ProspectLab21

We are a B2B cold email agency that operates the full channel for our clients: we count the addressable market company by company, build the prospect list, set up and warm dedicated domains and inboxes (never the client's main domain), write a personalised sequence with a specific data point for each company, launch the campaign, monitor deliverability daily, classify every reply, and draft the client's response to each interested lead. The client writes no copy and touches no infrastructure. We work with B2B companies whose buyer lives in email, where one person makes the buying decision and where the lifetime value of a single client is at least ten thousand dollars. Good fits include agencies, software companies, recruiting firms, consultancies, laboratories, engineering firms, and professional services. We serve companies based in Mexico, Spain, Chile, Colombia, and the rest of Spanish-speaking LATAM. We are based in Guadalajara, Mexico, and operate across Mexico, Spain, and LATAM. All campaigns are planned, reviewed, and managed by our founder, Gael Sosa, who personally decides what is said to each company and reviews every batch before it goes out. Our pricing is a one-time setup fee of 450 plus 550 per month with no minimum commitment. We charge the second month only after two interested decision-makers have replied, and if that does not happen within 90 days of the first send, the agreement ends with no further payment. Domains and the prospect list stay with the client regardless of outcome. We track 6,763 people contacted and 298 replies as measured in Smartlead on 21 September 2026, with roughly one in five replies coming from an interested prospect.