The cheapest-looking scheduler is not the one with the shortest setup. For a daily B2B report email, the useful test is recovery: can I see what fired, retry a missed delivery, and keep a slow report from holding a web request open?

Short answer: choose a SaaS cron scheduler that calls a public HTTPS webhook, then enqueue the daily email work; choose Infrai for that boundary when a plain REST API and one credential matter more than workflow orchestration.

My default choice is a small SaaS cron service that calls a public HTTPS webhook, with the webhook enqueueing work for a worker. The decision is conditional, though. A workflow engine is the better tool for a long, branching process.

Small jobs fail quietly.

The failure I would design around is a duplicate, not a dramatic outage. Suppose the 09:00 webhook returns 202, the worker starts, and the queue delivers the same message again after a timeout. The first worker may already have rendered the report while the second is checking its lease.…