There’s no single best lead generation company. The right one depends on your budget, which channels you want, how much risk you’re willing to take and how long you’re willing to commit. Below are seven companies, including us, compared on facts each one publishes on its own website. We checked every page on 26 October 2026 and link to it, so you can check for yourself.
This page is written by RocketFuel, one of the companies listed. We’ve stuck to what each company says about itself and left out anything we couldn’t source.
Listed alphabetically. “Not stated” means the page we checked doesn’t say.
| Company | Channels listed on its site | Contract terms on its site |
|---|---|---|
| Belkins | Cold email and LinkedIn on all plans; cold calling and paid ads on some plans | Not stated |
| Callbox | Phone, email, LinkedIn and web retargeting | “Flexible contract options”; length not stated |
| CIENCE | Phone, email and LinkedIn | Month to month |
| Leadium | Outbound email, cold calling, LinkedIn prospecting and gifting | Month to month |
| Martal | Email, LinkedIn and calls | Pilot campaign of 3 or 4 months, then monthly |
| RocketFuel | Cold email and LinkedIn; ads and SEO available too | Month to month, 30 days’ notice |
| SalesRoads | Phone and email (per its homepage) | “No long-term commitment. Cancel anytime.” |
Sources for every row are in section 4.
Belkins’ website describes monthly retainer packages. It lists a Growth plan (100+ appointments a year), Growth Plus (200+ a year) and a smaller option for lean teams (30+ a year), which it says is “delivered through partnering agencies”. Cold email and LinkedIn outreach are listed on all three. Cold calling, paid advertising and webinar support vary by plan. (belkins.io/pricing, checked 26 Oct 2026)
Might suit you if: you want a set number of appointments a year.
Callbox’s website describes multi-channel campaigns run by dedicated sales development reps. Its website describes “Campaign Pods”, each with one dedicated SDR, a campaign manager, contact data and weekly reporting. (callboxinc.com, checked 26 Oct 2026)
Might suit you if: you want phone as well as email and LinkedIn. See also Callbox alternatives.
CIENCE offers SDRs based offshore or in the US and Europe, with a performance bonus tied to each SDR’s held-meeting target (no bonus below 60% of target). It says setup is “live in less than 14 days”. Terms are “month to month, no long contract”. (cience.com/pricing, checked 26 Oct 2026)
Might suit you if: you want a team of SDRs and month-to-month terms.
Leadium’s website says “all of our contracts are month-to-month” and that onboarding starts on the 1st or 15th of the month. It guarantees “service and sales activity deliverables” but says “we do not provide performance guarantees for the outcomes” of appointment setting. (leadium.com/pricing, checked 26 Oct 2026)
Might suit you if: you want month-to-month terms and channels beyond email, such as gifting.
Martal’s website describes outbound tiers with a pilot of three or four months, followed by a monthly subscription. Its higher tiers add a flat monthly fee plus a sales commission. Outreach runs across email, LinkedIn and calls. (martal.ca/pricing, checked 26 Oct 2026)
Might suit you if: you’re open to a pilot of several months, or to a commission-based model.
We run cold email and LinkedIn outreach, and can add meeting booking, a sales video and landing page, paid ads and SEO. Every booked meeting is backed by our 100% satisfaction guarantee, and every service comes with a risk-free first month. We work month to month with 30 days’ notice. (rocketfuel.marketing/book-a-call/)
Might suit you if: you want email and LinkedIn outreach with our 100% satisfaction guarantee.
SalesRoads describes a dedicated sales development team whose SDRs “call and email decision makers”, supported by a client strategist and an SDR performance coach. It says teams are “launched in 15 business days” and offers “no long-term commitment. Cancel anytime.” (salesroads.com, checked 26 Oct 2026)
Might suit you if: you want phone-led appointment setting with no long-term commitment.
| Company | Pages used |
|---|---|
| Belkins | belkins.io/pricing |
| Callbox | www.callboxinc.com/ – www.callboxinc.com/lead-generation-pricing/ |
| CIENCE | www.cience.com/pricing/ |
| Leadium | www.leadium.com/pricing |
| Martal | martal.ca/pricing/ |
| RocketFuel | rocketfuel.marketing/book-a-call/ |
| SalesRoads | salesroads.com/ |
Ask every company the same questions, and get the answers in writing:
If you want meetings on your calendar rather than lists of leads, look for providers that handle replies and book meetings for you. Every company above describes booking appointments or meetings on its website. Compare how each defines a qualified meeting. See our appointment setting service.
Six of the seven list LinkedIn as a channel on the pages we checked (SalesRoads’ homepage describes calls and email). Ask any provider how they use LinkedIn: LinkedIn’s User Agreement prohibits bots and other unauthorized automated methods to send messages or add contacts (linkedin.com/legal/user-agreement, effective 3 Nov 2025). See our LinkedIn outreach service.
Looking at 6sense alternatives? Compare intent data platforms with a done-for-you option that turns intent signals into booked B2B meetings.
Read → ComparisonGoogle Ads vs Facebook Ads for B2B: how intent, targeting, cost per lead and funnel design differ, and when to run both.
Read → ComparisonLooking for Callbox alternatives? Compare B2B lead generation partners on channels, targeting, reporting and how meetings are booked.
Read →It depends on your budget, channels and appetite for commitment. Use the table and the questions above to shortlist two or three, then ask each for a written proposal.
If email and LinkedIn outreach with our 100% satisfaction guarantee sounds right, book a call. If another company here fits better, we’ll tell you.
Book a Call →Risk-free first month on every service
