Comparison

Inboxproof vs the other deliverability tools

A plain comparison of what each tool does, what it costs, and who it is for. No marketing spin.

Feature	Inboxproof	MXToolbox	GlockApps	dmarcian
Free DMARC checker	Yes	Yes	Yes	Yes
SPF checker	Yes	Yes	Yes	Yes
DKIM checker	Yes	Yes	Yes	Yes
DMARC record generator	Yes	No	Yes	Yes
IP reputation (RBL) check	Yes	Yes	Yes	Yes
Daily monitoring + alerts	Yes (Pro)	Paid add-on	Yes	Yes
Public shareable report	Yes	No	No	No
Deliverability score (0-100)	Yes	No	Yes	Yes
Starting price	$14.50/mo	Free / $49.50/mo	$15/mo	~$40/mo

Who each tool is for

Inboxproof

For small teams and solo founders who want a clear score, a plain-English fix list, and daily monitoring without enterprise pricing. The free checker is the fastest way to see your domain's current state, and Pro adds monitoring and alerts.

MXToolbox

A broad DNS and email diagnostics suite. Great for one-off lookups and network diagnostics, but the monitoring and DMARC features are split across paid tiers and the UI is dense for non-experts.

GlockApps

A solid DMARC-focused platform with good reporting. Priced for mid-market teams; the free tier is limited and the full value is in the paid plans.

dmarcian

A DMARC-first platform with strong aggregate-report parsing. Aimed at teams already deep in DMARC; the entry price is higher and the tooling assumes you know the space.

Why small teams pick Inboxproof

One score, plain English. A 0-100 deliverability score and a fix list you can act on, not a wall of DNS output.
Free checker with no signup. Run the full check in seconds; share the result with a public link.
Monitoring without enterprise pricing. Daily checks and alerts at $14.50/mo, no lock-in, cancel anytime.
Shareable reports. Every audit produces a public link you can send to a client or teammate.

For agencies

Run an agency? Monitor 25 client domains on one dashboard, white-label the reports, and get daily alerts when a record breaks. One plan covers your whole client book.

See the agency plan · or read the agency guide.

For developers

If you're building a product that sends email, embed deliverability in your stack. One REST call returns the same 7-check audit the free tool runs, scored the same way. Bearer auth, JSON in, JSON out. 100 audits/day on Pro, 500/day on Agency.

Read the API docs · or run the free CLI in your terminal.

Try the free checker

Run the full deliverability check on your domain in seconds. No signup.

Run a free audit