B2B Marketing Agency Spain
11 B2B marketing agencies in Spain, every one checked on its own website rather than lifted from a directory.
This guide is written for someone buying in English — so it says plainly which agencies actually operate in English, and which have an English page over a business that does not.
How B2B marketing is bought in Spain
Two laws apply simultaneously and LSSI wins: GDPR/LOPDGDD governs whether you may process the data, but Ley 34/2002 (LSSI-CE) Article 21 governs whether you may send the commercial email, and you must satisfy both.
GDPR relief does not rescue you — the AEPD states the arrival of the GDPR is irrelevant to this question, so even a perfectly documented legitimate-interest balancing test buys you nothing at the point of send.
There is no B2B carve-out: LSSI Art. 21 restricts commercial communications to destinatarios without distinguishing natural from legal persons, so a UK marketer relying on PECR's corporate-subscriber exemption is non-compliant on day one.
Enforcement is routine rather than headline-grabbing — publicly reported cases include €5,000 for sending advertising without recipient consent (EXP202312711) — which is what makes it a real operational risk.
Madrid is corporate, enterprise-IT, telco and public-affairs and is where the go-to-market and RevOps consultancies cluster; Barcelona is startup, product and e-commerce with the strongest MarTech and inbound heritage; but the genuine industrial B2B capability is in neither — it is in Valencia and the northern industrial belt.
No Spanish agency in this set publishes a rate card, company registration numbers are much harder to source than in Italy (only Cyberclick publishes a CIF), and BBN International lists no Spanish partner agency.
The trade body is ACT — Asociación de Agencias de Creatividad Transformadora (founded 1977 as AEACP, refounded as ACT 2019-2021), which is the closest thing to an independent register of who is real.
An English page is not an English agency
Spain has a large, capable agency sector that is overwhelmingly domestic-facing and Spanish-language — only Gotoclient and Reux Digital are genuinely English-first, with Cyberclick and The Marketing Hub as full bilinguals. Watch for fake bilingualism: GO2JUMP's /en URL exists but serves the Spanish page, and several agencies doing real international work (Sakudarte, The Revenue) publish no English at all.
This matters more than any ranking. An agency whose canonical site sits in the local language with an /en/ stub bolted on will usually deliver in that language too — fine if you have a local team, expensive if you do not.
Of the 11 agencies here, 2 are genuinely English-first. Filter on it below.
11 B2B marketing agencies in Spain
Not a ranking. Every one was verified on its own website, and where an agency publishes nothing — no clients, no fees, no team size — the card says so rather than filling the gap.
Filter by what you need, where they are, and whether they work in English.
B2B email in Spain
The UK carves business recipients out of its direct-marketing rules. Most of Europe does not, and assuming otherwise is the most expensive mistake a foreign buyer makes here.
The regulator is Agencia Española de Protección de Datos.
Ask any agency to explain its lawful basis before you sign. If they cannot, that is your answer.
What it costs, and why almost nobody will tell you
Of the 11 agencies verified for this page, none publishes a rate card.
That is not evasiveness so much as convention — European B2B agencies scope per engagement and quote privately. But it does mean any price range you find online for this market is somebody's estimate, not a published rate.
So rather than invent a range, this page does not give one. What that silence is worth knowing about is set out below.
The brief
Approaching agencies in a market you do not operate in makes a comparable brief more important, not less.
Answer five questions and every agency is quoting for the same thing.
Then take it to the list above, or to the eleven UK agencies if you are comparing across markets.
All 11 agencies in full
Ordered alphabetically, not ranked.
Connext
Valencia (Xirivella) · Local language only
A genuine industrial and manufacturing focus with over seven years as an official HubSpot partner, claiming to be the first B2B agency in Spain.
Disciplines: Demand gen · MarTech · Content
Clients they name: none published on their own site
Fees: not published
Credentials: HubSpot Certified Partner
Spanish-only site, no extractable client names, and their aviso legal relies on legitimate interest for lead communications — an aggressive reading given LSSI Art. 21. HubSpot Platinum listing is third-party and unverified
Cyberclick
Barcelona · Fully bilingual
The strongest verifiable MarTech credential in Spain and the only agency in the set publishing a full company registration and registry entry.
Disciplines: Demand gen · Content · Paid media · MarTech
Clients they name: TeamSystem Spain, Horizons Optical
Fees: not published
Credentials: HubSpot Elite Partner — the first HubSpot partner agency in Spain, partner since 2012 · HubSpot Onboarding Accredited · HubSpot Data Migration Accredited
Registration: CYBERCLICK AGENT, S.L., CIF B-62084959; Registro Mercantil de Barcelona, Tomo 32.063, Folio 52, Hoja B-201.583
Ownership change: now stated to be "part of Siloy" on their own site header
GO2JUMP
Barcelona · Local language first
Publishes a genuine industrial B2B content asset ("Mega Guía de Marketing Industrial") and has SEIDOR, a serious Spanish IT group, as a named reference.
Disciplines: Demand gen · Paid media · Content
Clients they name: SEIDOR, ASZENDE, EIKONOS, The Project
Fees: not published
Credentials: HubSpot Certified Partner Agency · Google Partner · LinkedIn Partner
Fake bilingualism: the /en URL exists but returns the Spanish page. Their own site also carries a warning banner about identity impersonation of GO2JUMP
Gotoclient
Barcelona · English-first
The most internationally-oriented pure-B2B agency in Spain, and channel and partner marketing is a real specialism that is rare in the market.
Disciplines: Demand gen · ABM · Paid media · Content
Clients they name: none published on their own site
Fees: not published
Named clients could not be extracted from the testimonials page — verify before publishing. Small team (LinkedIn 2-10, unverified); awards page not read
IOMarketing
Madrid · 6+ named individuals staff · Local language only
Sells a 360º outsourced marketing department for SMEs — real and trading, but an SME generalist with no B2B industrial specialism.
Disciplines: Paid media · Content
Clients they name: none published on their own site
Fees: not published
Credentials: HubSpot Partner (tier not stated) · Cookiebot Partner
Database URL correction: the record pointed at a Sortlist profile; the real domain is iomarketing.es. Weakest fit in the Spanish set — Spanish-only, no named clients, and their own aviso legal 404s
mbudo
Madrid · est. 2017 · Fully bilingual
Fully trilingual in English, Spanish and Portuguese with a Lisbon office, focused on HubSpot implementation for complex sales processes and CRM/BI integrations.
Disciplines: MarTech · Demand gen
Clients they name: none published on their own site
Fees: not published
Credentials: HubSpot Diamond Partner — reached Diamond in four years
No named clients and no sectors stated on their own site
Reux Digital
Madrid · est. 2020 · English-first
The purest SaaS positioning in Spain with a London and Madrid dual presence, but it is explicitly a consultancy rather than a delivery agency.
Disciplines: Brand & creative · PR & analyst · Demand gen
Clients they name: none published on their own site
Fees: not published
Database correction: founded in London in 2020; the Madrid headquarters opened in 2023. No named clients or credentials published
Sakudarte
Valencia · Local language only
The most convincingly industrial client list in Spain, selling a proprietary "Sistema de Marketing B2B" with the option to run activation or train your team to run it.
Disciplines: Brand & creative · Content · Demand gen · MarTech
Clients they name: Renold, Smartlog Group, SGS Productivity, Julián Soler, Ecrimesa, Textil Olius
Fees: not published
Registration: SAKUDARTE, S.L. (legal name confirmed in own cookie notice; CIF not found)
Third-party listicles call Sakudarte a Basque agency — their own site gives a Valencia address. No English site despite explicitly international work
The Marketing Hub
Madrid · Fully bilingual
The only Spanish agency in the set with a verifiable trade-body membership, doing genuine industrial B2B work and recruiting in English and German.
Disciplines: Brand & creative · Demand gen · Paid media
Clients they name: none published on their own site
Fees: not published
Credentials: Member of MKT — Asociación de Marketing de España
Claims "the know-how of BBN" on its own homepage, but BBN International's own locations page does not list Spain — do not repeat the BBN claim as a credential. Logo walls not extractable, so no named clients
The Revenue
Madrid · Local language only
A B2B go-to-market and RevOps consultancy that explicitly positions Spain as a springboard into Europe and LatAm, serving clients in Spain, Europe and Mexico.
Disciplines: MarTech · Demand gen · ABM · Brand & creative
Clients they name: none published on their own site
Fees: not published
Real but thin: no team, no named clients (testimonials attributed by city only), no registration, and a Spanish-only site despite an international client base
Ulled Asociados
Barcelona · est. 1964 · ~30+ named individuals staff · Fully bilingual
Sixty years old with a complete English site and a Lisbon office, but it sells perception management, public affairs and crisis communications — brief it for Spanish reputation, not for pipeline.
Disciplines: PR & analyst · Brand & creative
Clients they name: none published on their own site
Fees: not published
Category: a corporate PR and reputation consultancy, not a B2B demand-generation agency. The "27 international awards in 2021" claim appears on Instagram, not their own site. Clients section did not extract
B2B marketing in Spain — FAQ
How this page was built
Every agency was verified on its own website in July 2026 — not from Clutch, Sortlist, GoodFirms or any other directory.
Where an agency's own site does not publish a founding year, a team size, a client name or a fee, this page says "not published" rather than sourcing it from somewhere less reliable.
The regulator position is cited to Agencia Española de Protección de Datos, and the trade body to ACT — Asociación de Agencias de Creatividad Transformadora (founded 1977 as AEACP, refounded as ACT 2019-2021).
What is deliberately absent. No price range for this market, because only 0 of 11 agencies publish one and the rest would be guesswork. No ranking, because there is no comparable data on which to rank. And no agency that we could only find on a directory — if a firm has no site of its own that we could read, it is not on this page.
Buying across several markets? The UK guide is the deepest one we publish.