Unspam

Key points

• Category: Inbox placement & seed testing
• Pricing: Freemium
• Best for: Teams validating placement before or during a campaign.
• Placement reporting across providers
• Spam and content scoring
• Pre-send validation workflow

What Unspam is

Unspam is a free-to-start email deliverability testing tool combining a spam score checker, inbox placement testing across roughly 10 seed mailboxes at 7 major providers, blacklist checks, and rendering previews across 50+ email clients with an AI heatmap of subscriber attention. It publishes benchmark data showing the average inbox rate across mail it tests.

Users send a campaign to a generated test address to get a spam score with expandable explanations for authentication, content and link issues, then run a separate inbox placement test to see per-provider inbox/tab/spam results. Automatic recurring testing and an API (spam-check, inbox-placement, client-previews, heatmap endpoints) let teams schedule checks or integrate results into other systems.

It sits in the inbox placement & seed testing part of an email stack - see where mail actually lands across providers. In practice it is the right pick when your priority is: teams validating placement before or during a campaign.

What it does well

The capabilities teams rely on most are placement reporting across providers, spam and content scoring, pre-send validation workflow. Taken together these cover the day-to-day work in this category, and they are the features worth testing during a trial rather than reading about.

Unspam publishes its own aggregate placement benchmark (roughly 63% primary inbox across tested mail) so users have a reference point, and its API exposes placement, spam scoring, previews and heatmaps as separate callable endpoints for teams building this into their own monitoring stack.

In real use the strongest points people report are turns guesswork about placement into data; fast feedback loop before a large send.

Key features

• Placement reporting across providers
• Spam and content scoring
• Pre-send validation workflow
• Turns guesswork about placement into data
• Fast feedback loop before a large send

Pricing tiers

Unspam is a freemium product. Free plan includes 10 spam tests, 3 inbox placement tests and 10 previews per month; paid plans run $9-$29/month (Basic, Business, Agency) with higher monthly allowances and historical results, plus a custom White Label tier for API/agency use.

Pricing pages move often, so confirm the current figures with the vendor before you budget. The number worth modelling is not the licence fee on its own but the cost per delivered email once bounces, suppressed contacts and spam-foldered sends are taken out.

Ideal customer profile

• Best fit: Teams validating placement before or during a campaign.
• Where it sits in the stack: Inbox placement & seed testing - see where mail actually lands across providers.
• Budget profile: Freemium - suited to teams comfortable with this commercial model.
• Probably not for you if: seed results are a sample, not a guarantee for every recipient would block your team.

What it connects to

Unspam is commonly wired into Any ESP or email client via test-address sending, REST API for spam-check, inbox-placement, previews and heatmaps, Mailchimp, ActiveCampaign, HubSpot, Brevo and Datadog/PagerDuty/Slack via API. Check that the specific objects and events you rely on are covered, not just that a logo appears on the integrations page - shallow connectors are a frequent source of rework.

Where it falls short

No tool in this space is complete on its own. With Unspam the trade-offs to plan around are seed results are a sample, not a guarantee for every recipient; needs pairing with reputation work to fix problems it finds. None of these are reasons to avoid it - they are the gaps another layer of your stack needs to fill.

The free and low-cost tiers cap monthly test volume fairly tightly (as few as 3 inbox placement tests), and like all seed-list tools its 10-mailbox sample is a proxy for real subscriber behavior rather than a guarantee of actual list performance.

A useful test before committing: send a real campaign through your intended setup, then check where it actually lands across Gmail, Outlook, Yahoo and your customers' corporate filters. Tooling that looks identical on a feature list often behaves very differently once reputation and authentication are involved.

The essentials

Category

Inbox placement & seed testing

Pricing model

Freemium

Vendor

unspam.email

G2 rating

Not listed

Best for

Teams validating placement before or during a campaign.

Works alongside Warmy

Yes - warm-up, placement, DMARC

How it fits a deliverability stack

Deliverability is decided by four things: the reputation of the sending domain and mailbox, the quality of the list, correct SPF, DKIM and DMARC authentication, and proof of where mail actually lands. Unspam covers part of that picture. The mistake most teams make is buying four separate products for those four jobs and still having no single place that tells them whether the last campaign reached the inbox.

Warmy runs warm-up, inbox placement testing, email verification and DMARC monitoring as one platform, which is why Unspam usually sits alongside it rather than against it: it keeps doing what it is good at, while reputation, placement and authentication are handled in one loop.

Unspam's spam score and inbox placement tests are a pre-send diagnostic layer; pairing them with a warm-up routine for new sending domains addresses the reputation-building side that a one-time test cannot fix.