Belkins alternatives for enterprise B2B companies

Seqnced published this comparison. We build and operate enterprise outbound systems for sophisticated B2B companies. Our clients typically operate at $3 million plus revenue and sell $25,000 plus annual contract values into markets with buying committees.

We serve aerospace and defense, manufacturing, industrials, logistics, fintech, financial services, medtech and compliance. We run market mapping, account research, dedicated sending infrastructure, cold email, LinkedIn, warm calls after positive replies, reply qualification, pre-call nurture and sales handoff. One team owns the full sequence from research to handoff.

This suits complex sales environments. According to a Gartner survey of 632 B2B buyers conducted August to September 2024, 74 percent of B2B buyer teams demonstrate unhealthy conflict during the buying decision process. Consensus requires careful messaging across multiple stakeholders.

Belkins sells B2B lead generation. Their homepage states they deliver 100 to 400 plus qualified appointments in a year through tailored omnichannel strategies. They serve over 50 industries.

Their channels include cold email outreach, cold and intent calling, voicemails, SMS and WhatsApp, LinkedIn lead generation and paid advertising. They also offer outsourced SDRs, lead research and HubSpot consulting.

Belkins was founded in 2017. According to their homepage, they hold a Clutch rating of 4.9 out of 5 from 230 reviews and a G2 rating of 4.8 from 93 reviews. Their Clutch profile lists a minimum project size of $1,000 plus. Their pricing page shows plans for Growth, Growth Plus, small business and Enterprise with no figures, stating to talk to their expert to find out what pricing plan suits you.

CIENCE sells managed GTM execution and SDR and GTM run for you. They offer outbound SDR, inbound SDR, scaled outbound, local SDR, inside sales, cold email, cold calling, appointment setting and demand generation.

They report serving 250 plus verticals and 2,500 plus B2B teams. Founded in 2015 and headquartered in Denver, Colorado, they hold a Clutch rating of 4.2 out of 5 from 142 reviews. Their minimum project size is $1,000 plus.

CIENCE publishes pricing. Their homepage states managed SDR services start from $5,600 per month. Their Revenue System Setup takes 60 days and starts from $9,500.

Callbox sells B2B lead generation for pipeline growth. They describe their service as B2B Lead Gen powered by Human plus AI across phone, email, LinkedIn and digital channels.

Their services include B2B lead generation, appointment setting, account-based marketing, event and webinar marketing, outsourced SDR teams and cross-border lead gen. They list software, SaaS, cybersecurity, fintech, healthcare tech, manufacturing and 50 plus additional verticals.

Founded in 2004, Callbox reports serving over 15,000 companies. Their Clutch rating is 4.6 out of 5 from 128 reviews. Their client mix is 45 percent enterprise over $1 billion and 40 percent mid-market. They offer custom pricing with no public rates.

Martal Group sells outbound lead generation, cold emailing, appointment setting and sales outsourcing services. Their Clutch tagline states they are the number one AI-Powered Outbound Engine for B2B Brands. They offer appointment setting, cold email, LinkedIn lead generation, cold calling, an AI sales platform, sales training and inbound lead qualification. They list over 25 industries including manufacturing, logistics, fintech, healthcare, cybersecurity and SaaS. Their team includes over 200 onshore sales executives split across the US, Canada, EU and LATAM. Founded in 2009 and headquartered in Oakville, Canada, they hold a Clutch rating of 4.8 out of 5 from 109 reviews. Their minimum project size is $1,000 plus. Typical project costs run $10,000 to $49,000 based on 86 reviews. They offer flat fee per month or flat fee per month plus sales commission models.

SalesRoads states they will build your dream pipeline and take on cold calls, refine the message and all the nitty gritty work. They offer appointment setting, lead generation, SDR outsourcing, outbound calling, outbound email, list building, account reactivation and inbound appointment setting. They are phone-first. Their industries include manufacturing, FED and SLED public sector, SaaS and healthcare. Founded in 2007 and headquartered in Boca Raton, Florida, they hold a Clutch rating of 4.9 out of 5 from 68 reviews. Their minimum project size is $10,000 plus with most common projects ranging $50,000 to $199,999.

Leadium sells B2B Lead Generation and Sales Appointments. They offer appointment setting via email, phone, LinkedIn, SMS and gifting plus inbound lead qualification. They emphasize 100 percent human-sourced and validated contact data plus deliverability and sales tech. Their industries include SaaS, cybersecurity, freight logistics, healthcare, manufacturing and staffing. Founded in 2016 and headquartered in Las Vegas, Nevada, they hold a Clutch rating of 5.0 out of 5 from 85 reviews. Their minimum project size is $1,000 plus.

Belkins analyzed 7.5 million cold emails sent across client campaigns throughout 2025. According to their study published June 26, 2026, the average reply rate was 0.45 percent. This measured replies against emails sent, not opens. At this rate, generating one hundred replies requires sending over twenty-two thousand emails.

Buyer behavior complicates the funnel. According to a Gartner survey of 646 B2B buyers conducted August to September 2025, 67 percent of B2B buyers prefer a rep-free experience. Yet according to a Gartner survey of 645 buyers from the same period, 69 percent prefer to validate AI-generated insights with sales reps. Buyers self-serve but need human validation at critical moments.

Complex sales add committee dynamics. Gartner surveyed 632 B2B buyers between August and September 2024. They found that 74 percent of B2B buyer teams demonstrate unhealthy conflict during the buying decision process. Buying groups range from five to 16 people. Groups that reach consensus are 2.5 times more likely to report that their deal was high-quality. Your agency must navigate conflict, not just generate clicks.

Match the agency model to your sales motion and contract value. If you sell $25,000 plus annual contracts into committees, verify that the agency handles pre-call nurture and qualification, not just appointment setting. Ask for specific experience in your vertical, particularly in regulated industries.

Ask each agency four questions. What is your minimum project size and what is the typical total cost for a six-month engagement? Which channels are included in the base fee and which require additional investment? How do you handle reply qualification and pre-call nurture before handing leads to our sales team? What is your experience with buying committees of five to 16 stakeholders?

Review their published minimums. CIENCE publishes pricing starting at $5,600 per month. Martal Group shows typical projects between $10,000 and $49,000. SalesRoads lists minimums of $10,000 plus with common projects at $50,000 to $199,999. Belkins, Callbox and Leadium list $1,000 plus minimums. These figures indicate the resource level and commitment each agency expects.