The short answer
If you mainly need to know when a sending domain or IP lands on a blacklist, and you send from more than five domains, BlacklistMonitoring costs less per domain than MxToolbox and checks more often. If you need inbound mailflow monitoring, SPF flattening or a managed delivery service, MxToolbox covers those and we do not.
Most teams who look for a MxToolbox alternative hit the same wall. The free account monitors one domain once a week, and the first paid plan, Delivery Center at $129 a month, covers 5 domains. An agency with 30 client domains or a cold email team with 40 secondary domains outgrows that fast.
MxToolbox vs BlacklistMonitoring side by side
MxToolbox prices are from its public pricing page and can change, so confirm them there before you decide. Our prices are on the pricing page, and yearly billing halves them, so Starter works out to $24 a month.
| MxToolbox | BlacklistMonitoring | |
|---|---|---|
| Entry paid plan | Delivery Center, $129/mo, 5 domains | Starter, $49/mo, 10 domains and IPs |
| Next plan | Delivery Center Plus, $399/mo, 5 domains | Business, $149/mo, 100 domains and IPs |
| Agency scale | Managed services, price on request | Agency, $499/mo, 500 domains and IPs, client workspaces |
| Free tier | Weekly blacklist monitoring for 1 domain | One live check without an account |
| Blacklist coverage | Adaptive sender blacklist monitoring | 109 IP and domain blacklists, checked every 60, 15 or 5 minutes by plan |
| SPF, DKIM, DMARC | Configuration analysis and DMARC reports | Record checks plus DMARC aggregate report parsing |
| Inbox placement tests | 30 or 100 a month | 50 a month on Business, 300 on Agency |
| Alert channels | Not detailed on the pricing page | Email, Slack, Microsoft Teams, signed webhook |
| White label reports | Not listed on the pricing page | Agency and Scale plans |
| Where MxToolbox wins | Mailflow monitoring, complaint reporting, SPF flattening, BIMI management, a huge free lookup toolkit |
Why teams switch from MxToolbox
- Domain caps. Both Delivery Center plans stop at 5 domains. Agencies, cold email teams and SaaS companies with separate marketing and transactional domains pass that on day one.
- Weekly checks on the free plan. A Spamhaus or Barracuda listing can cost a full week of sends before a weekly check sees it. Our plans recheck every 60, 15 or 5 minutes.
- Alerts without the fix. Each of our alerts names the list, the return code, the likely cause and the removal link for that list, so the person on call knows what to do next.
- Client reporting. Agencies get separate workspaces per client and white label reports they can send under their own name.
- Team chat alerts. Slack and Microsoft Teams channels mean the right person sees a listing while it is still small.
Who BlacklistMonitoring fits best
We built it for businesses whose revenue depends on email reaching the inbox. Cold email agencies running dozens of rotating domains use the agency deliverability monitoring setup. Email marketing agencies send clients monthly reports from the white label deliverability reports feature. Ecommerce and SaaS teams watch their transactional IPs and domains so password resets and order emails keep landing.
If you send from one domain through Google Workspace and rarely change anything, the MxToolbox free monitor may be enough. Once you manage more than a handful of domains or clients, the cost per domain and the check frequency start to matter more than the size of the free toolkit.
How to move your monitoring over in 15 minutes
- 1 Export or copy the list of domains and IPs you watch in MxToolbox.
- 2 Create your account and paste them into the bulk add box. Domains and single IPs are accepted, and the Scale plan also takes CIDR ranges.
-
3
Point your DMARC
ruaaddress at the reporting address shown in your workspace, next to the MxToolbox address if you want to run both for a month. - 4 Connect email, Slack, Teams or a webhook as your alert channel and send a test alert.
- 5 Keep MxToolbox running in parallel for one billing cycle, compare the alerts, then cancel the plan you no longer need.
What you get on every plan
Every plan checks each domain and IP on 109 DNS blacklists, including Spamhaus ZEN and DBL, Barracuda, SpamCop, SURBL and UCEPROTECT, and watches the SPF, DKIM, DMARC, MX, PTR and BIMI records behind them. When something changes, you get an alert with the exact record or listing that broke. The blacklist directory explains each list and its removal process, and the blacklist monitoring page covers the monitoring engine in more detail.
Frequently asked questions
What is the best alternative to MxToolbox?
For blacklist and DMARC monitoring across many domains, BlacklistMonitoring covers 10 domains and IPs for $49 a month and 100 for $149, checked as often as every 5 minutes. GlockApps is stronger for inbox placement testing alone, and EasyDMARC for DMARC enforcement projects. Pick by the job you need done most often.
How much does MxToolbox cost?
MxToolbox lists a free plan with weekly blacklist monitoring for one domain, Delivery Center at $129 a month for 5 domains and 500,000 messages, and Delivery Center Plus at $399 a month for 5 domains and 5,000,000 messages. Managed services are priced on request. Our MxToolbox pricing breakdown compares the cost per domain.
Is MxToolbox safe?
Yes. MxToolbox is a long running, legitimate company and its lookups only read public DNS records. Running a blacklist or SPF lookup there does not expose your mailbox or change anything on your domain. The same is true for the check on this page.
Is MxToolbox free?
The one-off lookup tools are free, and the free account includes weekly blacklist monitoring for one domain. Continuous monitoring of more domains, DMARC reports and inbox placement tests are on the paid Delivery Center plans.
Can I run BlacklistMonitoring and MxToolbox at the same time?
Yes. Monitoring only reads public DNS and blacklist data, and DMARC accepts several rua addresses in one record, so both services can receive the same reports. Many teams overlap for one month before cancelling one of them.
Does BlacklistMonitoring have an API?
Yes. The Scale plan includes the REST API, CIDR range monitoring, SSO and an audit log. See the API docs for the endpoints.