Eesier's prospecting agent vs Mailshake: Outreach Tool vs Autonomous AI SDR [2026]
Comparison

Eesier's prospecting agent vs Mailshake

Mailshake is a classic cold-outreach tool (email + LinkedIn) operated by human SDRs. The prospecting agent is the standalone autonomous AI SDR with database, AI, and WhatsApp built in.

Mailshake is a US cold-outreach platform combining email sequences + LinkedIn, designed for human SDRs running cadences. The prospecting agent is a full autonomous AI SDR — built-in 60M+ company database, AI that writes every message, conversational qualification, native WhatsApp channel — at $497/month flat.

What's the difference between the prospecting agent and Mailshake?

Mailshake sends emails (and InMails). Human SDR writes, monitors, qualifies. The prospecting agent eliminates the SDR — agent does it all.

AspectMailshakeProspecting agent
CategoryCold outreach toolAutonomous AI SDR
Built-in B2B databaseNoYes (60M+ companies)
Who operatesHuman SDRAI agent
AI personalizationLimitedCore (every message researched)
WhatsAppNoYes (native)
PricingUSD 59-99/user/month$497/month total

Operated tool vs autonomous agent

Mailshake is the truck. The prospecting agent is the truck + driver. Same problem, different layers of solution.

Teams with senior SDRs already in place can use Mailshake as their toolkit. Teams without (or wanting to avoid) human SDRs solve it directly with eesier.

Total cost

Mailshake USD 59-99/user + SDR + data: USD 2-4K/month. The prospecting agent: $497/month total.

Mailshake wins on isolated license price. The prospecting agent wins on cost-per-qualified-meeting generated.

Combining Mailshake and the prospecting agent

Rarely useful — both solve the same layer. Edge case: international operation with Mailshake in US and the prospecting agent in LATAM/Brazil.

For single-market teams, the prospecting agent alone solves it.

Perguntas frequentes

Does Mailshake have built-in B2B data?
No. You import lists. The prospecting agent has 60M+ companies built in.
Does the prospecting agent do LinkedIn outreach?
Uses LinkedIn for research context, but operates via email, WhatsApp, and voice calls for actual outreach.
Free trial?
Yes, no credit card. Then $497/month flat.
Cancel anytime?
Yes — the prospecting agent is monthly, no annual commitment.
$ 497
por mes

Un plan. Sin compromiso. Cancela cuando quieras.

The prospecting agent starts at $497/month — less than the cost of a sales intern and a fraction of what a stack of separate prospecting tools would cost.

Cold outreach without needing a human SDR

$497/month. Database + AI + email + WhatsApp + voice.

Prueba el agente de prospección
Prueba el agente de prospección