mailboxlayer vs Namedays Calendar
Same instrument, two spec sheets — measured, not claimed.
mailboxlayer vs Namedays Calendar: common questions
Which is more reliable, mailboxlayer or Namedays Calendar?
On our scheduled checks, mailboxlayer leads on measured uptime — mailboxlayer at 100% versus Namedays Calendar at 91.2% 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, mailboxlayer or Namedays Calendar?
mailboxlayer has the lower median latency in our checks — mailboxlayer responds in 316 ms versus Namedays Calendar at 480 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 mailboxlayer and Namedays Calendar need an API key?
Namedays Calendar needs no key, while mailboxlayer requires a free API key. If you want to start calling without signup, reach for Namedays Calendar first.
Can I call mailboxlayer and Namedays Calendar from the browser?
Neither sends browser-friendly CORS headers reliably, so call mailboxlayer and Namedays Calendar from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.
Are mailboxlayer and Namedays Calendar free for commercial use?
mailboxlayer has unclear commercial terms, and Namedays Calendar 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.