New York has one of the densest concentrations of B2B buyers in the country: financial services, fintech, media and adtech, professional services and a large SaaS community. That density cuts both ways. Your prospects are close and reachable, but they are also some of the most heavily prospected executives in the US, and they ignore generic outreach.
This list is for founders, CROs and marketing leaders comparing B2B lead generation partners with a real New York City presence. It covers three different models: brand-to-demand agencies, outsourced sales development and appointment setting firms, and a search specialist for inbound demand. Pick the model first, then the firm.
Disclosure: this list is published by Lemniscate Growth, which is included.
Last checked: September 2026.
How we chose
We reviewed each firm's own website in September 2026. No firm paid to be included, and inclusion is based on public information on each firm's own website. We did not use ratings, review counts, awards or client names as criteria, and we do not repeat them here. We dropped several firms we checked because their sites showed an acquisition or merger notice, or because their only New York-area office was outside the five boroughs.
- Operating website with 2025-2026 activity: a current copyright line, dated posts or recent updates.
- Stated New York City presence: a headquarters, main office or office address in the city on the firm's own site. Where the headquarters is elsewhere, we say so.
- B2B lead generation service lines: outbound, SDR teams, appointment setting, ABM, content syndication, demand programs or search-led inbound.
- Specific process: named services and steps clear enough to question on a first call.
- A mix of models: so buyers can compare brand-to-demand, SDR and inbound approaches side by side.
1. Lemniscate Growth
Lemniscate Growth is a B2B revenue pipeline generation agency. It is not headquartered in New York: it is registered in the US and Dubai, has a delivery team in Hyderabad, and serves New York clients remotely. Its work runs across the funnel, from GTM and funnel build to AEO, GEO and SEO, CXO branding, events, ABM, LinkedIn, outbound, webinars, appointment setting and CRO. Lemniscate reports up to $10M in pipeline per client, about $2.4M in average sales closed per client account per year, and 35+ active clients.
Best for: B2B technology and services companies that want outbound, ABM and inbound run as one pipeline program instead of three separate vendors.
Services: B2B lead generation, appointment setting, ABM, LinkedIn and outbound, AEO/GEO/SEO, CXO branding, events and webinars, CRO.
Why it made the list: Its case studies report outcomes at the pipeline level, including $12M in pipeline in 28 months for a supply chain company and 54 leads at $250K-$300K ticket sizes for a healthcare IT services firm.
Website: lemniscategrowth.com
2. Stein
Stein (its legal footer reads Stein IAS) describes itself as a Brand-to-Demand Experience, or BDX, agency for B2B marketers. Its contact page gives a New York address on West 23rd Street and lists global strategic hubs in New York, London, Manchester, Amsterdam, Singapore and Shanghai. The services page says it supports clients focused on awareness and consideration as well as those focused on mid and lower funnel pipeline and revenue. The site carries a 2025 copyright.
Best for: Larger B2B companies that want brand, ABM and demand programs planned and produced by one agency across regions.
Services: Market and audience research, TAM analysis, brand positioning and messaging, demand and GTM strategy, ABM/X, creative and content, media planning and buying, social and search, earned media, marketing technology and automation, website development.
Why it made the list: A New York hub with a street address on its own site, and a service model that explicitly connects brand work to pipeline instead of treating them as separate engagements.
Website: steinb2b.com
3. Transmission
Transmission is a full-service B2B agency. Its contact page lists a New York office on West 26th Street alongside offices in London, San Francisco, Dallas, Sydney, Singapore, Delhi and Wroclaw, and its footer names a company registered in England. Services run from growth consulting and GTM audits to ABX programs, paid media, content, digital experiences and a demand conversion practice that covers pipeline generation, nurture strategies and sales activation. Its post sitemap shows content updates through August 2026.
Best for: B2B technology companies that want account-based programs and demand conversion tied to a GTM plan across the US and international markets.
Services: Growth consulting, GTM audit and architecture, brand strategy, audience and customer journey strategy, ABX, paid media, creative, content, digital experiences and optimization, data insights, demand conversion.
Why it made the list: A verified New York office, with ABX and demand conversion listed as named services rather than add-ons to creative work.
Website: transmissionagency.com
4. S2W Media
S2W Media is a B2B demand generation company whose contact page lists a New York City office on Avenue of the Americas, plus offices in London, Belfast and Pune. Its programs combine content syndication across curated networks, programmatic lead generation and display, and intent-based lead qualification. It also offers SDR-as-a-Service, which it says is delivered by dedicated, in-house, UK-based teams. The site carries a 2026 copyright and recent posts on ABM and content syndication.
Best for: B2B marketing teams that need content syndication and intent-based lead volume, with the option of SDR follow-up.
Services: Content syndication, programmatic lead generation, programmatic display, intent-based qualification, SDR-as-a-Service, programs for sales, agency and channel partner teams.
Why it made the list: A stated NYC office, and a rare combination of syndication, programmatic and SDR follow-up under one roof.
Website: s2wmedia.com
5. Inside Sales Solutions
Inside Sales Solutions provides outsourced sales development for B2B technology companies. Its contact page lists corporate headquarters in St. Petersburg, Florida, a New York office on West 39th Street and a remote London team. Services include appointment setting, lead qualification, dedicated SDRs, sales data management, event support and marketing services, with separate solutions for sales, marketing and channel teams. Its blog has posts dated July 2026, including one on phone-led lead generation for cybersecurity sales.
Best for: B2B tech vendors, including security and networking companies, that want SDRs familiar with technical sales who can also support events and channel programs.
Services: Appointment setting, lead qualification, dedicated SDR teams, sales data management, event support, marketing services, programs for channel teams.
Why it made the list: A New York office on its own contact page, a clear B2B tech focus, and event and channel support that many SDR firms do not offer.
Website: isaless.com
6. SalesGent
SalesGent is a B2B lead generation agency that lists its locations as New York City, Paris and Singapore. It runs outbound through dedicated SDRs across cold email and LinkedIn, using intent signals and AI to personalize messages. Its process has four steps: build a list of ideal customers, contact them, qualify and book meetings, then hand over for your team to close. The commercial model is performance based, with clients paying per held qualified meeting. Its blog carries 2026 posts.
Best for: Startups and growth-stage B2B companies that want outbound meetings on a performance-based model, including campaigns outside the US.
Services: ICP list building, cold email outreach, LinkedIn outreach, prospect qualification, meeting booking, dedicated SDRs.
Why it made the list: New York City listed first among its locations, a narrow focus on held meetings, and a model that shifts some no-show risk to the agency.
Website: salesgent.co
7. Appointment Setter Online
Appointment Setter Online is a sales support firm focused on filling calendars with qualified sales meetings. Its contact page lists a business address in the Bronx, New York. Services include outbound and inbound appointment setting, lead generation, cold calling, email outreach campaigns, omnichannel outreach that extends to SMS and WhatsApp, dedicated SDR teams and sales closers. The site carries a 2026 copyright.
Best for: Smaller sales teams that want phone-heavy appointment setting and inbound lead follow-up without hiring in-house.
Services: Outbound appointment setting, inbound appointment setting, lead generation, cold calling, email and SMS outreach, dedicated SDR teams, sales closers.
Why it made the list: A New York City address on its own site, and both outbound and inbound appointment setting, which suits teams whose inbound leads go unanswered.
Website: appointmentsetteronline.com
8. Sure Oak
Sure Oak is an SEO and AI search agency. Its contact page says its main office is in New York City, on Sands Street in Brooklyn. Services cover SEO strategy, technical and enterprise SEO, link building, digital PR, content marketing and AI search optimization aimed at visibility in ChatGPT, Perplexity and Google AI Overviews. Industry pages include financial services, insurance, SaaS and education, and its case studies are grouped into categories that include SaaS and B2B. The site carries a 2026 copyright.
Best for: B2B SaaS and financial services companies that want inbound demand from search and AI answers to complement outbound.
Services: SEO strategy, technical SEO, enterprise SEO, AI search optimization (AEO/GEO), link building, digital PR, content marketing.
Why it made the list: A New York main office and a focus on inbound search demand, which balances the outbound-heavy firms on this list.
Website: sureoak.com
Comparison table
| Agency | Best for | Headquarters | Core services | Website |
|---|---|---|---|---|
| Lemniscate Growth | Full-funnel B2B pipeline programs | Registered in US and Dubai, team in Hyderabad (serves NYC remotely) | Outbound, ABM, LinkedIn, appointment setting, AEO/GEO/SEO, events | lemniscategrowth.com |
| Stein | Brand-to-demand programs for larger B2B companies | New York hub (also London, Manchester, Amsterdam, Singapore, Shanghai) | Strategy, ABM/X, creative, media, marketing technology | steinb2b.com |
| Transmission | ABX and demand conversion for B2B tech | New York office (also London, San Francisco, Dallas, Sydney, Singapore, Delhi, Wroclaw) | GTM consulting, ABX, paid media, content, demand conversion | transmissionagency.com |
| S2W Media | Content syndication plus SDR follow-up | New York City office (also London, Belfast, Pune) | Content syndication, programmatic, intent qualification, SDR-as-a-Service | s2wmedia.com |
| Inside Sales Solutions | SDRs for B2B tech, events and channel | St. Petersburg, FL (New York office) | Appointment setting, lead qualification, dedicated SDRs, event support | isaless.com |
| SalesGent | Performance-based outbound meetings | New York City (also Paris, Singapore) | Cold email, LinkedIn outreach, qualification, meeting booking | salesgent.co |
| Appointment Setter Online | Phone-heavy appointment setting for small teams | Bronx, NY | Outbound and inbound appointment setting, cold calling, SDR teams | appointmentsetteronline.com |
| Sure Oak | Inbound demand from search and AI answers | Brooklyn, NY (main office) | SEO, AI search optimization, link building, digital PR, content | sureoak.com |
How to choose a B2B lead generation agency in New York
Decide which model you are buying
Brand-to-demand agencies build positioning, creative and multichannel programs. SDR and appointment setting firms put people on phones, email and LinkedIn to book meetings. Search specialists build inbound demand that compounds slowly. Confusing these models is one of the most common reasons engagements disappoint.
Define a qualified meeting in writing
Agree on title, company size, industry, geography and what the prospect must confirm, such as a real problem, a timeline or buying authority. Settle how no-shows, reschedules and meetings with accounts already in your pipeline are counted before the first invoice, especially under pay-per-meeting models.
Check who does the work and where
Several firms here run SDR or delivery teams outside New York; S2W Media, for example, says its SDR teams are UK-based. That can work well, but ask about coverage during Eastern time business hours, how reps are trained on your product and how many clients each rep handles.
Protect your domains and data
Ask whether cold email runs on secondary domains, how SPF, DKIM and DMARC are configured, and how the firm stays within Google and Yahoo bulk sender requirements. Confirm where contact data comes from, how opt-outs are handled, and who owns lists, sequences and call recordings when the contract ends.
Plan for regulated buyers
A large share of New York B2B selling touches banks, broker-dealers, investment advisers and insurers. On either side of that relationship, outreach copy and content often need compliance review. Build that review into timelines and ask the agency how it works from approved language.
Use local presence where it pays
New York hosts a steady calendar of industry conferences and executive dinners, and many prospects are a short trip away. An agency that turns outbound conversations into in-person meetings around those events adds real value. Otherwise, treat a New York office as a tiebreaker.
Tie reporting to pipeline, not activity
Emails sent and connection requests accepted are inputs. Ask for meetings held, opportunities created, pipeline value and win rate by source, pulled from your CRM rather than from the agency's own dashboard.
Questions to ask on the first call
- What counts as a qualified meeting in your contract, and how are no-shows handled?
- Who will run our campaigns day to day, where are they based, and how many other clients do they support?
- Which channels will you use in the first 90 days, and why that mix for our buyers?
- How do you protect our primary domain and sender reputation?
- Where does your contact data come from, and how do you process opt-outs and privacy requests?
- Can you walk us through a campaign for a company with a similar deal size and buying committee?
- What will weekly and monthly reports include, and will the numbers come from our CRM?
- What do you need from our sales team, and what happens if our reps are slow to follow up?
- Who owns the lists, copy, sequences and recordings if we end the engagement?
Red flags
- Guaranteed meeting or lead numbers before the firm has looked at your ICP, offer and deal size.
- Cold email from your primary domain with no warm-up or authentication plan.
- Vague data sourcing, or lists that cannot be traced to a provider or research process.
- Syndicated leads counted as pipeline with no nurture or qualification step in between.
- Reporting that stops at opens, replies or MQLs, with no link to opportunities.
- Long lock-in contracts with no performance review checkpoints.
- Case studies the account team cannot explain in terms of buyer, channel and outcome.
Next step
Before you brief anyone, write one page covering your ICP, the meeting definition you would pay for and your sales team's capacity to follow up. That page will tell you whether you need an SDR partner, a brand-to-demand agency, inbound search work or a mix.
If you want an outside view first, Lemniscate offers a free audit you can use as a starting point, whether or not you work with us.
