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'\n});\n```\n\nSending Emails with additional parameters\n\n```javascript\nimport { SendLayer } from 'sendlayer';\n\n// Initialize the client\nconst sendlayer = new SendLayer('your-sendlayer-api-key');\n\nconst params = {\n from: {email: 'sender@example.com', name: 'Test Sender'},\n to: [\n { email: 'recipient1@example.com', name: 'Recipient 1' },\n { email: 'recipient2@example.com', name: 'Recipient 2' }\n ], \n subject: 'Test Email',\n html: 'This is a test email
', // or text for plain text emails\n text: 'This is a test email', // optional, for plain text version\n cc: [{ email: 'cc@example.com', name: 'CC Recipient' }], // optional\n bcc: [{ email: 'bcc@example.com', name: 'BCC Recipient' }], // optional\n replyTo: [{ email: 'reply@example.com', name: 'Reply To' }], // optional\n tags: ['tag1', 'tag2'], // optional\n headers: { 'X-Custom-Header': 'value' }, // optional\n attachments: [{ // optional\n path: 'path/to/file.pdf',\n type: 'application/pdf',\n }]\n}\n\n// Send an email with additional parameters\nconst response = await sendlayer.Emails.send(params);\n\nconsole.log('Email Sent successfully! MessageID:', response.MessageID)\n```\n\n### Events\n\n```javascript\nimport { SendLayer } from 'sendlayer';\n\n// Initialize the client\nconst sendlayer = new SendLayer('your-api-key');\n\n\n// Get all events\nconst allEvents = await sendlayer.Events.get();\n\nconsole.log('All Events:', allEvents);\n\n// Get events with optional filters\nconst params = {\n startDate: new Date(Date.now() - 24 * 60 * 60 * 1000), // optional, last 24 hours\n endDate: new Date(), // optional\n event: 'opened', // optional, filter by event type\n}\nconst filteredEvents = await sendlayer.Events.get(params);\n\nconsole.log('Filtered Events', filteredEvents)\n```\n\n### Webhooks\n\n```javascript\nimport { SendLayer } from 'sendlayer';\n\n// Initialize the client\nconst sendlayer = new SendLayer('your-api-key');\n\n// Create a webhook\n// Webhook event options: bounce, click, open, unsubscribe, complaint, delivery\nconst params = {\n url: 'https://your-domain.com/webhook',\n event: 'open'\n}\n\nconst webhook = await sendlayer.Webhooks.create(params);\nconsole.log('Webhook created:', webhook);\n\n// Get all webhooks\nconst allWebhooks = await sendlayer.Webhooks.get();\nconsole.log('Webhooks:', allWebhooks);\n\n// Delete a webhook\nawait sendlayer.Webhooks.delete(123);\n```\n\n## Error Handling\n\nEvery SDK error extends `SendLayerError`, so one `catch` handles them all. Use\n`instanceof` when you need to branch:\n\n```javascript\nimport {\n SendLayer,\n SendLayerError,\n SendLayerRateLimitError,\n SendLayerValidationError\n} from 'sendlayer';\n\ntry {\n await sendlayer.Emails.send({\n from: 'sender@example.com',\n to: 'recipient@example.com',\n subject: 'Test Email',\n text: 'This is a test plain text email message'\n });\n} catch (error) {\n if (error instanceof SendLayerRateLimitError) {\n console.error('Rate limited:', error.message);\n } else if (error instanceof SendLayerValidationError) {\n console.error('Invalid request:', error.message);\n } else if (error instanceof SendLayerError) {\n console.error(`SendLayer error ${error.statusCode}:`, error.message);\n }\n}\n```\n\n### Error Types\n\n- `SendLayerError`: base error for everything the SDK throws\n- `SendLayerAuthenticationError`: invalid API key (401)\n- `SendLayerValidationError`: invalid parameters, for 400 and 422 as well as\n input the SDK rejects locally\n- `SendLayerNotFoundError`: resource not found (404)\n- `SendLayerRateLimitError`: rate limit exceeded (429)\n- `SendLayerInternalServerError`: internal server error (500 only)\n- `SendLayerAPIError`: any status not covered above, including other 5xx\n\n### Error Details\n\nEvery error carries the same properties, so you can read them without first\nnarrowing to a subclass:\n\n| Property | Description |\n| --- | --- |\n| `message` | The API's own message text, or the SDK's message for local errors |\n| `statusCode` | HTTP status of the response; `undefined` for local errors |\n| `response` | Decoded response body, or `undefined` when unavailable |\n| `errors` | Raw SendLayer `Errors` entries, each with a numeric `Code` and `Message` |\n| `codes` | The numeric codes from `errors`, for convenient branching |\n\n```javascript\ntry {\n await sendlayer.Emails.send(params);\n} catch (error) {\n console.error(error.message); // e.g. \"Recipient email is suppressed\"\n\n for (const entry of error.errors) {\n console.error(entry.Code, entry.Message); // e.g. 14 Recipient email is suppressed\n }\n\n if (error.codes.includes(14)) {\n // recipient suppressed\n }\n}\n```\n\n`errors` is an empty array when the SDK raises the error locally (input\nvalidation, network failures) and when the API returns a body that isn't the\nJSON `Errors` shape, so check `error.errors.length` before relying on it.\n\n`message` holds the API's text verbatim, joining multiple messages with `; `.\nNote that `SendLayerAPIError` is the one type whose `message` keeps an\n`API Error