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https://github.com/danieldacosta/lambda-email

Sending email through AWS lambda with Terraform using smtplib and SendGrid.
https://github.com/danieldacosta/lambda-email

Last synced: 4 months ago
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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:

```python
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

```terraform
# 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
}
```

# References & Acknowledgments
- https://www.youtube.com/watch?v=JRCJ6RtE3xU
- https://stackabuse.com/how-to-send-emails-with-gmail-using-python/
- https://sendgrid.com/docs/for-developers/sending-email/v3-python-code-example/