APOLLO GTM INTELLIGENCE · APOLLO.IO
APOLLO.IO
by Apollo.io · Authorized via Stackingo
$1.6B VALUATION
Nearly 100,000 paying customers
ONE PLATFORM FROM CONTACT TO CLOSED. SAVE UP TO 20%.
A 240M+ contact and 30M+ company database wired straight into sequences, a dialer and deal execution. More than 500,000 companies use the platform across free and paid tiers, of which nearly 100,000 are paying customers.
Stackingo gets you further.
240M+ contacts, 30M+ companies
ISO 27001 and SOC 2 certified
From $49 per user annually
50+ integrations including CRM
Sequences, dialer and inbound
Free tier with 10 export credits
FOUR REASONS WHY BUYERS CHOOSE STACKINGO
MORE THAN A DISCOUNT — A SMARTER
WAY TO BUY SOFTWARE.
20%
Average Cost Savings
Below OEM list price, structured within authorized programmes.
+
Advisory Included
Module fit, sizing & tier optimisation reviewed before quote.
1doc
One Commercial
Multi-region, multi-vendor stack on a single agreement.
25%
Renewal defence
Every cycle re-priced — never auto-renewed at list.
BUYER INTELLIGENCE
WHAT YOU SHOULD KNOW BEFORE
BUYING.
Six things experienced IT buyers wish they'd known earlier — plus the analyst evidence behind the OEM's market position.
01
Credits expire every billing cycle by contract
Apollo's terms state credits expire at the end of your billing cycle. Unused allocation vanishes, and a burst month pays overage at about $0.20 each.
04
SSO and API sit behind a three-seat minimum
SSO, API access and the international dialer are Organization tier at $119 per user annually, on a three-seat floor — $4,284 a year before credits.
02
A mobile number costs eight credits, not one
One credit reveals an email and eight reveal a mobile, so a phone-heavy team burns its allocation roughly eight times faster than the headline implies.
05
Subscriptions auto-renew and are non-cancelable
Apollo's terms make payments nonrefundable and the term non-cancelable, renewing in full unless you give 30 days' written notice.
03
Data accuracy is geographically uneven
Reported accuracy runs near 88% for US contacts against 60-73% outside North America. An EMEA or APAC team buys a different product at the same price.
06
The 2018 breach surfaces in every security review
Apollo disclosed in October 2018 that a database of more than 200 million contact records was stolen. It is indexed on Have I Been Pwned.
GARTNER MAGIC QUADRANT
Not evaluated · Gartner MQ
ISO 27001 and SOC 2 certified by A-LIGN
NOT FEATURED
FORRESTER'S WAVE
Not evaluated · Forrester Wave
NOT FEATURED
ABOUT APOLLO.IO
PROSPECT DATA, SEQUENCES, DIALER AND DEAL EXECUTION, ON ONE SEAT.
Apollo.io, Inc. was founded in San Francisco in 2015 by Tim Zheng and Ray Li, trading originally as ZenProspect. Matt Curl became chief executive in February 2026, with co-founder Tim Zheng continuing as Chairman of the Board.
Apollo.io delivers a 240M+ contact and 30M+ company database, multichannel sequences, anonymous visitor identification, a dialer, deal execution boards and an agentic AI Assistant on one platform, with Salesforce, HubSpot, Zoho and Pipedrive sync and a Model Context Protocol server for LLM clients.
Apollo has raised roughly $250M, including a $100M Series D at a $1.6B valuation led by Bain Capital Ventures in August 2023, and reported ARR approaching $200M in February 2026. It is ISO 27001 certified and SOC 2 certified by A-LIGN, and states GDPR compliance as both processor and controller.
BEST FOR
SMB Outbound Teams
Sales teams prospecting mostly into North America
STRONG FIT
Data + Engagement
One licence covering contact data and the sequences
REPLACES
Separate Data Stack
Collapse a database licence and a sequencer into one
Key Capabilities
INCLUDED IN ALL PLANS
Contact and Company Database
240M+ contacts and 30M+ companies with verified emails and phone numbers.
Multichannel Outbound Sequences
Email, call and task sequences with built-in deliverability guardrails.
Anonymous Visitor Identification
The Inbound module identifies website visitors and routes them into nurture.
Agentic AI Assistant
Natural-language workflows from prospecting to deal execution, shipped March 2026.
Dialer and Call Intelligence
Metered US and international minutes, AI call summaries and follow-ups.
CRM Sync and Enrichment
Salesforce, HubSpot, Zoho and Pipedrive sync with real-time record cleansing.
MORE FROM APOLLO.IO
THE APOLLO.IO ECOSYSTEM
Apollo.io is one platform, not a module set: Data, Outbound, Inbound, Deal Execution, the dialer and the AI Assistant all sit inside the same seat. Reach runs to 50+ connectors, among them Salesforce, HubSpot, Zoho, Pipedrive, Marketo and Clay. Stackingo bundles it with your wider GTM stack on one agreement.
FREQUENTLY ASKED QUESTIONS
GOT QUESTIONS?
WE'VE GOT ANSWERS.
The questions every buyer asks before purchasing through Stackingo—pricing, licensing, what's included, and what to expect.
01
What is the floor discount on Apollo.io?
The floor discount on Apollo.io via Stackingo is 10% off Apollo.io list — locked within the authorized Apollo.io partner programme, never an ad hoc markdown.
💡
Keep in mind: Credits, not seats, decide the Apollo bill. They expire at the end of every billing cycle, a mobile number costs eight of them, and overage runs about $0.20 each on a $50 minimum purchase.
02
How much do Apollo.io buyers save?
Most enterprises land around 20% off Apollo.io list on Apollo.io, a figure set through the authorized reseller channel.
⚠️
Apollo has 500,000+ companies on the platform across free and paid tiers, but nearly 100,000 paying customers — quote the second figure, never the first.
03
Why buy Apollo.io through Stackingo?
Buying Apollo.io through Stackingo means one negotiated front at 10%+ off (typically 20%) and candid guidance on where Apollo.io deals quietly leak budget:
Credit expiry is contractual, not a configurable setting
Mobile reveals cost eight credits against an email's one
Regional accuracy falls well below the US figure elsewhere
SSO and API sit on Organization with a three-seat floor
Auto-renewal needs 30 days' written notice to stop
The Inbound module is roughly $149 a month on top of seats
✓
That comes with a single structured quote across your evaluation and active renewal tracking, so nothing rolls over at full price.
04
Can Stackingo also implement Apollo.io?
More than licensing. Stackingo sells Apollo.io and can stand it up end to end — configuring Contact and Company Database, Multichannel Outbound Sequences, Anonymous Visitor Identification, Agentic AI Assistant, Dialer and Call Intelligence, and CRM Sync and Enrichment.
🛠️
Choose Stackingo's own delivery team, a certified partner Stackingo coordinates, or let Stackingo gather and benchmark competing implementation bids — all consolidated into one proposal alongside the licence.
05
What is Apollo.io and who is it for?
Built by Apollo.io, Inc., which raised a $100M Series D at a $1.6B valuation led by Bain Capital Ventures in August 2023.
Best fit · SMB Outbound Teams
Best fit · Data + Engagement
Typically replaces · Separate Data Stack
🎯
SMB Outbound Teams — sales teams prospecting mostly into North America
Data and Engagement — one licence covering contact data and the sequences
Typically replaces Separate Data Stack for teams collapsing a database licence and a sequencer into one
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