

Callbox focuses heavily on cold calling and large-scale outbound campaigns. Cleverly takes a more targeted approach, helping you connect with decision-makers through personalized LinkedIn prospecting campaigns.
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| Features |
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|---|---|---|
| U.S. Based Dedicated Account Manager | ||
| 1000+ Verified 5 Star Reviews | ||
| Done-For-You Targeting & List Building | ||
| Done-For-You Messaging Sequence | ||
| Real Time & Advance Metrics Reporting | ||
| Real Human Response Handling (No AI) | ||
| Real Human Appointment Setting (No AI) | ||
| Done-For-You Integration With Your CRM | ||
| Leads Won With Fortune 100 | ||
| Real Time Email & Call Support From Your Account Manager | ||
| Run Campaigns on Own Infrastructure |
Callbox gives you the strategy. Cleverly gives you the strategy, execution, optimization, and results.
Cleverly optimizes for booked meetings and pipeline, not vanity metrics like connection counts.
Cleverly uses human-like, compliant outreach methods, reducing account risk compared to aggressive automation setups.
Cleverly has helped 1,000+ B2B companies generate predictable outbound results—across SaaS, agencies, services, and enterprise sales.
You get a dedicated account manager, not just a dashboard.
Don't just take our word for it — see what real customers are saying!
Cant think of a single thing.... Very expensive, no leads, no growth for any ROI and every week having someone read me an email full of stats and waste more time was icing on the cake.
The quality of work and the follow-up. Required too much management and handholding. They do not know how to adapt outside of the script.
I feel that the customer service I have received has not been as helpful as it should be.
My experience was made great by the ease of setting up the program. I really like for thoroughness of the program.
The call was the right way to kick off a new relationship. I hun gup with confidence and peace of mind that I had made the right decision to work together .
I love how easy Cleverly makes it to meet my goals!
Cleverly focuses on LinkedIn-based outbound lead generation designed to start conversations with decision-makers and book qualified meetings. Callbox operates as a broader B2B lead generation provider that uses a mix of channels such as cold calling, email campaigns, and database marketing rather than specializing in LinkedIn outreach.
Cleverly is specifically built for LinkedIn prospecting and outreach. It focuses on personalized messaging and targeted connection strategies to engage ideal prospects on LinkedIn, while Callbox typically relies more on multi-channel outbound campaigns like email and cold calling.
Cleverly centers its strategy on building one-to-one conversations with decision-makers through LinkedIn outreach. Callbox generally focuses on large-scale outbound campaigns that combine telemarketing, email marketing, and database-driven prospecting.
Cleverly is ideal for B2B companies that want to leverage LinkedIn as their primary prospecting channel to connect with niche decision-makers. Teams that want a focused, relationship-driven outbound strategy often find Cleverly a better fit than broader outbound vendors.
Many teams choose Cleverly because it provides a specialized LinkedIn lead generation system, covering prospect targeting, outreach messaging, campaign management, and response handling—focused on creating qualified sales conversations instead of relying on large-scale telemarketing or email campaigns.