Adapt.io vs SignalHire: Data Enrichment Tool Comparison

Adapt.io vs SignalHire: Data Enrichment Tool Comparison

SignalHire charges $69 a month for 1,000 email credits and lists unlimited users on every plan. Adapt.io charges $99 a month for 1,000 email credits and applies a daily contact ceiling. Those two sentences cover most of the price argument, and the interesting part is what each vendor gives up to make its side of it work.

The Quick Answer

SignalHire is cheaper for the same email volume, listing 1,000 credits at $69 a month against Adapt.io's 1,000 email credits at $99 a month, and its feature list states unlimited users on all plans. Adapt.io's advantages are ABM list building, a tech sector taxonomy and a genuinely low $49 entry rung. Choose SignalHire for volume and team access, Adapt.io for filter-driven list building.

Understanding the Core Difference

Adapt.io is a B2B lead intelligence platform with a large contact database, Prospector Chrome extension, and data enrichment with 50+ attributes.

SignalHire is a real-time verified contact finder with browser extension for LinkedIn, Facebook, and Twitter, plus team collaboration features.

SignalHire splits its product by data type, selling emails and phone numbers as separate plans at the same price. Adapt.io stacks credit types inside one plan, so email, enrichment and phone allowances all move together as you climb the ladder. A team that only wants email addresses does better under the split model, and a team that wants both pays twice under it.

Pricing Comparison

FreeAdapt.io entry plan

Free plan, 25 email credits

FreeSignalHire entry plan

Free plan, 5 or 10 credits

Adapt.io Pricing

Phone credits appear only at Basic, so a team that needs mobile numbers starts at the third rung rather than the second. The page prices a yearly commitment 20 percent below monthly and opens with a 7-day free trial that asks for no credit card.

Source: Adapt.io Pricing

SignalHire Pricing

The unusual thing here is that emails and phone numbers are separate products at the same price rather than tiers of one product. A team that wants both buys both, and the phone allowance is well under half the email allowance for the same money.

Source: SignalHire Pricing

How these figures were checked

Adapt.io's tiers, credit allowances, daily contact ceilings, yearly discount and free trial terms were all grepped out of a dated snapshot of adapt.io/pricing taken for this comparison. SignalHire's two paid plans and their credit counts were grepped out of a dated snapshot of signalhire.com/pricing taken for this comparison.

Two habits sit behind those sentences and both are worth borrowing when you check a vendor price yourself. A figure belongs to a page rather than to a company, because vendors contradict themselves across their own surfaces, so the page is part of the fact. And a pricing page that renders a monthly and an annual state into the same document will hand a careless reader a rate no visitor is shown, which is why the billing basis is named beside every number above rather than left implied.

What the two cost at a realistic volume

Take an invented month at 1,000 verified emails and 400 phone numbers for a team of three. The volumes are illustrative and both sets of rates are published. On SignalHire that is the Emails plan at $69 a month for 1,000 credits plus the Phones plan at $69 a month for 435 credits, so $138 a month total, and unlimited users on all plans means the team size costs nothing extra. On Adapt.io the email requirement sits on Basic at $99 a month with 1,000 email credits, and the phone requirement does not fit at all, since Basic carries only 100 phone credits. The honest reading is that Adapt.io does not serve a phone requirement of this size on any published tier.

Reading the price ladders against each other

Two constraints shape the comparison beyond the headline rates. Adapt.io applies a daily contact ceiling of 50 on Starter and 100 on Basic, so 1,000 monthly credits cannot be spent in a single sitting. SignalHire's phone allowance is under half its email allowance for the same money, at 435 against 1,000. Adapt.io prices a yearly commitment 20 percent below monthly and opens with a 7-day free trial that asks for no credit card, which makes its entry rung the cheaper of the two to test at $49.

Features Breakdown

Adapt.io lists

• Business contacts across the database
• Company profiles
• Prospector Chrome extension
• Data enrichment with 50+ attributes
• Lead builder with advanced filters
• ABM list building
• and 3 more listed below

Both tools

• CSV export

SignalHire lists

• Real-time verified contact data
• Browser extension for LinkedIn, Facebook, Twitter
• Unlimited users on all plans
• Team management and collaboration
• ATS and CRM integration
• Bulk search capabilities
• and 2 more listed below

Adapt.io key features

• Business contacts across the database
• Company profiles
• Prospector Chrome extension
• Data enrichment with 50+ attributes
• Lead builder with advanced filters
• ABM list building
• 3,000+ tech sector classifications
• Saved searches
• CSV export
• API access

SignalHire key features

• Real-time verified contact data
• Browser extension for LinkedIn, Facebook, Twitter
• Unlimited users on all plans
• Team management and collaboration
• CSV export
• ATS and CRM integration
• Bulk search capabilities
• Technology tracking
• Company search

SignalHire's list covers real time verified contact data, a browser extension spanning LinkedIn, Facebook and Twitter, unlimited users, team management, bulk search and ATS and CRM integration. Adapt.io's covers advanced filters, saved searches, ABM list building from uploaded domains, 3,000 plus tech sector classifications and API access. The extension breadth beyond LinkedIn is SignalHire's genuine differentiator, and the ABM upload is Adapt.io's.

Integration Ecosystem

Adapt.io connects with: Salesforce, HubSpot, Zoho CRM, Marketo, Outreach, Zapier.

SignalHire connects with: Salesforce, HubSpot, Greenhouse, Lever, Zapier, Gmail, Outlook.

Both tools integrate with: Salesforce, HubSpot, Zapier.

SignalHire reaches Greenhouse and Lever alongside Gmail and Outlook, which is a recruiting footprint. Adapt.io reaches Zoho CRM, Marketo and Outreach, which is a sales and marketing one. Both cover Salesforce, HubSpot and Zapier. If outbound runs through a sales engagement platform, only one of these connects to it directly.

Who Should Pick Which

Pick SignalHire when volume and headcount are the constraints. Unlimited users on every plan changes the arithmetic for any team above one person, and 1,000 email credits for $69 is the better rate of the two.

Pick Adapt.io when lists come from firmographic criteria. The ABM upload, saved searches and sector taxonomy are the product, and SignalHire has no equivalent for building a segment from a set of company domains.

Pick Adapt.io when your outbound runs through Outreach or a marketing automation platform. SignalHire's integration list is recruiting shaped and reaches neither, so the data would arrive by CSV rather than through a pipe.

Where Each One Sits in a Cold Outbound Stack

1. Step 1Build the list

   Decide who belongs on it at all. Adapt.io is a list builder you run before anyone is contacted.

2. Step 2Resolve the contact

   Turn a name into an address you can send to. SignalHire is a real-time verifier split into an email product and a phone product.

3. Step 3Verify before sending

   Check the address separately from whoever supplied it, because a bounce costs sending reputation.

4. Step 4Send one message

   One message per campaign, no bumps and no thread replies, so each address gets a single attempt.

Both sit in the sourcing slot of a cold outbound stack and neither is a sending tool, so the choice does not disturb anything downstream. What it changes is how much volume a wave can afford and how many people can work on it.

More volume is not automatically an improvement. House practice is one message per campaign with no bumps and no thread replies, so every address bought is one single attempt and a poor one costs sending reputation with nothing to recover it. Cheap volume only helps when the verification step after enrichment is doing its job, which is why that step stays separate from whichever tool supplied the row. See email verification tools.

Switching Between Them

Neither holds workflow state, so a move is a CSV export plus a CRM reconnection, and Salesforce, HubSpot and Zapier are covered on both sides.

Seats are the number to check first. A team moving from SignalHire to Adapt.io is moving from unlimited users to an account-based plan with a daily contact ceiling, and the ceiling rather than the credit total is usually what bites. Going the other way, confirm that the firmographic filtering you relied on has an equivalent, because SignalHire's strength is resolution rather than segmentation.

Feature Comparison Summary

Getting Started Checklist

1. Split your requirement into email volume and phone volume, since SignalHire prices them separately
2. Count the people who need access, because only one of these charges for them
3. Check Adapt.io's daily contact ceiling against how you build lists
4. Confirm whether you need to build segments from company domains, which only Adapt.io does
5. Check whether outbound runs through Outreach, which only Adapt.io reaches
6. Test both free tiers on the same 100 rows of your own ICP

Final Thoughts

SignalHire is the better value for email volume and the clear winner for any team above one seat, since unlimited users removes the variable that usually makes contact data expensive. Adapt.io earns its price on segmentation, with ABM list building and sector classification that SignalHire does not match. Decide whether you are resolving people or building segments, then buy for that.

Related Reading

• Best Adapt.io Alternatives in 2026
• Best SignalHire Alternatives in 2026
• Adapt.io vs Apollo.io: Data Enrichment Tool Comparison
• Adapt.io vs ZoomInfo: Data Enrichment Tool Comparison
• Apollo.io vs SignalHire: Data Enrichment Tool Comparison

If you would rather have this run for you, RevenueFlow books qualified meetings on a pay-per-meeting basis and publishes client results.

Pricing and features are taken from the vendors' own pages. Verify current terms with the vendor before relying on them.