Is your email going to spam? Check if your IP or Domain is blacklisted on Spamhaus, Barracuda, and others.
Blacklists happen. Hackers, shared hosting, or simple mistakes can tank your availability. ObserveOne monitors your site uptime 24/7.
Side-by-side breakdowns, no fluff.
If your emails are landing in the Spam folder, your IP address might be on a DNSBL (DNS Blacklist). Mail servers checking these lists will automatically reject or junk your messages.
Being blacklisted is the #1 reason for sudden drops in email open rates.
If you share an IP with a spammer, you get punished too. Always monitor shared IPs.