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Create a QR code for a link, Wi-Fi, WhatsApp, contact and more, or read one from a photo.
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Email blacklist checker
Check whether a mail server's IP is on common spam blocklists.
- Free
- No sign-up
- Works on any device
About Email blacklist checker
Enter a mail server's IP address and it is checked against common DNS blocklists (DNSBLs) used by receivers to reject spam. If your messages bounce or land in junk, a listing is one possible cause. Each blocklist has its own removal process, so contact the one that lists you.
How to use Email blacklist checker
- Type the IP address of your mail server.
- Run the check against the common blocklists.
- Read which lists, if any, include the address.
Why use this tool?
- Private: everything happens in your browser. Nothing you enter is uploaded.
- Free, with no sign-up, no watermark and no limit on how often you use it.
- Works on phones, tablets and computers: Android, iPhone, Windows, Mac and Linux. Nothing to install.
- Free to embed on your own website, with a ready-made code to copy.
- Available in 10 languages.
Also known as
Frequently asked questions
What should I do if my IP is blacklisted?
Find the cause first, such as a hacked account or open relay, and fix it. Then follow the removal request process of that specific blocklist, because repeating the problem leads to relisting.
How do I find my mail server's IP?
Look up your mail domain's MX record or your sending host's address with the DNS lookup tool. Use the address of the server that actually sends your mail.
Does being listed on one list mean all my mail is blocked?
Not necessarily. Each receiver decides which lists to use, so a single listing may affect only some recipients. Still, check the list's rules for removal.
Is Email blacklist checker free?
Yes. Email blacklist checker on Toolipedia is free to use, with no sign-up and no watermark.
Is it safe to use?
Yes. Everything is worked out in your browser, and nothing you enter is sent to our server.
Does it work on my phone?
Yes. It works in any modern browser on Android and iPhone, as well as on tablets and computers. There's nothing to install.
Do I need an account?
No. Just open the page and use the tool. There's no sign-up and no email needed.
Can I put Email blacklist checker on my own website?
Yes. Use the Embed on your site button under the tool to copy a short piece of code and paste it into your page. It is free, needs no account, and the tool keeps working inside your page.