RB2B vs. Cold Email Agency: 2026 Pricing and Fit Guide

RB2B and a cold email agency solve different problems. RB2B identifies anonymous visitors already on your website and pushes their name, company, and LinkedIn profile to Slack or your CRM. It doesn't find new prospects, write copy, or send any email. A cold email agency does the opposite: it sources net-new contacts, writes the copy, and runs the sending infrastructure. Most B2B teams end up needing both, not one instead of the other.

What RB2B Does

RB2B is a website visitor identification tool. It runs a pixel on your site, matches visitor device and IP signals against its data partners (including Demandbase for reverse-IP lookups), and reveals who was on your site even if they never filled out a form.

Depending on plan, it can surface a visitor's name, company, LinkedIn URL, and business email address, then push that lead into Slack, Microsoft Teams, Salesforce, HubSpot, Clay, or one of 50+ other integrations. Filters let you narrow alerts by company revenue, headcount, seniority, department, and geography, and "Hot Pages" tagging flags visits to high-intent URLs like pricing or demo pages.

What RB2B Costs in 2026

RB2B runs four tiers, per RB2B's pricing page: a Free plan at $0/month, Starter at $79/month, Pro at $149/month, and Pro+ at $199/month. Every paid tier bills more once you exceed your monthly "resolutions" (identified visitors), and a second domain costs an extra $99/month.

Plan	Price	Monthly resolutions	What's included
Free	$0/mo	150	Company-level ID only (15-20% match rate), Slack push, no person-level data
Starter	$79/mo	300	Person-level ID with LinkedIn URL, no email address, +45 cents/resolution overage
Pro	$149/mo	600, scalable to 2,500	Email enrichment, LinkedIn URLs, full integrations, +25 cents/resolution overage
Pro+	$199/mo	600, scalable past 2.5M	Premium resolution, US contact-level ID at 35-45% coverage, +25 cents/resolution overage

RB2B also offers a 7-day free trial of the Pro plan with no credit card required, and the Free plan stays free indefinitely, per RB2B's pricing page. There's no published enterprise or custom tier beyond Pro+.

What RB2B Doesn't Do

RB2B tells you who already showed up. It has no mechanism for reaching people who haven't. Four gaps matter most for anyone evaluating it as a replacement for outbound:

• No cold-sending infrastructure. RB2B doesn't own or warm up sending domains, rotate inboxes, or manage deliverability. It has nothing to send with.
• No cold email copywriting. The tool surfaces a name and a LinkedIn URL. Someone still has to write a subject line and a first-touch message that gets a reply.
• No net-new list building. RB2B only identifies people who already visited your site. If your traffic is thin, RB2B has almost nothing to work with. See our list building guide for how agencies source contacts who've never heard of you.
• No reply triage. Once a lead lands in Slack, someone on your team still has to reach out, follow up, and manage the thread through to a booked call.

When to Pick RB2B vs. a Cold Email Agency

Pick RB2B if you already have meaningful website traffic (from ads, SEO, or a strong brand) and just need to convert the anonymous portion of it. It's cheap at the Starter and Pro tiers and takes about five minutes to install.

Pick a cold email agency if your problem is pipeline volume, not visitor conversion. Most early-stage and mid-market B2B teams don't have enough inbound traffic for a visitor-ID tool to matter. Modern Inbound has delivered 6,000+ warm leads. It builds the list, writes the copy, and runs the sending infrastructure end to end, the parts RB2B doesn't touch. For a framework on evaluating agencies against tools like this, read our guide to picking a cold email agency.

Plenty of teams run both: RB2B on the site to catch warm anonymous visitors, and an agency running cold outbound to create demand in the first place. They solve different ends of the same funnel, not the same problem.

FAQ

Does RB2B send cold emails?

No. RB2B identifies who visited your website and pushes that data to Slack, Teams, or your CRM. It has no sending infrastructure, no email templates, and no outbound sequencing. Reaching the identified visitor is entirely on your team.

How much does RB2B cost in 2026?

RB2B's four tiers run from $0/month (Free) to $199/month (Pro+), per RB2B's pricing page. Overage charges of 25-45 cents per resolution apply above the plan's monthly limit, and each additional domain costs $99/month.

Can RB2B replace a cold email agency?

No. RB2B only surfaces people who already visited your site. A cold email agency finds people who've never heard of you, builds the list, writes the copy, and runs the send. They solve different problems and most teams that need pipeline volume still need the agency.

Does RB2B work if my website gets little traffic?

Not well. RB2B can only identify visitors you already have. With low traffic, even the higher tiers won't surface enough leads to justify the cost. That's the scenario where a cold email agency, which creates traffic and conversations from scratch, does more.

If your site traffic is thin, converting anonymous visitors won't move pipeline much no matter which tool you buy. See how the setup works or get in touch to talk through your funnel.

By Rishabh Ambasta, Founder, Modern Inbound.