Letterstack

What is Letterstack?

Letterstack is a powerful email API designed specifically for developers who want to leverage their own SMTP servers for sending emails. It allows users to connect popular email services like Gmail, Amazon SES, and Zoho, or even their own self-hosted SMTP servers. With Letterstack, you can utilize Handlebars templates for dynamic email content, access a RESTful send API, and maintain comprehensive send logs without incurring additional fees associated with managed email service providers. This makes it an ideal solution for those looking to streamline their email sending processes while retaining control over their SMTP.

How to use Letterstack?

To get started with Letterstack, follow these simple steps:

1. Connect your SMTP: Log in to your Letterstack account and navigate to the SMTP settings. Enter the host, port, and credentials for your chosen SMTP server (e.g., Gmail, Amazon SES, or your VPS). Letterstack will test the connection for you.
2. Create templates: Use the dashboard or API to build your dynamic email templates using Handlebars. You can preview your templates with sample data to ensure they render correctly.
3. Send via API: Make a single POST request to the Letterstack API, including your template ID and any necessary variables. The API will render your template, send the email through your SMTP, and log the results for your review.

What are the main features of Letterstack?

Letterstack offers a range of powerful features to enhance your email sending experience:

• Bring Your Own SMTP: Supports any SMTP server, including Gmail, Amazon SES, Zoho, and self-hosted options.
• Handlebars Templates: Create and manage dynamic email templates with full Handlebars support for variables, conditionals, and loops.
• REST API: Simple API with one POST request to send emails, along with full CRUD capabilities for managing templates.
• Send Logs: Access detailed logs of accepted, failed, and bounced emails, including SMTP error details.
• Project Isolation: Maintain separate SMTP configurations, templates, and API keys for each project, keeping environments cleanly isolated.
• Encrypted Credentials: SMTP passwords are securely encrypted at rest using AES-256, ensuring your credentials are protected.

Who is Letterstack for?

Letterstack is designed for developers and businesses that require a reliable and flexible email sending solution without the overhead of managed email service providers. It is particularly beneficial for those who already have an SMTP server set up, such as Gmail, Amazon SES, or a self-hosted option, and want to enhance their email capabilities with templates, a REST API, and logging features. Ideal for startups, tech-savvy teams, and anyone looking to streamline their email processes while maintaining control over their SMTP.

What are the use cases of Letterstack?

Letterstack can be utilized in various real-world scenarios, including:

1. Transactional Emails: Send order confirmations, password resets, and other automated notifications using dynamic templates.
2. Marketing Campaigns: Utilize Handlebars templates to create personalized marketing emails that engage your audience.
3. Testing and Development: Developers can use Letterstack for testing email functionalities in their applications without incurring costs associated with email delivery.