B2B Lead Generation Company: What You Get, and How an AI Agent Does the Same Job
By the Yirlo team · Product details checked against the app
Firms in this category identify companies likely to buy from you, reach the right contacts inside them, and pass your sales team either replies or meetings on the calendar. They usually charge a monthly retainer, and the work can be as narrow as building lists or as broad as running outbound and setting appointments. Yirlo, an AI outbound agent, takes over the email portion at about $0.05 for each email, and nothing locks you in. Below you will find what agencies deliver, typical pricing, ways to vet one, and the situations where the agent suits you better.
What a B2B lead generation company does for you
Under the sales language, the work is a repeatable outbound process. Someone decides who your buyers are, builds a list of companies and contacts, writes messages, sends them from a set of mailboxes or accounts, handles replies, and passes on the people who show interest.
Agencies package this as a done-for-you service. You supply a description of your offer and ideal customer, and a team of researchers, copywriters and sales development reps runs the process. Some firms add paid ads, content or events, but the bulk of the market sells outbound email, social messaging and cold calling.
The output is usually one of three things: raw leads (contact details that match your criteria), marketing qualified leads (people who responded and showed some interest), or sales appointments (a call on your calendar). Which one you buy changes the price and the amount of work left for your own team.
What you get, deliverable by deliverable
Proposals from different agencies look alike. The table shows what each line item means in practice, so you can compare quotes on the same basis.
| Deliverable | What it looks like in practice |
|---|---|
| Ideal customer definition | A written profile of industries, company sizes, titles and triggers, often built in a kickoff call |
| Prospect list | Companies and named contacts with verified emails, sometimes phone numbers and social profiles |
| Messaging | A sequence of 3 to 5 emails or messages, with a few angles to test |
| Sending infrastructure | Purchased domains, warmed mailboxes and a sending tool, managed by the agency |
| Reply handling | A rep reads responses, sorts interest from noise and answers questions |
| Appointment setting | Qualified prospects booked onto your calendar, sometimes with a short briefing |
| Reporting | A weekly or monthly summary of sends, replies and meetings, often with a call |
The main types of B2B lead generation services
Appointment-setting agencies sell meetings. Callbox, Belkins, CIENCE and similar firms sit here, and they typically combine email, social messaging and phone. Expect a dedicated account manager and a minimum term of several months.
Specialist channel agencies focus on one method, such as LinkedIn lead generation or cold email only. They tend to be cheaper and narrower, and they publish a simple promise like a set number of leads per week.
Pay per lead companies charge for each lead delivered. The appeal is that you only pay for output. The catch is the definition of a lead, which can mean anything from a form fill to a confirmed buyer, so the contract wording matters more than the price.
Data and software platforms such as ZoomInfo, Apollo and Cognism sell the database and sometimes sequencing tools, while your team does the outreach. Comparison articles often list them next to agencies, yet they are a different purchase. You pay for access to data and tools, and the results depend on your own people.
Outsourcing a full SDR function is the most expensive option. The vendor supplies reps who work inside your tools and brand. It suits companies with a proven playbook that need more hands.
What B2B lead generation costs
Pricing varies by channel, market and how much human labor is involved, so treat any figure below as an example rather than a quote. A managed outbound agency might charge, for example, $4,000 to $10,000 per month with a three to six month commitment. A pay per lead provider might charge, for example, $100 to $400 per lead depending on how strictly a lead is defined. A single-channel service might sit lower, for example $1,500 to $3,000 per month.
Divide the monthly fee by the meetings you can realistically expect. If an agency charges $6,000 per month and books 8 qualified meetings, that is $750 per meeting before any sales work. If your close rate is 20% and an average deal is worth $9,000, those 8 meetings produce about 1.6 deals and $14,400 in revenue, which clears the fee. The same math with 3 meetings does not. These are example numbers, so replace them with your own.
Watch for costs outside the retainer: setup fees, list purchase charges, minimum terms, and the internal time spent on briefing, approvals and following up on handed-over leads.
How to choose a B2B lead generation agency
Rankings and reviews are useful, but treat them as where you start. Roundups of leading US B2B lead generation companies are frequently written by agencies or software sellers with their own interest, so pull a shortlist from them and then do your own checking of every firm.
Work through these steps before signing anything.
- Ask for references in your segment. A firm that books meetings with HR directors may struggle with plant managers or facilities teams.
- Read independent review sites and look for patterns in the complaints, such as unqualified meetings, slow starts or hard-to-cancel contracts.
- Get the lead definition in writing, including who judges whether a meeting is qualified and what happens when it is not.
- Find out who holds ownership of the domains, mailboxes and contact lists. Leaving an agency could mean walking away from all three.
- Confirm who writes the emails and whether you approve them before they go out.
- Request the cancellation terms and the notice period.
- Ask for a realistic timeline. Mailbox warmup alone usually takes several weeks, so a promise of meetings in week one deserves a follow-up question.
Mistakes that make agency engagements fail
Buying before the offer is clear is the most common one. An agency amplifies what you give it. If your pitch is vague, the emails will be vague, and a six-month contract turns that into an expensive test.
Another is judging by activity. Thousands of emails sent and hundreds of connection requests look busy on a report, but only replies from the right people and meetings that turn into pipeline matter.
Teams also under-resource the handoff. A lead that waits two days for a response cools quickly, so decide who answers interested replies and how fast before the first email goes out.
Finally, many companies keep a failing campaign running to honor the contract. Agree on a checkpoint at 30 to 60 days where you review reply quality and can change the audience or the angle.
Doing it with an agent instead
Working as a b2b lead generation company that never sleeps, Yirlo starts from one input: your website address. From it the agent learns your product and who you compete with, identifies the businesses most likely to purchase, and puts forward campaigns that each go after one audience.
Each campaign starts from your website. The agent works out which companies fit what you sell and writes to one decision maker at each. The opening note is built around that company's own situation, and you can preview it before anything goes out. Because every company hears from you once, nobody's team gets repeat pitches.
Yirlo takes care of the sending infrastructure before your first email goes out. It uses domains and mailboxes it set up earlier and keeps in good shape, so you skip buying domains, touching DNS records, warming up inboxes and installing sending tools.
Each reply that arrives gets read and labeled by the agent. For b2b lead generation, two labels do the most work: interested and unsubscribe. When a prospect sounds keen, the agent drafts an answer that moves them to the next step, either a demo or a time slot through your booking link. You can switch on automatic sending for those drafts. Warm replies also reach your own mailbox as hot leads, and you can browse every conversation in the app.
Daily spend shifts toward the campaigns that win replies. Ones that stall get paused, and fresh ones take their place. Every audience, campaign and email stays open to manual edits, and a summary report lands in your inbox on three days each week.
Example: audiences and first-email angles
The value of an agent depends on whether it targets the right companies and says something relevant. Here are three examples of how campaigns might look for different sellers. They are illustrations, not results.
Picture a payroll software company selling to mid-sized employers. One campaign could go to US firms with 50 to 200 staff hiring across several states, another to companies that just opened a second site. The opening email for the first group might raise the compliance burden of payroll in multiple states, written about the specific company receiving it.
A commercial roofing contractor, one of the contractor businesses that sell to other businesses, might target property management companies and facilities managers of warehouses in a single metro area. The email would speak to deferred roof repairs and offer a free condition survey. A contractor that sells to homeowners serves a different market and is a poor fit for this kind of outbound.
A cybersecurity consultancy might target IT directors at regional healthcare groups and compare their public footprint with common audit requirements, ending with an offer to send a short checklist.
The math can be done before you spend. A $150 budget covers roughly 3,000 emails at $0.05 apiece. With a 2% reply rate that yields 60 replies, and if one in three shows interest, you have 20 conversations to pursue. Actual rates depend on your offer, audience and country, so begin small and look at early results before increasing spend.
Agency or agent: the tradeoffs
An agent suits teams that want volume, speed and cost control on email outreach. An agency suits teams that need several channels or a human to run the whole program. The table shows where they differ.
Right now Yirlo reaches prospects by email alone. Calling, texting and social messaging (LinkedIn included) are coming soon, and so is the option to send from domains and mailboxes that belong to you. Anyone who replies with interest can be pushed to the CRM you already run, whether that is Pipedrive, Salesforce, HubSpot or something else. The link works through Yirlo's signed webhooks inside Zapier, n8n or Make, or by wiring your own system to the API. Prospects who prefer to talk by phone will get that option once calling arrives, which is coming soon.
| Factor | B2B lead generation company | Yirlo |
|---|---|---|
| Cost model | Monthly retainer or per-lead fee | About $0.05 per email sent, prepaid credit, no subscription |
| Commitment | Often 3 to 6 months | Set a daily budget and change it any time |
| Setup time | Weeks for domains, warmup and approvals | You enter your website and review proposed campaigns |
| Channels | Email, social messaging, phone, sometimes ads | Email only |
| Human involvement | Account manager and reps | You review and edit, the agent runs the work |
| Control | Varies, often through the account manager | Edit every audience, campaign and email in the app |
| Languages and regions | Depends on the team | Any country or state, 30 languages available |
How to get started in a week
Getting going takes a few steps on the first day. Enter your website, then read through the proposed campaigns. Remove any audience that does not resemble your actual buyers, and reword any email line that sounds off for your brand.
Day two: pick what you want replies to lead to. A booking link suits products sold by a sales team, a trial link fits self-serve tools, and a resource works for early-stage buyers who are not ready to talk.
Day three: choose a daily budget small enough to learn from, say $10 to $20, and load credit. Switch on auto top-up only after the results earn your trust.
Days four to seven: read the results emails, check the labeled replies, and answer hot leads quickly yourself. After a week or two, compare the campaigns by replies and keep the ones that earn them. The agent shifts budget the same way, so your review mostly confirms it.
Questions
What is B2B lead generation?
B2B lead generation means locating companies that might purchase from you and opening conversations with whoever makes the buying decision. Channels include cold email, social media, phone calls, content and events. The aim is a dependable stream of qualified conversations for your sales team.
What is a B2B lead generation agency?
A B2B lead generation agency is an outside team that runs prospecting and outreach on your behalf. It usually builds lists, writes messages, manages sending, and passes you replies or booked meetings. Most charge a monthly retainer, and some charge per lead or per appointment.
How much does B2B lead generation cost?
Pricing varies by model. Managed agencies might bill $4,000 to $10,000 a month, pay per lead providers $100 to $400 per lead, and software tools charge for database access. Yirlo bills roughly $0.05 for every email it sends against a prepaid balance. There is no recurring plan, and finding leads or writing emails adds nothing.
What is the biggest B2B company?
The title moves from one company to another depending on whether you measure revenue, market value or number of customers. Large enterprise technology firms such as Microsoft, Oracle, SAP and Cisco come up most often, along with big industrial and cloud providers. For your lead generation, the fit between a company's buyers and your customer profile counts for more than its size.
Are B2B lead generation company reviews reliable?
They are useful when you read them for patterns. Complaints about unqualified meetings, slow starts or hard cancellation recur across weaker providers. Be cautious with ranking articles written by vendors, and ask any firm for references in your own segment.
Are pay per lead generation companies worth it?
They can be, if the lead is defined clearly. Insist on a written definition of a qualified lead, who verifies it, and a refund or credit for leads that do not meet it. Without that, you may pay for contacts who never wanted to talk.
What are the best lead generation companies for contractors?
It depends on who the contractor sells to. Firms that serve homeowners use local ads and directories, while contractors selling to property managers, builders or facilities teams can use B2B outbound. Yirlo fits the second group, since it emails decision makers at businesses and does not generate homeowner leads.
Can I find a B2B lead generation agency in the USA, or does location matter?
Agencies in the US are plentiful, and one close by may ease scheduling and market knowledge. Even so, a track record with buyers like yours and transparent terms matter more than location. Yirlo lets you pick any country or state, so regions across the US and other markets can all run from a single account.
Does Yirlo replace a B2B lead generation company completely?
Yirlo handles the email side of outbound from start to finish. It finds the companies and contacts, drafts and sends the messages, and works through the responses. Phone, SMS and social messaging are coming soon. Meanwhile, webhooks or the API carry replies and hot leads to your CRM. If your team needs those channels right now, run them with other software or hire an agency alongside Yirlo.
How quickly can I see results from outbound lead generation?
Agencies often need several weeks for setup and warmup before the first meetings. With Yirlo, the sending accounts are already prepared, so emails can go out soon after you approve the campaigns. How many replies you get depends on your offer, audience and email, so begin with a small daily budget and review the results.