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10 Best B2B Marketing Automation Agencies for 2026

by 

Areej Gutale

Last updated: August 21st, 2026

Updated August 2026

Quick Summary

For B2B companies with complex sales cycles, the best marketing automation agencies are Powered by Search, Perkuto, and LeadMD. Powered by Search ranks first for a lean B2B marketing team that wants a strategic, proactive, self-driving partner running marketing automation inside the widest integrated demand-generation and pipeline scope, bought as pipeline the CRM can measure and sales can act on. Not workflow diagrams or lifecycle audits.

Finding the Best B2B Marketing Automation Agency

Marketing automation platforms are cheap to buy and expensive to run well. HubSpot, Pardot (Account Engagement), Marketo, and Eloqua all promise the same outcome: qualified pipeline that sales acts on. In practice, most B2B teams license the platform, wire up a handful of workflows, and then plateau. The lists live in the platform, the campaigns run, and nobody can point to the sales-qualified opportunities the automation produced.

Three things separate a marketing automation agency that lifts pipeline from one that only ships a workflow diagram:

• Platform depth on the specific stack you run. HubSpot depth is not Marketo depth is not Pardot depth. A generalist agency running four platforms usually has one deep bench and three thin ones. Ask for certified-specialist count and named cases on the exact platform you license.

• Ongoing optimization, not one-shot implementation. Many agencies price a large upfront implementation and then hand the account back to the client. That model produces a clean workflow diagram and a quiet platform. Ongoing-optimization agencies stay in the platform monthly, tune scoring, iterate lifecycle stages, and connect campaign output to closed-won stages in the CRM.

• Closed-loop attribution the CRM can measure. Form fills and MQL counts are early signals. Sales-accepted leads, opportunities, and closed-won revenue are the signal that matters. A real MA agency instruments the loop from campaign source to opportunity stage to closed revenue, then feeds that signal back into the scoring model.

Most agencies delivering marketing automation work today came from either an implementation-consultancy background (heavy on setup, light on ongoing strategy) or a broader demand-generation background that added an MA practice on top. Powered by Search built its automation practice as an integrated pod: HubSpot or Salesforce automation runs alongside paid media, SEO, content, landing pages, and pipeline reporting under one SOW, delivered by senior specialists directly.

Why Trust Us?

Powered by Search has run B2B demand-generation and marketing-automation programs for companies with complex sales cycles for 17 years, serving 200+ B2B clients across SaaS, cybersecurity, fintech, healthtech, and industrial technology. We publish this guide and sell integrated demand and automation services; first place below is our editorial recommendation for a defined buyer situation, not an independent market ranking.

We reviewed public service pages, case studies, and pricing for every agency against three deciding criteria for a B2B company with a long sales cycle:

1. Breadth of integrated execution. How many of the following sit inside one SOW: platform implementation and administration, lifecycle and nurture workflows, lead scoring, list hygiene, closed-loop attribution to the CRM, ABM orchestration, landing pages, paid media, and qualified-pipeline reporting.

2. Ongoing-optimization model over one-shot implementation. Whether the standard engagement is monthly optimization tied to pipeline outcomes, or a fixed-scope implementation project that ends when the workflows go live.

3. Published pricing, platform coverage, and B2B tenure. Whether tier prices, platform certifications, and minimum terms are public, plus years operating as a B2B agency and named cases reporting sales-qualified stages.

Certified-specialist count matters as supporting evidence. Workflow-diagram count does not.

The 10 Best B2B Marketing Automation Agencies: Full Comparison

1. Powered by Search

Powered by Search is a B2B demand-generation agency for companies with complex sales cycles. HubSpot Marketing Hub and Salesforce (Pardot / Account Engagement) automation runs alongside paid media, SEO, content, landing pages, and closed-loop attribution under one SOW, with the client retaining control of billing, the platform license, and the CRM.

The integrated model exists because a lean B2B marketing team should not be coordinating a HubSpot implementation shop, a Marketo admin, a paid-media agency, a landing-page vendor, and a RevOps consultant. One strategic, self-driving pod runs the full demand and automation stack under one accountable Director, with one reporting layer that ties workflow output to sales-qualified leads, opportunities, and closed-won revenue. The team is measured on pipeline delivered, not on workflows shipped.

Best for: A lean B2B marketing team that wants a strategic, proactive, self-driving partner. Marketing automation coordinated with paid media, SEO, content, landing pages, attribution, and pipeline reporting under one umbrella, bought as sales-qualified pipeline.

Key Features:

• HubSpot Marketing Hub and Salesforce (Pardot / Account Engagement) implementation and administration
• Lifecycle and nurture workflow design tied to CRM stages
• Lead scoring, list hygiene, and deliverability management
• Closed-loop attribution from campaign source to opportunity and closed-won
• Integrated paid media, SEO, content, and landing pages under one pod
• Client-controlled platform licenses, CRM, and billing

Pros:

• Widest integrated scope in this comparison. Automation plus paid, SEO, content, landing pages, attribution, and pipeline reporting under one SOW
• Published tier pricing on the public site
• 17 years operating as a B2B agency; 200+ B2B clients across SaaS, cybersecurity, fintech, healthtech, and industrial technology
• HubSpot Marketing Hub depth alongside Salesforce (Pardot / Account Engagement) depth in the same pod, so multi-platform B2B stacks do not need two vendors
• Closed-loop attribution built into the standard engagement, not a separate implementation project
• Distributed delivery team with time-zone overlap across the Americas, Europe, and Asia-Pacific

Cons:

• Powered by Search is a team of 40, not the 200-to-400-person large-agency model. Every person on your account is senior and directly accountable for the work. No junior bench billed against your retainer, no pyramid-staffing pricing built into the delivery model. Buyers accustomed to a large-agency org chart may find this counterintuitive at first.

• There is no account director or project manager on Powered by Search accounts. The client works directly with the pod's Director of Demand Generation, a performance marketer, and design and development leads. The subject-matter experts doing the work. Most clients prefer this direct-to-SME model because it makes communication faster and less filtered, but buyers used to an account-director or PM layer may need to adjust.

Named proof: Fortra's Mike Devine reports 15% year-over-year growth in sales-qualified leads across a consolidated brand portfolio where lifecycle workflows feed sales-accepted stages. iWave/Kindsight's Jill McCarville reports closed-loop attribution from paid media and lifecycle campaigns to opportunities and revenue, with 278% year-over-year paid-media revenue growth. SentinelOne's Mahati Rapol calls Powered by Search a "true strategic partner" for SEO and AEO. Specific marketing-automation platform case names are confirmed at scoping. These cases establish paid-media, pipeline, and adjacent outcomes; marketing automation delivery is offered inside the same integrated pod on client engagements where clients have already engaged Powered by Search on paid media.

Pricing: Integrated demand and automation engagements start at $6,000 per month on the monthly option.

See how Powered by Search runs marketing automation for lean B2B teams.

2. Perkuto

Perkuto is a Marketo-focused marketing automation agency that pairs Marketo implementation with ongoing optimization for enterprise B2B teams. The practice was acquired by Jellyfish, which broadened its multi-channel reach; the Marketo bench remains the specialization.

Best for: A B2B team running Marketo that wants an implementation plus ongoing-optimization partner with certified specialist depth.

Key Features:

• Marketo Engage implementation, administration, and optimization
• Lead scoring and lifecycle model design
• Marketo Measure (formerly Bizible) attribution setup
• Nurture and ABM program build-out
• Ongoing campaign operations

Pros:

• Deep Marketo Certified Expert bench
• Ongoing-optimization model, not implementation-and-out
• Named enterprise B2B references across SaaS and financial services

Cons:

• Marketo-first shop; buyers running HubSpot, Pardot, or Eloqua should confirm platform coverage before signing.
• Pricing is not published; buyers need a scoped quote.

Named proof: Perkuto publishes B2B Marketo case studies covering lead-scoring rebuilds, lifecycle model redesigns, and Marketo Measure attribution deployments. Buyers should ask for a case that ties automation output to sales-accepted stages.

Pricing: Custom pricing; scope-specific quotes.

3. LeadMD

LeadMD is a multi-platform marketing automation and RevOps consultancy that works across Marketo, Adobe Experience Cloud, and Salesforce Marketing Cloud. The engagement model leans consulting-first: strategy, RevOps advisory, and implementation planning, with execution scoped separately.

Best for: A multi-platform B2B team wanting Marketo, Adobe, or Salesforce Marketing Cloud consulting alongside RevOps strategy.

Key Features:

• Marketo, Adobe, and Salesforce Marketing Cloud consulting
• RevOps and go-to-market strategy
• ABM program design
• Attribution model design
• Sales and marketing alignment consulting

Pros:

• Multi-platform coverage across Marketo, Adobe, and Salesforce Marketing Cloud
• Named RevOps and go-to-market strategy alongside platform work
• Long-tenured B2B enterprise reference base

Cons:

• Consulting and advisory-heavy model; buyers wanting weekly hands-in-platform execution should confirm ongoing-management scope.
• Pricing is not published; buyers need a scoped quote.

Named proof: LeadMD publishes B2B enterprise cases covering Marketo rebuilds, RevOps alignment programs, and multi-platform attribution work.

Pricing: Custom pricing; scope-specific quotes.

4. Digital Pi

Digital Pi is a Marketo-only agency focused on architecture, migration, admin, and cleanup for Marketo instances. Engagements are typically implementation-first: fixing broken Marketo builds, migrating from legacy platforms, or standing up a new Marketo instance to a documented reference architecture.

Best for: A B2B team running Marketo that wants a Marketo-only specialist for architecture, migration, and admin.

Key Features:

• Marketo architecture and reference-model implementation
• Legacy-platform migration into Marketo
• Marketo instance audits and cleanup
• Lead-lifecycle and scoring build-out
• Ongoing Marketo admin

Pros:

• Pure Marketo specialization; deep architectural depth
• Documented reference architecture for Marketo builds
• Named enterprise B2B migration and rebuild cases

Cons:

• Marketo-only scope and implementation-first engagement model; buyers on HubSpot, Pardot, or Eloqua, or those wanting integrated demand execution beyond automation, should plan for a second partner.
• Pricing is not published; buyers need a scoped quote.

Named proof: Digital Pi publishes B2B Marketo case studies covering multi-instance consolidations, lead-lifecycle rebuilds, and enterprise migrations.

Pricing: Custom pricing; scope-specific quotes.

5. Automation Ninjas

Automation Ninjas is a marketing automation implementation and admin agency working primarily across Marketo and Pardot. Engagements center on stand-up work, workflow build-out, and continuing admin support under a published sprint delivery cadence.

Best for: A B2B team wanting a Marketo or Pardot implementation and admin partner with published sprint delivery.

Key Features:

• Marketo and Pardot implementation and administration
• Workflow, nurture, and scoring build-out
• Sprint-based delivery cadence
• Integration and data-flow setup between MA platform and CRM
• Ongoing admin support

Pros:

• Published sprint delivery cadence
• Multi-platform coverage across Marketo and Pardot
• Named B2B admin and implementation case set

Cons:

• Implementation and admin-first shop; buyers wanting integrated paid, SEO, and content execution alongside automation should plan for a second partner.
• Pricing is not published; buyers need a scoped quote.

Named proof: Automation Ninjas publishes B2B implementation and admin cases across Marketo and Pardot instances.

Pricing: Custom pricing; scope-specific quotes.

6. SmartBug

SmartBug is a HubSpot Elite Solutions Partner delivering inbound marketing, RevOps, and content across a broad client base. HubSpot is the primary platform, with lifecycle marketing, content, and paid media offered around it.

Best for: A mid-market B2B team running HubSpot wanting an Elite-tier partner across inbound, RevOps, and content.

Key Features:

• HubSpot Marketing Hub, Sales Hub, and Service Hub implementation
• Inbound marketing and content production
• RevOps consulting and CRM implementation
• Paid media coordinated with HubSpot
• Lifecycle marketing and email programs

Pros:

• HubSpot Elite tier with broad certified-specialist bench
• Combined HubSpot, RevOps, and content under one team
• Named enterprise HubSpot cases across sectors

Cons:

• Serves B2B, ecommerce, and B2C rather than exclusively B2B companies with complex sales cycles.
• Pricing is not published; buyers need a scoped quote.

Named proof: SmartBug publishes B2B HubSpot cases covering inbound program builds, RevOps migrations, and lifecycle rebuilds.

Pricing: Custom pricing; scope-specific quotes.

7. New Breed

New Breed is a HubSpot Diamond Solutions Partner focused on B2B software companies. The practice spans HubSpot implementation, lifecycle marketing, RevOps, and demand generation, with an emphasis on connecting HubSpot output to pipeline reporting.

Best for: A B2B software team running HubSpot wanting a Diamond partner with lifecycle and RevOps depth.

Key Features:

• HubSpot Marketing Hub, Sales Hub, and CMS Hub implementation
• Lifecycle marketing and lead scoring
• RevOps and pipeline reporting design
• Demand generation programs
• HubSpot audits and optimization

Pros:

• HubSpot Diamond tier with named B2B SaaS reference base
• RevOps and lifecycle depth alongside implementation
• Named cases connecting HubSpot output to pipeline outcomes

Cons:

• HubSpot-only platform coverage; buyers on Pardot, Marketo, or Eloqua should plan for a different partner.
• Pricing is not published; buyers need a scoped quote.

Named proof: New Breed publishes B2B SaaS HubSpot cases covering lifecycle rebuilds, RevOps redesigns, and demand-generation programs.

Pricing: Custom pricing; scope-specific quotes.

8. Blueleadz

Blueleadz is a HubSpot Solutions Partner primarily working with smaller B2B teams on inbound marketing, lifecycle content, and HubSpot administration. The practice emphasizes inbound content production alongside HubSpot workflow setup.

Best for: A smaller B2B team running HubSpot wanting an inbound and automation partner with lifecycle content production.

Key Features:

• HubSpot implementation and admin
• Inbound content production
• Lifecycle email and nurture workflows
• Lead scoring and CRM cleanup
• Sales enablement inside HubSpot

Pros:

• HubSpot Solutions Partner with named inbound content programs
• Lifecycle content production tied to HubSpot workflows
• Smaller-team focus with senior operator involvement

Cons:

• HubSpot-only platform coverage and primarily inbound-content oriented; buyers wanting deep paid-media integration or multi-platform coverage should confirm scope.
• Pricing is not published; buyers need a scoped quote.

Named proof: Blueleadz publishes B2B HubSpot and inbound cases covering lifecycle content, lead-scoring builds, and sales-enablement programs.

Pricing: Custom pricing; scope-specific quotes.

9. Ledgeview Partners

Ledgeview Partners is a Salesforce-native consulting firm delivering Pardot (Account Engagement) and Salesforce Marketing Cloud implementations alongside broader Salesforce CRM work. Engagements typically span both the CRM and the marketing automation platform.

Best for: A B2B team running Pardot (Account Engagement) or Salesforce Marketing Cloud wanting a Salesforce-native consulting partner.

Key Features:

• Pardot (Account Engagement) implementation and optimization
• Salesforce Marketing Cloud implementation
• Salesforce CRM administration
• Sales and marketing alignment inside Salesforce
• Reporting and dashboarding

Pros:

• Salesforce-native depth across CRM and marketing automation
• Combined Pardot and Salesforce Marketing Cloud coverage
• Named B2B Salesforce and Pardot cases

Cons:

• Consulting-first model with CRM administration as primary scope; buyers wanting ongoing demand execution beyond CRM and platform admin should confirm scope.
• Pricing is not published; buyers need a scoped quote.

Named proof: Ledgeview publishes B2B Salesforce and Pardot cases covering CRM implementations, Pardot builds, and Salesforce Marketing Cloud engagements.

Pricing: Custom pricing; scope-specific quotes.

10. Kalungi

Kalungi is a fractional-CMO agency built for early to mid-stage B2B SaaS teams, running HubSpot as the primary marketing automation platform. Engagements pair a fractional CMO with a small execution pod covering demand generation, content, and HubSpot administration.

Best for: An early to mid-stage B2B SaaS team running HubSpot wanting a fractional CMO-led team.

Key Features:

• Fractional CMO leadership
• HubSpot administration and workflow build-out
• Demand-generation and content production
• SEO and paid media at limited scale
• B2B SaaS playbooks and benchmarks

Pros:

• Fractional CMO plus execution pod under one engagement
• HubSpot depth tied to a B2B SaaS operating playbook
• Named B2B SaaS cases across pre-Series B and early-scale companies

Cons:

• Built around a fractional-CMO delivery model for earlier-stage B2B SaaS; enterprise or complex-cycle programs may need a different fit.
• Entry engagement runs materially higher than most integrated agency retainers.

Named proof: Kalungi publishes B2B SaaS cases across pre-Series B and early-scale accounts covering demand-generation ramps, HubSpot builds, and content programs.

Pricing: From roughly $18,000 per month for the fractional-CMO engagement.

Choosing the Right B2B Marketing Automation Agency

Choose Powered by Search when a lean B2B marketing team wants a strategic, proactive, self-driving partner running HubSpot or Salesforce automation inside a wider integrated demand and pipeline stack. Bought as sales-qualified pipeline, not as workflow diagrams or lifecycle audits. Choose a platform specialist when the platform is the entire problem and your team already owns paid media, content, and pipeline reporting.

Before signing any marketing automation agency, verify seven things:

1. Which platforms the agency actively delivers on today (HubSpot, Pardot / Account Engagement, Marketo, Eloqua, ActiveCampaign B2B) and the certified-specialist count on each.

2. Whether the standard engagement is ongoing optimization tied to pipeline outcomes or a fixed-scope implementation project that ends at go-live.

3. How closed-loop attribution flows from campaign source to opportunity stage and closed-won revenue in your CRM.

4. Whether lifecycle, scoring, and list hygiene are inside the standard scope or priced as separate engagements.

5. Who owns the platform license, the CRM, and the data on offboarding.

6. Whether paid media, SEO, content, and landing pages are inside the same pod or scoped to a second partner.

7. Client-facing roles, minimum term, exit terms, and access to raw platform and CRM data.

Bring your platform, sales-cycle length, CRM stages, current lifecycle model, and qualified-pipeline target to the first conversation. If HubSpot is the primary platform, review the best B2B HubSpot agencies. If Salesforce is the primary platform, review the best B2B Salesforce agencies. If the broader account program is the problem, review the best ABM agencies.

Start the Powered by Search fit assessment with your platform, CRM stages, sales cycle, pipeline target, and current lifecycle model. The first conversation does not require platform access.

Related comparisons

• 10 Best B2B HubSpot Agencies for 2026. For buyers whose primary platform is HubSpot Marketing Hub.

• 10 Best B2B Salesforce Agencies for 2026. For buyers whose primary platform is Salesforce (Pardot / Account Engagement or Marketing Cloud).

• 10 Best ABM Agencies for B2B in 2026. For buyers whose primary need is account-based orchestration alongside automation.