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Sending email through AWS lambda with Terraform using smtplib and SendGrid.

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Lambda Email

Lambda that sends email to user, built using Terraform. It receives an array of dictionaries containing email subject, content and the email to receive the message.

Lamba event input:

{
    "data": {
        [
            {
                'subject': 'Hello there from Python!',
                'message': 'This message sent from lambda',
                'to': 'teste@gmail.com'
            },
            {
                'subject': 'Hello there from Python Again!',
                'message': 'This message sent from lambda Again',
                'to': 'unitys@gmail.com'
            }
        ]
    }
}

Details

The repository already contains the required SendGrid 6.4.3 package installed inside the package folder. This repo has both Sendgrid and stmlib implentations! Chose the one that you prefer.

Usage

This modules reads all its variables from Lambda Environment variables, as it can be seen in the file config.py.

For sendGrid credentials, you can create your free account in their website: https://sendgrid.com

Example of lambda call

Lambda asynchronous invocation is preferable:

import json
import boto3
from config import MS_SMS

# MS_SMS = "name_of_function"

messages_array = {
    'data': [{
        'subject': 'HELLO THERE!',
        'message': 'NICE MEETING YOY',
        'to': 'TEST_EMAIL@gmail.com'}]
    }

def send_sms(messages_array):
    """Send sms
    Args:
        phone_number (string): the phone number that will receive the sms
        body_message (string): the message
    """
    client = boto3.client('lambda')
    payload = {
        "data": messages_array
    }
    client.invoke(
        FunctionName=MS_SMS,
        InvocationType='Event',
        Payload=json.dumps(payload),
        LogType='None'
    )

Calling module

# Module 
module "sms" 
    source = "git@github.com:DanielDaCosta/lambda-email.git"

    lambda_name             = var.lambda_sms
    environment             = var.environment
    name                    = var.name
    region                  = var.region
    EMAIL_ADDRESS           = var.EMAIL_ADDRESS
    EMAIL_PASS              = var.EMAIL_PASS
    SENDGRID_API_KEY        = var.SENDGRID_API_KEY
}

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