How to Send 1000 Personalized Emails with 50 Lines of Python

How to Send 1000 Personalized Emails with 50 Lines of Python You have a list of 1,000 contacts and a message to send. You open Mailchimp, stare at the pricing page, and realize that for your use case — a one-off outreach campaign, a product launch, or a customer notification — you'd be paying $20–$100/month for a tool you'll use twice. There's a better way. Python's built-in smtplib library can send personalized emails to your entire list with no monthly fees, no subscriber limits, and complete control over every message. Here's how to do it in under 50 lines of code. Why Skip Mailchimp (for This Use Case) Mailchimp is a great product — but it's designed for marketing teams managing ongoing campaigns with templates, A/B tests, and analytics dashboards. If you're a developer or technical founder who needs to: Send a one-time batch of personalized emails Trigger emails programmatically from your app Keep costs at zero for small/medium sends Own your sending logic without vendor lock-in .