: {
+    description: 'Owner change failed',
+    options: { variant: ERROR, persist: false, autoHideDuration: longDuration },
+  },
+
+  // Threshold
+  SIGN_THRESHOLD_CHANGE_MSG: {
+    description: 'Please sign the required confirmations change',
+    options: { variant: SUCCESS, persist: true },
+  },
+  THRESHOLD_CHANGE_PENDING_MSG: {
+    description: 'Required confirmations change pending',
+    options: { variant: SUCCESS, persist: true },
+  },
+  THRESHOLD_CHANGE_PENDING_MORE_CONFIRMATIONS_MSG: {
+    description: 'Required confirmations change pending: More confirmations required to execute',
+    options: { variant: SUCCESS, persist: true },
+  },
+  THRESHOLD_CHANGE_REJECTED_MSG: {
+    description: 'Required confirmations change rejected',
+    options: { variant: ERROR, persist: false, autoHideDuration: longDuration },
+  },
+  THRESHOLD_CHANGE_EXECUTED_MSG: {
+    description: 'Required confirmations change successfully executed',
+    options: { variant: SUCCESS, persist: false, autoHideDuration: longDuration },
+  },
+  THRESHOLD_CHANGE_FAILED_MSG: {
+    description: 'Required confirmations change failed',
+    options: { variant: ERROR, persist: false, autoHideDuration: longDuration },
+  },
+
+  // Network
+  RINKEBY_VERSION_MSG: {
+    description: "Rinkeby Version: Don't send mainnet assets to this Safe",
+    options: { variant: INFO, persist: true, hideIconVariant: true },
+  },
+  WRONG_NETWORK_RINKEBY_MSG: {
+    description: 'Wrong network: Please use Rinkeby',
+    options: { variant: WARNING, persist: true },
+  },
+  WRONG_NETWOEK_MAINNET_MSG: {
+    description: 'Wrong network: Please use Mainnet',
+    options: { variant: WARNING, persist: true },
+  },
+}