Compare outreach tools.

Comparison of Klenty, Amplemarket, Apollo

Compare by	KlentyPhone-first sales engagement with multichannel cadences	AmplemarketAI-assisted prospecting and multichannel sales engagement	ApolloB2B data and sales engagement in one platform
Best for	Phone-heavy SDR organizations	Growth-stage teams consolidating data and engagement	Teams that want data and sequencing together
Channels	Cold emailMultichannelSales engagement	Cold emailLinkedInMultichannelContact dataSales engagement	Cold emailMultichannelSales engagementContact data
Pricing model	Per-user subscriptions	Custom quote	Free tier + paid plans
Deployment	Cloud platform	Cloud platform + extension	Cloud platform + extension
Core capabilities	Multichannel cadences Dialer CRM integration Analytics	B2B data Signals Sequences AI workflows	B2B database Email sequencing Dialer CRM enrichment
Where it stands out	Strong calling workflow Cadences coordinate several sales touches	Connects data, signals, and execution Strong end-to-end outbound scope	Broad prospecting and engagement coverage Reduces the need for a separate data vendor
What to check first	More process-heavy than email-only tools LinkedIn execution is not its main differentiator	Less transparent self-serve evaluation May be too broad for a single-channel use case	Credit rules can make total cost harder to model Contact data should still be verified before high-volume sending
Source check	Vendor documented · checked 2026-09-17 Read profile →Vendor source ↗	Vendor documented · checked 2026-09-17 Read profile →Vendor source ↗	Vendor documented · checked 2026-09-17 Read profile →Vendor source ↗

Best for

Klenty

Phone-heavy SDR organizations

Amplemarket

Growth-stage teams consolidating data and engagement

Apollo

Teams that want data and sequencing together

Channels

Klenty

Cold emailMultichannelSales engagement

Amplemarket

Cold emailLinkedInMultichannelContact dataSales engagement

Apollo

Cold emailMultichannelSales engagementContact data

Pricing model

Klenty

Per-user subscriptions

Amplemarket

Custom quote

Apollo

Free tier + paid plans

Deployment

Klenty

Cloud platform

Amplemarket

Cloud platform + extension

Apollo

Cloud platform + extension

Core capabilities

Klenty

• Multichannel cadences
• Dialer
• CRM integration
• Analytics

Amplemarket

• B2B data
• Signals
• Sequences
• AI workflows

Apollo

• B2B database
• Email sequencing
• Dialer
• CRM enrichment

Where it stands out

Klenty

• Strong calling workflow
• Cadences coordinate several sales touches

Amplemarket

• Connects data, signals, and execution
• Strong end-to-end outbound scope

Apollo

• Broad prospecting and engagement coverage
• Reduces the need for a separate data vendor

What to check first

Klenty

• More process-heavy than email-only tools
• LinkedIn execution is not its main differentiator

Amplemarket

• Less transparent self-serve evaluation
• May be too broad for a single-channel use case

Apollo

• Credit rules can make total cost harder to model
• Contact data should still be verified before high-volume sending

Source check

Klenty

Vendor documented · checked 2026-09-17

Read profile →Vendor source ↗

Amplemarket

Vendor documented · checked 2026-09-17

Read profile →Vendor source ↗

Apollo

Vendor documented · checked 2026-09-17

Read profile →Vendor source ↗

Use this as a shortlist, not a final verdict. Pricing and limits change, so confirm the details with the vendor and test each product with your own workflow.