Top 10 Best Cold Email Agencies in Spain

SalesCaptain is an outbound and go-to-market agency built for B2B companies that want to reach buyers at the right moment. Their edge is using data to trigger outreach when real signals appear, not from static lists.

Their system runs three layers at once: AI-insight campaigns for unaware accounts, intent-signal campaigns for prospects showing demand, and reactivation for warm-but-unsold accounts. It leans heavily on buyer intent data.

What separates SalesCaptain from other cold email agencies is how they match message, timing, and offer to each buyer stage. They run outbound like performance marketing: test fast, scale what works, cut what does not.

The result is steady pipeline regardless of market size or saturation. SalesCaptain performs best where innovation matters, which is why B2B SaaS companies tend to be the strongest fit.

omnieGTM is a managed outbound provider that treats cold email as one connected system rather than scattered parts. They pair dedicated strategists with AI personalization and enterprise-grade deliverability for B2B senders.

Their engine covers ICP development, lead enrichment, and custom domains. It also builds warmed inboxes and full campaigns as one done-for-you program, so replies land in primary inboxes instead of spam.

What stood out to me is how they keep deliverability, copy, and data under one roof. That single-owner setup is where most fragmented cold email programs quietly break down and repeat common cold outreach mistakes.

omnieGTM fits B2B and retail-focused teams that want predictable pipeline without managing the stack themselves. If deliverability keeps you up at night, their infrastructure focus is the draw.

Cunvert Copy builds and runs B2B cold email systems focused on one thing: interested replies. It is copy-led, which is rare in a market obsessed with volume.

The team leans on a reply-rate approach that blends strategy, data, and buyer psychology. Rather than blasting templates, each message is written to land with a specific reader.

I like that they will handle setup, messaging, and testing. Or they can slot in alongside your existing team. That flexibility suits founders who want cold email done properly without a big retainer.

Cunvert Copy is a strong fit when your offer is solid but your outreach copy is not converting. If reply rates are the bottleneck, this is the specialist to call.

Gotoclient is a Barcelona B2B agency with more than 15 years behind it and a small senior team. They describe the problem plainly: B2B sales and marketing are getting harder, so you have to adapt.

Their core strength is LinkedIn. They run full-funnel LinkedIn Ads, sales outreach sequences, and LinkedIn-native ABM alongside inbound funnels and demand generation.

For pure cold email at scale, Gotoclient leans more toward LinkedIn and ABM than high-volume sending. I would use them when your buyers live on LinkedIn and account-based multi-channel outreach matters most.

The honest framing is senior and boutique, without the overhead of a large agency. That makes them a solid partner for Spanish and international B2B targeting.

Smart Team works with industrial and B2B companies across Barcelona and Madrid. They connect lead generation, automation, and sales strategy rather than running one-off campaigns.

Their pitch is being more than an agency, closer to your outsourced digital team. That model suits companies that want marketing and sales to actually line up.

Independent reviewers rate Smart Team among the strongest outbound-first options inside Spain. Automation and process are clearly their comfort zone, which pairs well with a real outbound sales strategy.

I would pick them when you need outbound tied to CRM and marketing automation, not just a list of sent emails.

Reux Digital is a marketing consultancy for B2B and B2B SaaS companies. They fold sales development and opportunity generation into a wider growth strategy.

Their work spans go-to-market planning, demand generation, and marketing automation. Cold email sits inside that mix rather than as a standalone service.

For SaaS founders, the appeal is strategic. They shape the motion first, then build the outbound that supports it.

I would choose Reux when you want a partner to design the whole go-to-market, not only send cold emails.

Arimetrics is a Madrid digital strategy agency with 400+ clients and 15 years behind it. They lead with data, analytics, and AI-driven marketing.

Their focus is turning spend into sales through constant optimization and conversion work. Lead generation is framed around measurable revenue, not vanity metrics.

This is a broader digital shop rather than a cold email specialist. I would use them when data and paid demand sit at the center of your plan.

For Spanish companies that want AI-driven demand plus conversion discipline, Arimetrics is a credible pick.

Inprofit is a MarTech agency based in Valencia and Alicante, working across Spain, Portugal, and Latin America. They blend marketing, technology, and automation.

Their angle is martech and marketing automation that turns into results. That makes them useful for teams building repeatable lead generation engines.

Cold email is one channel inside a wider automation stack here. I would lean on them when tooling and process are the priority.

For companies scaling into Iberian and LATAM markets, their regional reach is a genuine plus.

Novicell is a Barcelona digital agency focused on B2B growth for industrial companies. They combine B2B strategy, reliable technology, and lead generation.

Their case studies point to measurable results and stronger conversion into customers. The industrial focus is clear and consistent.

This is digital transformation and B2B growth rather than pure cold outreach. I would use them when industry context and web experience matter.

For industrial B2B brands in Spain, Novicell brings sector knowledge that most generalists lack.

ALYS Marketing is a Barcelona industrial B2B agency with more than 25 years of experience. They know industrial channels, prescribers, and buying processes well.

Their promise is quality lead traffic built on effective marketing and communication. Email, inbound, and B2B campaigns all feed that goal.

ALYS is a marketing-led agency, not a high-volume cold email shop. I would pick them when your market is industrial and niche.

For manufacturers and technical sectors in Spain, their long track record is reassuring.