Send Invoice Reminder

POST /api/v1/invoices/{id}/send_reminder

Send a custom reminder email for an overdue or pending invoice. Similar to sending an invoice but focused on payment reminders.

Path Parameters

Request Body

Same as Send Invoice, but uses send_reminder_form prefix. Default subject: “Payment Reminder for Invoice #{number}”.

Request Example

{
  "send_reminder_form": {
    "recipient": "procurement@texas.com",
    "copy": "given@flixtechs.co.zw",
    "subject": "Invoice #INV-BA1F-1656 from Flixtechs",
    "content": "<div>Hi {{ invoice.customer.name }}, <br><br>A friendly reminder that your invoice #{{ invoice.number }} is due. <br><br>{%- button url: invoice.pay_url -%}Pay Now{%- endbutton -%}<br><br></div>"
  }
}

POST /api/v1/invoices/123/send_reminder HTTP/1.1
Host: koteshen.com
Authorization: Bearer {access_token}
Content-Type: application/json
Accept: application/json

{request_body}

Response

Status Codes:

• 200 OK - Reminder sent.
• 401 Unauthorized - Invalid or missing token.
• 404 Not Found - Invoice not found.
• 422 Unprocessable Entity - Invalid email or templating errors.

Success Response (200)

{
  "message": "Reminder sent to procurement@texas.com",
  "invoice_id": 123,
  "sent_at": "2025-10-21T00:00:00.000Z"
}