SES receives Gusto payroll emails at payroll@int.seahaven.com, stores
to S3, Lambda parses and posts a combined Slack notification (employee
payroll + contractor payments in one message) after a 10-minute SQS
batching window.
Removes Aurora Serverless, notifyPayroll Lambda, and @aws-sdk/client-rds-data.
Adds mailparser, SQS delay queue, and processPayrollEmail Lambda.
Queries Aurora for new payroll runs and contractor payments, sends
formatted Slack message with gross pay breakdown and total bank
withdrawal amount. Runs weekdays at 2pm ET, tracks notified payrolls
in DynamoDB to avoid duplicates.
- VPC with NAT Gateway for static outbound IP (52.86.95.107) for BoA API
- Payments stored as individual DynamoDB items keyed by check number
- Slack bot token fetched from SSM at runtime instead of CF parameter
- Slack Lambda scans payment items instead of reading single blob
