dukeo

Downdar watches your websites, APIs, ports, SSL certs, and DNS from 6+ global checkpoints, and pages you the second something breaks. Ping-based heartbeats catch cron jobs and background tasks that fail silently. Alerts hit Slack, Discord, Telegram, Teams, webhook, or email, with automatic recovery notices. Embeddable status pages keep customers in the loop without extra design work. Free for 30 days, plans start at $9/month.

Spamova flags disposable emails, domain typos, and suspicious infrastructure in one API call, about 150ms response time. Combines an actively maintained blocklist with machine learning to catch new disposable domains early, plus domain reputation checks. Returns both a true/false and a 0-100 risk score, so you decide how strict to be. Zero maintenance on your end, nothing to download or update. Free for 30 days, plans start at $9/month for 10k checks.