Callbox Alternatives: Six Options Compared
Callbox is a B2B lead generation company. If you’re weighing it against other options, this page sets out what Callbox says it offers and six alternatives, using only facts each company publishes on its own website. We checked every page on 26 October 2026 and link to it.
RocketFuel is one of the alternatives listed. We’ve held ourselves to the same standard.
What Callbox says it offers
According to its website (checked 26 October 2026):
Model
“Campaign Pods”, each with one dedicated sales development rep, a multi-channel cadence, contact data, a campaign manager and weekly reporting.
Channels
its subscription includes phone, email, LinkedIn and web retargeting.
Contract length
“flexible contract options”; length not stated.
If you want phone as part of the mix, Callbox may be a good fit. Here are the alternatives if it doesn’t.
Reasons to look at other options
Buyers usually compare providers on:
Budget
a provider that fits what they want to spend
Channels
some want phone; others want email and LinkedIn only
Commitment
month-to-month terms versus a pilot or fixed term
Risk
a guarantee on activity, on meeting quality, or none
Six Callbox alternatives
Listed alphabetically. “Not stated” means the page we checked doesn’t say.
| Alternative | 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 |
| 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 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.” |
Belkins. Monthly retainers built around a yearly number of appointments: 100+ (Growth), 200+ (Growth Plus) or 30+ for lean teams through partner agencies.
CIENCE. SDRs based offshore or in the US and Europe, with a performance bonus tied to held meetings and a one-time setup. Also built around dedicated SDRs.
Leadium. Month-to-month contracts. Guarantees “service and sales activity deliverables” but not appointment outcomes.
Martal. Outbound tiers list a 3- or 4-month pilot, then a monthly subscription. Higher tiers add a sales commission.
RocketFuel (us). Email and LinkedIn outreach, with meeting booking available. Every booked meeting is backed by our 100% satisfaction guarantee, and every service comes with a risk-free first month.
SalesRoads. Dedicated SDRs who call and email, with a client strategist and SDR coach, “launched in 15 business days”.
Or hire in-house. If you’d rather build your own team, see outsourced lead generation vs in-house.
How to pick the right one
Want phone in the mix?
Callbox, CIENCE, Leadium, Martal and SalesRoads list calling; Belkins lists it on some packages. RocketFuel doesn’t.
Want to avoid long commitments?
CIENCE and Leadium say month to month; SalesRoads says cancel anytime; Martal’s outbound tiers start with a 3- or 4-month pilot.
Want a guarantee on meeting quality?
Ask each provider in writing. Ours is described above.
Sources (all checked 26 October 2026)
| Company | Pages used |
|---|---|
| Callbox | www.callboxinc.com/ – www.callboxinc.com/lead-generation-pricing/ |
| Belkins | belkins.io/pricing |
| CIENCE | www.cience.com/pricing/ |
| Leadium | www.leadium.com/pricing |
| Martal | martal.ca/pricing/ |
| RocketFuel | rocketfuel.marketing/book-a-call/ |
| SalesRoads | salesroads.com/ |
Does Callbox include phone calls?
Yes. Its website lists phone, email, LinkedIn and web retargeting as the channels in its subscription.
Which Callbox alternatives don’t include cold calling?
RocketFuel focuses on email and LinkedIn outreach. Belkins lists it on some packages only. CIENCE, Leadium, Martal and SalesRoads list calling.
See if RocketFuel fits
If email and LinkedIn outreach with our 100% satisfaction guarantee suits you, book a call. If you need phone, one of the other options may suit you better, and we’ll say so.
Book a Call →Risk-free first month on every service