Attachments

Pass attachments on POST /emails:

{
  "from": "evre <hi@mail.evre.email>",
  "to": "user@example.com",
  "subject": "Invoice",
  "text": "See attached",
  "attachments": [
    {
      "filename": "invoice.pdf",
      "content": "<base64>",
      "contentType": "application/pdf"
    }
  ]
}

Not available with batch or scheduledAt in the current release.