#383 — Send Branded Invoice Email with Payment Link

Repo: Twill-AI/facade State: open | Status: open Assignee: Unassigned

Created: 2025-07-01 · Updated: 2025-09-15

Description

Trigger branded invoice email with a payment link when a merchant chooses “Send Invoice by Email” from the UI. • Input validation: Ensure customer is selected, throw error otherwise • Fetch branding and customer email via merchant_id and customer_id • Generate payment link using PayEngine with input fields: • amount, order_id, description • Populate HTML template with: • Merchant logo, DBA name, description, amount, order ID • “Pay Now” button linking to the payment URL • Contact info in footer • Use SendGrid to send email from no-reply@twillpayments.com with subject Invoice from {{merchant.dba}}

In order to send payment links to customers of TwillAI users we need to update /integrations/{integration_id}/paymentlinks API to send emails from configured in SendGrid email address (with “on behalf of” logic using email provided per tenant, see https://github.com/Twill-AI/facade/issues/387) to the specified customer email.

AC:

• /integrations/{integration_id}/paymentlinks API contains new send_to field to enable UI to specify email address to send email to. If send_to was provided then send email from “notificatinos@twillpayments.com” (or other, see https://twill-network.slack.com/archives/C06UCQP1BFC/p1752053535984289) on behalf of provided per-tenant support email with all actions explained inhttps://github.com/Twill-AI/twill-iac/issues/110 and return relevant information (need to be found during implementation) in API response.
• There are logs allowi

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