Keplars Rust Examples

Rust examples for integrating Keplars email service.

SDK Install

[dependencies]
keplars = "2.0.4"

use keplars::{Keplars, models::{SendEmailRequest, ToRecipient}};

let client = Keplars::new("kms_your_api_key")?;

let resp = client.emails().send_instant(SendEmailRequest {
    to: ToRecipient::Email("user@example.com".to_string()),
    from: "hello@yourdomain.com".to_string(),
    subject: "Hello!".to_string(),
    body: Some("<h1>Hello World</h1>".to_string()),
    is_html: Some(true),
    ..Default::default()
}).await?;

Examples

SDK Example (sdk-example/) - Recommended

Full Axum HTTP server demo using the official Rust SDK. Covers transactional emails, bulk/scheduled marketing emails, webhook signature verification, and priority queue usage.

View SDK Example ->

API Example (api-example/)

Minimal script sending a single email via raw HTTP using reqwest - no SDK required.

View API Example ->

SMTP Example (smtp-example/)

Minimal script sending a single email via SMTP using lettre - no SDK required.

View SMTP Example ->

Quick Start

cd sdk-example
cp .env.example .env
cargo run

Server starts on http://localhost:8080.

Prerequisites

• Rust 1.75+
• A Keplars API key (get one here)

Related Examples

• Go Examples - Gin
• Python Examples - FastAPI
• Node.js Examples - Express
• Ruby Examples - Sinatra
• Dart Examples - Shelf

License

MIT