How to Send Emails with Email API: Practical Examples in Popular Languages and Frameworks

The article explains how to send transactional and bulk emails through Mailtrap’s REST-based Email API, while noting that its general principles apply to other email API providers and contrasting API-based sending with SMTP at a high level. It describes the required setup process, including creating an account, verifying a sending domain through SPF, DKIM, and DMARC DNS records, obtaining domain-specific API tokens, and building authenticated HTTP requests. Examples use official Mailtrap SDKs for PHP, Laravel, Python, and Node.js to send plain-text and HTML messages, with features such as multiple recipients, CC and BCC fields, attachments, embedded images, custom headers, variables, categories, Blade templates, and error handling. The article also advises evaluating providers by infrastructure, scalability, delivery performance, integrations, templates, personalization, webhooks, SDK availability, and customer support, using Mailtrap and Mailgun as a brief comparison example.

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