TechTide is a cloud-native, serverless email marketing solution designed to send personalized, HTML-based tech newsletters to subscribers on a weekly schedule. Built entirely using AWS services, TechTide ensures high availability, cost-efficiency, and automated email delivery — without provisioning or managing servers.
TechTide enables tech bloggers, communities, and organizations to send engaging newsletters without relying on third-party marketing platforms. With simple CSV-based subscriber management and a flexible HTML email template system, it's ideal for developers who want full control over email content, automation, and branding.
TechTide is built using the following AWS services:
- Amazon S3: Stores email templates, assets, and subscriber data (CSV).
- AWS Lambda: Core logic for rendering templates and sending emails.
- Amazon SES (Simple Email Service): Handles email delivery.
- Amazon EventBridge: Triggers Lambda weekly via cron expressions.
- AWS CloudWatch: Logs and monitors Lambda performance.
- CloudFormation (optional): Automates infrastructure setup.
The system follows a clean event-driven architecture that runs autonomously once deployed.
Flow Summary:
- Subscriber data is uploaded to Amazon S3 as a CSV file.
- A weekly scheduled event triggers the Lambda function.
- The Lambda function reads subscriber data and loads the HTML template from S3.
- Emails are rendered with personalized content and sent via Amazon SES.
- Logs and metrics are stored in CloudWatch for monitoring.
Monitoring is enabled through AWS CloudWatch, giving visibility into Lambda invocations, durations, and failures.
- All S3 assets are stored in private buckets with access controlled via IAM roles.
- SES is configured with a verified sender to avoid spoofing or spam.
- Lambda roles are scoped with least-privilege permissions.
- No sensitive data (like real email addresses or credentials) is committed to the repository.
- Sending weekly or monthly newsletters to a subscriber list.
- Sharing tech news, product updates, blog summaries, or event announcements.
- Building your own private newsletter system without third-party tools.
- Integrating with a future web frontend, form submission system, or CMS.
- Completely serverless: No EC2 or container setup required.
- Flexible templates: Easily update HTML/CSS-based templates in S3.
- Automated scheduling: Fully hands-off once deployed.
- Custom branding: Personalize the design to match your identity.
- Extendable design: Easily integrate with DynamoDB, SNS, or a web interface.
TechTide is built to scale. Planned improvements include:
- DynamoDB-based subscriber management
- Unsubscribe functionality with secure token-based links
- Support for multiple templates and campaigns
- Analytics dashboard for tracking open and click rates
- Admin dashboard for uploading subscribers and previewing content
Have suggestions, fixes, or improvements? Contributions are welcome!
- Fork the repository
- Create a new branch
- Commit your changes
- Open a pull request with a clear description
For contribution standards, see contributing.md