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Sales Enablement · head to head

Cognism vs Mailshake

Cognism logo

Cognism

Sales Enablement

B2B contact data that notifies European contacts and screens do-not-call lists as a product feature

From
On request
Rated
-
Full reviewWebsite
Mailshake logo

Mailshake

Sales Enablement

Email outreach and sales engagement software for cold email and multichannel sequences

From
$25/month
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Cognism united States coverage is behind ZoomInfo, and the gap shows most in mid-market American accounts where record density thins out.; Mailshake no free trial is offered, unlike some competing outreach tools.
  • They diverge on capability: Cognism covers Diamond Data, Mailshake covers Automated Email Sequences.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Cognism and Mailshake actually diverge.

Attributes where Cognism and Mailshake differ
AttributeCognismMailshake
Starting priceOn request$25/month
Pricing modelquotesubscription
PlatformsWeb, Chrome extension, REST APIweb
FoundedUnknown2015

Identical on both: free tier (No), user rating (Not yet rated), category (Sales Enablement).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Cognism

  • Diamond Data
  • Contact notification
  • DNC screening
  • Intent data
  • Browser extension
  • CRM enrichment

Only in Mailshake

  • Automated Email Sequences
  • Email Warmup & Verification
  • Data Finder
  • Unified Inbox
  • Power Phone Dialer
  • CRM Integrations
  • A/B Testing

What people use each for

The jobs each tool is most often brought in to do.

Cognism

  • A European outbound team that needs a defensible answer when legal asks where the phone numbers came fromnot Mailshake
  • Calling campaigns where verified mobile numbers rather than switchboard numbers determine connect ratenot Mailshake
  • Enriching an existing CRM of stale records with current job titles and direct dialsnot Mailshake
  • Prioritising accounts using intent signals before committing sales development capacitynot Mailshake

Mailshake

  • Running cold email outreach campaigns for sales prospectingnot Cognism
  • Automating multi-step follow-up sequences with A/B testingnot Cognism
  • Finding and verifying prospect contact data before outreachnot Cognism
  • Combining email and phone dialing in one outbound workflownot Cognism
  • Managing agency client outreach across separate billing teamsnot Cognism

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Cognism

  • United States coverage is behind ZoomInfo, and the gap shows most in mid-market American accounts where record density thins out.
  • The commercial model combines an annual platform fee, per-seat licences and credit allowances, so a quoted seat price consistently understates the total.
  • Diamond Data verified mobiles are a subset of the wider database rather than the whole of it, and the subset available for your target market should be tested before signing.
  • There is no free tier and no monthly rolling contract, so evaluating properly means committing to a year or relying on a short trial with limited data.
  • Coverage density varies sharply by country, with the United Kingdom strong and DACH and the Nordics noticeably thinner, which matters if your expansion market is the weak one.

Mailshake

  • No free trial is offered, unlike some competing outreach tools.
  • The phone dialer and larger data finder credit allotments are only available on the higher-priced Sales Engagement plan.
  • Pricing scales per user/email address, which can become costly for larger outbound teams.
  • CRM integrations (Salesforce, Pipedrive, HubSpot) are limited to the Email Outreach plan and above, unavailable on Starter.

Pricing, plan by plan

Cognism

On request
  • Cognism Platform$undefined/year
    • Annual platform fee plus per-seat licences
    • Credit allowances for exports and enrichment negotiated separately
    • No free tier and no monthly rolling term

Mailshake

$25/month
  • Starter$25/month
    • 1 email address per account
    • 1,500 email sends per month
    • Unlimited uploaded contacts and campaigns
  • Email Outreach$45/month
    • 2 email addresses per account
    • Unlimited email sends and campaigns
    • 50 free data finder credits
  • Sales Engagement$85/month
    • 10 email addresses per account
    • 2,500 free data finder credits
    • 5 phone numbers with unlimited North America dialer minutes
  • Agency$undefined/month
    • Unlimited email addresses
    • All Sales Engagement features
    • Custom pricing for agencies

Which should you pick?

Choose Cognism if

  • You need diamond data.
  • You work on Web, Chrome extension, REST API.
  • You also want contact notification.
Cognism review

Choose Mailshake if

  • You need automated email sequences.
  • You work on web.
  • You also want email warmup & verification.
Mailshake review

Questions people ask

Is Cognism or Mailshake better?
Neither clearly leads. Cognism starts at On request and Mailshake at $25/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Cognism or Mailshake?
Cognism starts at On request and Mailshake at $25/month.
Does Cognism or Mailshake run on more platforms?
Cognism runs on Web, Chrome extension, REST API. Mailshake runs on web.
What is Cognism best used for?
Cognism is most often used for a european outbound team that needs a defensible answer when legal asks where the phone numbers came from, calling campaigns where verified mobile numbers rather than switchboard numbers determine connect rate, enriching an existing crm of stale records with current job titles and direct dials, prioritising accounts using intent signals before committing sales development capacity. Of those, a european outbound team that needs a defensible answer when legal asks where the phone numbers came from and calling campaigns where verified mobile numbers rather than switchboard numbers determine connect rate are not what Mailshake is typically brought in for.
What can Cognism do that Mailshake cannot?
Cognism covers Diamond Data, Contact notification, DNC screening, Intent data. Mailshake covers Automated Email Sequences, Email Warmup & Verification, Data Finder, Unified Inbox.

Answered from the vendors’ own pages

Cognism: Can a European company use it lawfully?

It notifies contacts held in its EU and UK database and screens do-not-call registers, which supports a legitimate interest basis. The balancing test, record keeping and handling of objections remain your obligation, not the obligation of the vendor.

Mailshake: How am I charged for Mailshake?

Billing is paid by the team and based on the number of users purchased. Each user allows one connected mail account, so a 3-user plan enables 3 connected mailboxes.

Source
Cognism: How does it compare with ZoomInfo on coverage?

ZoomInfo is stronger in the United States, Cognism is generally stronger on European mobile numbers. That, rather than feature lists, is what most head-to-head evaluations come down to.

Mailshake: Is there a free trial for Mailshake?

No free trial is offered. Instead, Mailshake provides concierge onboarding, deliverability training, and support resources to new customers.

Source
Cognism: Can we buy a single seat monthly?

No. Contracts are annual with a platform fee, which makes a genuine pilot harder than with credit-based self-serve vendors.

Mailshake: Can I cancel my Mailshake subscription at any time?

Yes, subscriptions can be cancelled at any time before the renewal date without additional charges, aside from any outstanding prorated costs.

Source
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