Mailtrail

Mailtrail is an AI assessment platform for organizations. An organization adds its employees and its students, an LLM writes the test, and the test goes out from that organization's own email domain rather than from a platform address nobody recognises.

Answers come back in, get graded, and land in React dashboards the organization can read by person or by cohort.

Dispatch and evaluation both run on Redis-backed queues, so neither sending a round of tests nor grading a round of answers happens inside a web request.

It runs on AWS. The monthly bill came down about 30% after I rewrote the slowest database queries, which were the ones the dashboards hit on every load.