SellBigger

AI-driven outbound, booked meetings included

None readiness

About

What is SellBigger

SellBigger runs AI-driven outbound across email, LinkedIn, InMail, voicemail drops, and phone — automating prospecting, enriching contact data, identifying decision-makers, and booking meetings without manual SDR intervention. It's built for SDR and BDR teams at mid-market and enterprise companies that need to scale pipeline without proportionally scaling headcount. The standout capability is its done-for-you AI SDR tier: one seat deploys eight AI profiles running 15,000 emails and 2,500 LinkedIn connections per quarter, with daily first-line responses and automated meeting booking included. No public API is available, so SellBigger can't be driven programmatically or wired into a broader agentic stack — what you see in the UI is what you get.

Outreach AI Sales Ops

Capabilities

Key features

Multichannel outreach

email, LinkedIn, and phone in one cadence

Native CRM + team chat integration

first-party connectors, no middleware required

AI capabilities

autonomous multi-step actions, AI-drafted personalised copy

Workflow

multi-step sequences, email + LinkedIn + phone

Data

intent signals, visitor identification

Our verdict

Vanderbuild take

SellBigger is a done-for-you multichannel outreach platform aimed squarely at SDR and BDR teams that want pipeline activity automated rather than just assisted — it's closer to an outsourced AI SDR service than a self-serve sequencer. On the agentic readiness front, there's no public API and no MCP server, so you can't drive this from an external agent or plug it into an orchestration layer — it's UI-only, full stop. Budget tier 3 is accurate: the Agentic AI Assistant starts at $1,250/month plus a $500 setup fee per AI SDR, so you'll want an operator who knows how to configure sequences and LinkedIn workflows to extract real value. No published case studies exist on the site, which makes it harder to benchmark expected outcomes before committing at that price point.

Mateusz Sekta

Founder, vanderbuild

The wedge

Agentic stack profile

API

Not public

No public programmatic access.

No public API. Not usable from an agent without scraping.

Agentic readiness

None

Not usable from an agent without scraping.

No public API. UI-only. Not usable from an agent without scraping, which we don't recommend.

Stack role

Sequencer · AI agent

Where this tool slots into an agentic pipeline.

Plays the role of Sequencer + AI agent in an agentic pipeline. Use it to send and track multi-step outbound cadences across channels; act autonomously on inbox, scheduling, or research work.

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