Birthday SMS Sender Script

Here’s a Birthday SMS Sender Script in Python that reads contact details (name, phone number, and birthday) from a CSV file and sends SMS via Twilio API. The script checks if today matches any contact’s birthday and sends a personalized message.

python
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import csv
from datetime import datetime
from twilio.rest import Client

# Twilio credentials (replace with your actual credentials)
TWILIO_ACCOUNT_SID = 'your_account_sid'
TWILIO_AUTH_TOKEN = 'your_auth_token'
TWILIO_PHONE_NUMBER = '+1234567890'

# Path to the CSV file containing contact details
CONTACTS_CSV = 'contacts.csv'

# Initialize Twilio client
client = Client(TWILIO_ACCOUNT_SID, TWILIO_AUTH_TOKEN)

def read_contacts(file_path):
    contacts = []
    with open(file_path, mode='r', newline='', encoding='utf-8') as file:
        reader = csv.DictReader(file)
        for row in reader:
            contacts.append({
                'name': row['Name'],
                'phone': row['Phone'],
                'birthday': row['Birthday']  # Format: YYYY-MM-DD
            })
    return contacts

def send_birthday_sms(name, phone):
    message = f"Happy Birthday, {name}! 🎉 Wishing you a day filled with happiness and a year filled with joy."
    try:
        client.messages.create(
            body=message,
            from_=TWILIO_PHONE_NUMBER,
            to=phone
        )
        print(f"Sent to {name} at {phone}")
    except Exception as e:
        print(f"Failed to send to {name}: {e}")

def check_and_send_birthday_wishes():
    today = datetime.now().strftime('%m-%d')
    contacts = read_contacts(CONTACTS_CSV)
    for contact in contacts:
        try:
            contact_birthday = datetime.strptime(contact['birthday'], '%Y-%m-%d').strftime('%m-%d')
            if contact_birthday == today:
                send_birthday_sms(contact['name'], contact['phone'])
        except ValueError:
            print(f"Invalid date format for {contact['name']}")

if __name__ == '__main__':
    check_and_send_birthday_wishes()

CSV Format (contacts.csv)

csv
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Name,Phone,Birthday
John Doe,+12345678901,1990-05-18
Jane Smith,+12345678902,1985-07-24

Notes

• Ensure the Twilio number has permissions to send SMS to the target country.

• Schedule this script daily using cron (Linux/macOS) or Task Scheduler (Windows).

• Handle rate limits or message quotas in production by batching or using retry logic.

Let me know if you want a version using a different SMS API or database backend.