Seamless.ai

Real-time contact search engine

Reviews on G2 Founded 2015 · Columbus, OH

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Starting price

Custom pricing

Budget tier

Mid-range

Complexity

Beginner-friendly

Integrations

25+

Best for

High-volume US prospecting teams that want lots of contacts fast.

Overview

Seamless.ai is a real-time search engine for B2B contacts that builds lists with emails and phone numbers on demand. Volume is high and the extension is handy, though data accuracy and sales-driven pricing draw mixed reviews.

Founded in 2015 and based in Columbus, OH, Seamless.ai competes in the prospecting & lead data category. It is easy to get started with, and it is mid-priced for the value it delivers (Custom pricing). In practice, Seamless.ai is best for high-volume US prospecting teams that want lots of contacts fast.

Most teams use a prospecting tool at the very top of the funnel: a rep defines an ideal-customer profile, builds a list of matching companies and people, and enriches it with verified emails and direct dials before a single message goes out. The quality of this step sets the ceiling for everything downstream, no sequence or dialer can rescue a list built on bad data.

Key features

Here is what Seamless.ai brings to the table, and what each capability means in practice.

Email finder

Finds verified professional email addresses from a name and company, so reps can reach prospects without guessing or bouncing. The best implementations check each address against live mail servers before returning it, which keeps your sender reputation intact.

Mobile / direct dials

Surfaces direct dials and mobile numbers rather than switchboard lines, which is the single biggest lever on connect rates. Reaching a prospect on their cell instead of a front desk can multiply the number of live conversations a rep has in a day.

Bulk enrichment

Enriches an entire list in one pass, filling in missing emails, phone numbers, job titles, and firmographics. Instead of researching contacts one by one, a rep uploads a list and gets a clean, outreach-ready file back in minutes.

LinkedIn / Chrome extension

A browser and LinkedIn extension lets reps capture and enrich contacts directly while they prospect, without switching tabs. Because so much B2B research happens on LinkedIn, this is where many teams spend most of their prospecting time.

Intent data

Layers buyer-intent signals on top of contacts so you can prioritize accounts that are already researching your category. Reaching out while a company is actively in-market is far more productive than cold-calling a static list.

1-click CRM export

Pushes enriched contacts straight into your CRM in one click, mapped to the right fields. Keeping data where reps already work avoids the copy-paste errors and stale records that quietly erode a pipeline.

API & webhooks

An API and webhooks let teams automate workflows and pipe data into their own systems and dashboards. For RevOps teams, this is what makes the tool a building block rather than a silo.

Who it's for

Seamless.ai is built for startups and mid-market teams. It is a particularly strong fit for high-volume US prospecting teams that want lots of contacts fast, and reps will find it easy to get started with.

It is less of a fit in a few cases. It may be more than solo users with very basic needs require, and if data accuracy is inconsistent is a dealbreaker for you, it is worth weighing against the alternatives before committing.

Typical users include SDRs building their daily call and email lists, RevOps teams enriching and de-duplicating the CRM, and founders doing their own outbound before a sales team exists.

Integrations & ecosystem

Seamless.ai connects with around 25+ tools, including Salesforce, HubSpot, Outreach, Salesloft and Zapier. That matters because a sales tool is only as useful as the rest of your stack: the tighter it plugs into your CRM and workflow, the less manual data entry your reps do and the cleaner your reporting stays.

An open API and webhooks mean Seamless.ai can also be wired into custom workflows, internal dashboards, and the rest of your data stack, which is what RevOps teams look for when they want a tool to act as a building block rather than a silo.

Pricing & value

Seamless.ai is mid-priced for the value it delivers. Free trial credits; paid plans custom, credit-based. The value case is strongest for the teams it is built for: when that is you, the time saved and meetings booked tend to outweigh the cost. If it is not, a lighter tool may serve you just as well for less. As always, the sticker price is only part of the story: weigh onboarding time, the tier your team will realistically land on, and any add-ons before comparing it against the alternatives.

Strengths & limitations

On the strengths side, Seamless.ai stands out for a few reasons: large volume of contacts on demand; handy Chrome extension; and real-time search rather than stale lists.

The trade-offs are worth knowing before you commit: data accuracy is inconsistent; aggressive sales and renewal tactics reported; and credit limits and opaque pricing. None of these are necessarily dealbreakers, but they are the points to pressure-test during a trial.

The bottom line

Seamless.ai delivers real-time contact search engine, and it earns its place across startups and mid-market teams. The standout reasons to pick it are clear, large volume of contacts on demand chief among them, while the main thing to weigh is that data accuracy is inconsistent. If that trade-off fits your situation, Seamless.ai is well worth a trial.