Send Automated Emails using Rasa chatbot

31 Aug, 2021
Rasa is a python module used to create custom AI chatbots. You can easily send automated emails to your users using the rasa chatbot. Rasa is a tool to build custom AI chatbots using Python and natural language understanding (NLU). Rasa provides a framework for developing AI chatbots that uses natural language understanding (NLU). It also allows the user to train the model and add custom actions.
In this article, we are going to see how to send emails using Rasa.
First, you will need a rasa chatbot through which you can send automated emails. 
To install the rasa module type the below command in the terminal (requires Python 3.6, 3.7, or 3.8).
pip3 install -U pip
pip3 install rasa
To create a new project with example training data type the below command in the terminal.
rasa init
Now your rasa chatbot is ready. You can talk to your chatbot using the below command.
rasa shell
Now, In the next step, we will add some more training data to this chatbot.
Now our chatbot can respond to basic user inputs, but we have to add more intents, responses, and stories to take email ID and Name from the user. For an in-depth explanation of intents, responses and stories refer to this article.
Here we need two new intents for name and email id. Add the below lines in your nlu.yml file.
- intent: email_id
  examples: |
    - [abc@gmail.com](email)
    - [abc@yourdomain](email)
    - @gmail.com
    - [xyz@gmail.com](email)
- intent: user_name
  examples: |
    - [YOURNAME](name)
    - [RANDOM_PERSON_NAME](name)
Here we are also creating two slots ( email and name) in which we will store the user data so in your domain.yml file add the new slots and intents.
Now we have to add two new responses to our chatbot.
To ask the user to enter name.
To ask the user to enter an email id.
For this add the below lines in the responses section in the domain.yml file.
utter_askname:
- text: Please enter your name.

utter_askemail:
- text: Please enter email id to receive updates.
Now we have to add some relevant stories in our stories.yml file so remove all the stories in that file and add the below lines ( you can add more stories according to your need).
- story: GeekforGeek story 
  steps:
  - intent: greet
  - action: utter_askname
  - intent: user_name
  - slot_was_set:
    - name: "YOURNAME"
  - action: utter_askemail
  - slot_was_set:
    - email: 'abc@gmail.com'
  - intent: email_id
  - action: action_email
Here ‘action_email’ doesn’t exist so we have to create this action to send emails but before that go to the endpoints.yml file and uncomment the lines below.
action_endpoint:
  url: "http://localhost:5055/webhook"
Now we will add a new class in our actions.py file to send automated emails. Add the below codes in the actions.py file.
Python3
# Importing required modulesfrom typing import Any, Text, Dict, Listfrom rasa_sdk import Action, Trackerfrom rasa_sdk.executor import CollectingDispatcherimport smtplib  # Creating new class to send emails.class ActionEmail(Action):      def name(self) -> Text:                  # Name of the action        return "action_email"      def run(self, dispatcher: CollectingDispatcher,            tracker: Tracker,            domain: Dict[Text, Any]) -> List[Dict[Text, Any]]:          # Getting the data stored in the        # slots and storing them in variables.        user_name = tracker.get_slot("name")        email_id = tracker.get_slot("email")                  # Code to send email        # Creating connection using smtplib module        s = smtplib.SMTP('smtp.gmail.com',587)                  # Making connection secured        s.starttls()                   # Authentication        s.login("SENDER_EMAILID", "PASSWORD")                  # Message to be sent        message = "Hello {} , This is a demo message".format(user_name)                  # Sending the mail        s.sendmail("SENDER_EMAIL_ID",email_id, message)                  # Closing the connection        s.quit()                  # Confirmation message        dispatcher.utter_message(text="Email has been sent.")        return []
Explanation: First import rasa and smtplib module. Then creating a python class that will return an action named ‘action_email’ and get the username and email id from the slot and storing them in separate variables. Creating connection using SMTP method of smtplib module. And then Make the connection secured using the starttls() method of the smtplib module. And then Logging in to the Gmail account using the login() function that will take email id and password as parameters. Storing the message in a new variable named ‘message’. And then send the Email using the Sendmail function that will take the sender’s email id, receiver’s email id, and message as its parameter. Then close the connection using the quit() function.
Log in to your Gmail account, and go to “Manage your Google Account”.
Then click on the “Security” tab.
Then turn on the “Less secure App access”:
After this add the below lines in the domain.yml file:
actions:
- action_email
Now everything is ready we just have to train our chatbot. For this type the below command is in the terminal:
rasa train
After training is complete you can talk to your chatbot by typing the below commands in the terminal. To run action server:
rasa run actions
To run the trained model:
rasa shell
Output:
Video Output:
Machine Learning
Python
Machine Learning
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