Top 5 best ABM (Account-Based Marketing) agencies in 2026

You have a list of strategic accounts in mind and a simple objective: open doors, win appointments, advance opportunities. For us, ABM is not just another trend or acronym, it is a very concrete method: talking to the right decision-makers with useful messages, credible evidence and clear follow-up in the CRM. In 2026, in France as in Europe, the difference is not based on volume, but on relevance, the quality of content and the real alignment between marketing and sales.

In this guide, we have selected five ABM agencies that can deliver quickly and cleanly. You will find how they work, the sectors they know, examples of good cases, budget benchmarks for a pilot of six to eight weeks, as well as a comparison table and a mini-guide to choose according to your average basket and the length of your sales cycle. The selection is independent and based on verifiable public signals, so you can decide transparently. If your ambition is to turn a short list of accounts into tangible opportunities, you are in the right place.

Summary in 5 points

• When ABM is the right choice: LCA greater than €30,000, long sales cycle, several decision-makers per account, list of accounts already identified. If your goal is to open named doors rather than buying anonymous volume, ABM is relevant.
• What a good agency delivers in 6 to 8 weeks: a prioritized list of 50 to 150 accounts, the mapping of decision-makers, two or three messages per persona, two personalized proof contents, LinkedIn orchestration plus email plus social selling, a connected CRM with a readable pipeline dashboard.
• The minimum stack to succeed: a clean CRM and clear steps, Sales Navigator to aim right, an engagement tool for sequences, GDPR enrichment for emails and mobiles, possibly intent signals to sort out hot accounts. Add a sales-side SLA with support within 24 to 48 hours.
• Budget benchmarks for an ABM pilot: over 6 to 8 weeks, expect 8 to 20 thousand euros in media depending on the desired reach, 8 to 15 thousand euros in fees for strategy and execution, 3 to 8 thousand euros for personalized content. Adjust to the complexity of the accounts and the number of markets targeted.
• The KPIs that really matter: Share of targeted accounts that engage, appointments obtained with the right decision-makers, opportunities created, cost per opportunity, speed of transition from interest to appointment. Decide in week 6 with a simple and written rule: go if the share of accounts committed and the cost per opportunity are within the accepted window, pivot if the commitment increases but the cost is too high, stop if neither of them progresses.

Our selection criteria

• Public evidence understandable by a non-specialist, ideally up to SQL and opportunities.
• Method clear from start to finish, from account targeting to pipeline reading and governance.
• CRM and RevOps integrations to connect marketing and sales reliably.
• Creatives and content designed for B2B decision-makers, with short formats and numerical cases.
• Execution capacity and team rituals to iterate every one to two weeks.
• Sectors and languages really controlled, in France and in Europe.

#1 Growth Room - ABM controllable in six weeks, aligned CRM and pipeline

What they do

Growth Room sets up short and measurable ABM campaigns. The team combines account-by-account targeting, educational creations, LinkedIn Ads, and CRM governance to track key steps to opportunity.

Forces

• Short sprints and rituals shared with your teams.
• Pages and campaigns that feature evidence.
• HubSpot or Salesforce integration for readable pipeline reporting.

What we liked

• A very concrete framework from week zero.
• Three hypotheses tested with various designs, then a clear decision in week six.

Ideal for

SMEs, ETI and B2B scale-ups who want an ABM that is easy to read by sales management and who refuse endless preparation tunnels.

#2 Momentum ITSMA — ABM enterprise and major international accounts

What they do

Momentum ITSMA is recognized for ABM among international companies. The approach favors co-construction with sales, highly targeted content and multi-country orchestration.

Forces

• Proven ABM method for complex purchasing committees.
• Executive storytelling and high-end multi-channel activations.
• Sales marketing and C-level coordination.

What we liked

The ability to advance major deals thanks to content that is really useful for decision-makers.

Ideal for

International groups and high-value deals that require personalization, governance and careful production.

#3 Punch! B2B - Powerful ABM creatives to open doors in UK and EU

What they do

Punch! B2B designs creative ABM campaigns that get specific accounts to react. The team focuses on surprising formats, clear messages and strong commercial proximity.

Forces

• Distinctive creation that goes off the beaten path.
• Fast and iterative execution.
• Work closely with sales teams.

What we liked

Ideas that live beyond the announcement, easy to relay by salespeople to their interlocutors.

Ideal for

B2B SaaS and services that struggle to get answers and want a memorable campaign from a short list.

#4 Strategic IC - ABM and inbound for medium to long cycles

What they do

Strategic IC combines ABM and inbound to fuel sales cycles of 3 to 9 months. The agency combines evidence-based content, account targeting, and LinkedIn Ads, while measuring the stages of the pipeline.

Forces

• Content and advertising alignment.
• Clear narration of customer cases.
• Read pipeline accessible to sales management.

What we liked

Realistic activation plans for teams that don't have fifty creations at hand, but who want to scale up properly.

Ideal for

Growing B2B companies that want legible and sustainable ABM rather than a one-off coup.

#5 Radiate B2B - ABM driven by intent signals and programmatics

What they do

Radiate B2B connects intent signals and media buying to the account. The platform agency activates your lists of accounts in display and social mode and connects the signals to the CRM.

Forces

• Count-by-account targeting across multiple channels.
• Exploitation of intent data.
• Clear dashboards for marketing and sales.

What we liked

Pragmatic execution on current active accounts, with reporting that is easy to read every week.

Ideal for

Companies that already have a list of accounts and want to work on it continuously, with media support.

Comparison table: best ABM agencies 2026

How to choose your ABM agency in 2026?

• Si your cycle is long and your basket is high then Ask for a six-week pilot with three created hypotheses and a reporting pipeline that can be read as early as week two.
• Si You already have HubSpot or Salesforce then require clean end-to-end integration, with standardized fields and pipeline steps monitored weekly.
• Si You lack evidentiary content then Choose an agency that can produce short and quantified creations before spending on media.
• Si You manage several countries then check languages, access rights and governance to avoid blocks and duplicates.
• In any case Decide on the cost per opportunity and the rate of passage to the opportunity, not the click.

Mistakes to avoid

• Judging by CTR rather than by cost per opportunity.
• Start ABM without creating proof.
• Neglecting alignment with sales.
• Forget CRM documentation and step definitions.

Do you want an ABM pilot that is short and readable by Comex

You can explore our approach ABM and RevOps at Growth Room, designed to make quick decisions and connect campaigns to the pipeline without complicating teams' lives.