How to Send Emails in Bun.js: SMTP & Email API Methods Explained

Bun.js applications can send email through either Nodemailer with an SMTP provider such as Mailtrap or through the Mailtrap Email API and its Node.js SDK. The SMTP approach involves installing Nodemailer, configuring a transporter with server credentials, defining sender, recipients, subject, and message content, and calling `sendMail`, while the API approach authenticates a Mailtrap client with an API token and submits email payloads through its `send` method. Both methods support plain-text and HTML messages, attachments, and multiple recipients with CC and BCC options, although their payload formats differ. Mailtrap requires a verified sending domain and appropriate DNS configuration for production use, and its API can provide additional capabilities such as templates, analytics, webhooks, contact management, and specialized bulk-sending workflows.

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