This is an HTML message
',\n})\n```\n\n3. Using with modern JavaScript frameworks (Next.js, Nuxt, SvelteKit, etc.)\n\nWhen working with frameworks that use Node.js as their development runtime, you'll need to handle the fact that Cloudflare Workers-specific APIs (like `cloudflare:sockets`) aren't available during local development.\n\nThe recommended approach is to use conditional dynamic imports. Here's an example for Nuxt.js:\n\n```typescript\nexport default defineEventHandler(async event => {\n // Check if running in development environment\n if (import.meta.dev) {\n // Development: Use nodemailer (or any Node.js compatible email library)\n const nodemailer = await import('nodemailer')\n const transporter = nodemailer.default.createTransport()\n return await transporter.sendMail()\n } else {\n // Production: Use worker-mailer in Cloudflare Workers environment\n const { WorkerMailer } = await import('worker-mailer')\n const mailer = await WorkerMailer.connect()\n return await mailer.send()\n }\n})\n```\n\nThis pattern ensures your application works seamlessly in both development and production environments.\n\n## API Reference\n\n### WorkerMailer.connect(options)\n\nCreates a new SMTP connection.\n\n```typescript\ntype WorkerMailerOptions = {\n host: string // SMTP server hostname\n port: number // SMTP server port (usually 587 or 465)\n secure?: boolean // Use TLS (default: false)\n startTls?: boolean // Upgrade to TLS if SMTP server supports (default: true)\n credentials?: {\n // SMTP authentication credentials\n username: string\n password: string\n }\n authType?:\n | 'plain'\n | 'login'\n | 'cram-md5'\n | Array<'plain' | 'login' | 'cram-md5'>\n logLevel?: LogLevel // Logging level (default: LogLevel.INFO)\n socketTimeoutMs?: number // Socket timeout in milliseconds\n responseTimeoutMs?: number // Server response timeout in milliseconds\n dsn?: {\n RET?: {\n HEADERS?: boolean\n FULL?: boolean\n }\n NOTIFY?: {\n DELAY?: boolean\n FAILURE?: boolean\n SUCCESS?: boolean\n }\n }\n}\n```\n\n### mailer.send(options)\n\nSends an email.\n\n```typescript\ntype EmailOptions = {\n from:\n | string\n | {\n // Sender's email\n name?: string\n email: string\n }\n to:\n | string\n | string[]\n | {\n // Recipients (TO)\n name?: string\n email: string\n }\n | Array<{ name?: string; email: string }>\n reply?:\n | string\n | {\n // Reply-To address\n name?: string\n email: string\n }\n cc?:\n | string\n | string[]\n | {\n // Carbon Copy recipients\n name?: string\n email: string\n }\n | Array<{ name?: string; email: string }>\n bcc?:\n | string\n | string[]\n | {\n // Blind Carbon Copy recipients\n name?: string\n email: string\n }\n | Array<{ name?: string; email: string }>\n subject: string // Email subject\n text?: string // Plain text content\n html?: string // HTML content\n headers?: Record