Church Calendar vs mail.tm
Same instrument, two spec sheets — measured, not claimed.
Church Calendar vs mail.tm: common questions
Which is more reliable, Church Calendar or mail.tm?
On our scheduled checks, Church Calendar leads on measured uptime — Church Calendar at 100% versus mail.tm at 84.3% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Which is faster, Church Calendar or mail.tm?
mail.tm has the lower median latency in our checks — Church Calendar responds in 848 ms versus mail.tm at 709 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.
Do Church Calendar and mail.tm need an API key?
Neither needs a paid key — Church Calendar is callable with no signup, and mail.tm is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Church Calendar and mail.tm from the browser?
Neither sends browser-friendly CORS headers reliably, so call Church Calendar and mail.tm from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.
Are Church Calendar and mail.tm free for commercial use?
Church Calendar has unclear commercial terms, and mail.tm has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.