Coresignal vs Datagma (2026): Data, Pricing and API Compared

Coresignal is a large professional-data API with employee, company and job records, sold on credits. Datagma is a mobile and email finder sold in monthly bundles. Coresignal wins on dataset size, job data, published limits and an MCP server. Datagma wins on entry price, mobile numbers and lookups from a name and a company.

Every price and limit below was checked in September 2026, with its source link. Where a vendor publishes nothing, the page says so.

Verdict

• Pick Coresignal if you need job postings, a published dataset size, documented rate limits up to 100 requests per second, or an MCP server that returns records. You pay in credits, and a work email costs 20 of them.
• Pick Datagma if you enrich a known list of a few thousand contacts a month, need direct mobiles, or have names and companies instead of profile URLs. Regular is $49 a month, and you pay only for a match.
• Pick neither if you want email and phone numbers on one flat price at volume. Coresignal's employee dictionaries list no phone field, and Datagma has no public price above 22,500 emails a month. LeadOcean is one option.

Side by side

All figures checked September 2026. The 1M row means 1,000,000 work-email lookups a month.

Data and coverage

Coresignal publishes a dataset size and Datagma does not. Coresignal lists 907M+ employee records, 70M+ company records and 482M+ job postings (Coresignal, September 2026). Datagma gives no figure for any of them, so you cannot size its database before you test it.

Email works differently in each. Coresignal puts a professional email and a status (verified, matched_email, matched_pattern, guessed_common_pattern) in its Multi-source Employee records. Its Base Employee pages list no email field (Coresignal docs, September 2026). Datagma returns verified work emails only. Catch-all addresses it cannot verify come back as "most probable" and are not billed (Datagma API, September 2026).

Phones split the two. Coresignal's employee dictionaries list no phone field, so a dial means a second vendor. Datagma is built around direct mobiles and checks whether a number is on WhatsApp. It claims top 3 EU phone coverage and publishes no count (Datagma pricing, September 2026).

Coresignal also sells data Datagma does not. Job postings cost 1 credit each, and a Real-time Employee API fetches live profiles (Coresignal docs, September 2026). Datagma's signal is a job change detection endpoint for contacts you already hold (Datagma API docs, September 2026).

Run the same 500 people through each before you buy. Match rate depends on your input, and neither vendor publishes one.

API and developer experience

Coresignal is a search-then-collect API with a header key. Datagma is a smaller surface where every call is a GET and the key sits in the URL. The input each one accepts differs more than the style.

Coresignal collects a full record by employee ID, profile URL or shorthand name. A multi-source record costs 20 credits and includes the professional email (Coresignal docs, September 2026). The request, with a placeholder person:

curl -X GET \
  "https://api.coresignal.com/cdapi/v2/employee_multi_source/collect/jane-doe" \
  -H "accept: application/json" \
  -H "apikey: $CORESIGNAL_API_KEY"

Search by filter or Elasticsearch DSL is free and returns IDs. You pay when you collect, and a search preview costs 10 or 20 credits a call (Coresignal docs, September 2026).

Datagma's Find Work Verified Email takes a name plus a company name or domain, with no profile URL needed. It returns a verified result or nothing, and costs no credit on a miss (Datagma docs, Datagma API, September 2026).

curl "https://gateway.datagma.net/api/ingress/v8/findEmail?apiId=$DATAGMA_API_ID&fullName=Jane%20Doe&company=acme.com"

If you hold names and companies, Datagma fits without a prior step. If you hold profile URLs or want filtered search, Coresignal is the better fit. Datagma's /v2/full enrichment also takes a profile URL, an email, or a name plus a company, at 2 credits a match (Datagma API, September 2026).

Rate limits shape how each scales. Coresignal publishes them by plan: 5 requests per second on Free, Mini and Starter, 10 on Pro, 50 on Premium and 100 on Scale (Coresignal docs, September 2026). Datagma lists no limit, so ask before you plan a batch job.

For agents, Coresignal runs a first-party MCP server with 5 tools and OAuth 2.1. entity_search costs 20 credits a call, and entity_fetch costs 20 credits per employee or company record (Coresignal MCP docs, September 2026). Datagma's only listed server is run by Zapier and exposes five actions (Zapier, September 2026).

Pricing

Coresignal charges in credits, and the plan sets the price of a credit. Datagma charges per match inside a monthly bundle. To compare them, price the same job: work emails found per month.

Coresignal bills 20 credits for a contact enrichment or a multi-source employee record. The Contact Enrichment API is included from Pro upward (Coresignal pricing, September 2026). We assume Datagma counts one email allowance per verified email, since its pricing page lists emails and phones separately.

At 10,000 work emails a month. Coresignal needs 10,000 x 20 = 200,000 credits. Pro (35,000 credits) covers 1,750 lookups, and Growth (150,000 credits) covers 7,500. Only Premium fits: 1,000,000 credits for $1,500 a month, or $1,350 a month billed yearly. Monthly Premium is self-serve (Get started opens sign-up), while the yearly plan goes through Contact us (Coresignal pricing, October 2026). Premium carries a 3-month credit rollover (Coresignal docs, September 2026).

Datagma Popular covers 7,500 emails, so you need Expert: $249 a month, or $209 billed yearly, for 22,500 emails (Datagma pricing, September 2026). At 10,000 emails Datagma is cheaper by $1,500 - $249 = $1,251 a month on monthly billing. One caveat: Coresignal's email can carry a guessed-pattern status, while Datagma returns verified emails only.

Phones change the sum. Expert includes 750 phones a month, and 10,000 phones is about 13 times that, so it becomes an Enterprise quote. Coresignal has no phone to price.

At 1M work emails a month. Coresignal needs 1,000,000 x 20 = 20,000,000 credits. No public plan reaches that. Elite, the largest, is $5,000 a month for 10,000,000 credits, which covers 500,000 lookups (Coresignal pricing, September 2026). There is no public price at 1M.

Derived, not published: two Elite months at $0.0005 a credit is about $10,000. Coresignal does not document stacking two Elite plans, so ask for a quote. Billed yearly, Elite is $4,500 a month.

Datagma has no public price at 1M either. Expert is the largest self-serve plan, and 1,000,000 / 22,500 is about 44 times its monthly email allowance. Enterprise is custom through sales, and no per-email rate is published (Datagma pricing, September 2026). We do not multiply the Expert rate out to 1M, because Enterprise may price lower.

The honest read: at 10,000 emails Datagma is far cheaper. At 1M neither vendor shows a price, so you need two quotes. For more Datagma matchups, see Prospeo vs Datagma, LeadMagic vs Datagma and Hunter vs Datagma. For Coresignal alone, see the Coresignal alternative page and Coresignal alternatives.

Where Coresignal wins

• Dataset size. 907M+ employee records and 70M+ companies, published on its homepage. Datagma publishes no size.
• Job postings. 482M+ postings at 1 credit each. Datagma has none.
• Filtered search. Search by filter or Elasticsearch DSL costs no credits. Datagma's Find People lists up to 10 people at a company for 10 credits (Datagma API docs, September 2026).
• Published limits. 5 to 100+ requests per second by plan. Datagma lists none.
• An MCP server that returns records. First-party, with OAuth 2.1.
• Data at scale. Flat-file datasets from $1,000 a month, and an account manager on Premium (Coresignal pricing, September 2026).

Coresignal's weak points are no phone numbers, a $1,500 plan to reach 10,000 email lookups, and no public price at 1M.

Where Datagma wins

• Entry price. $49 a month, or $39 billed yearly, for 3,000 emails and 100 phones. Unused credits roll over for up to 12 months on paid plans (Datagma pricing, September 2026).
• A real free plan. 90 emails and 3 phones a month, forever, with API access. Coresignal's trial is 2,000 credits for 7 days.
• Mobile numbers. Direct mobiles with a WhatsApp check, and a Chrome extension on every plan.
• Lookup inputs. A name plus a company name or domain works with no profile URL.
• You pay for matches. A verified-email miss costs no credit, and unverifiable catch-all addresses are not billed.
• File upload. Up to 50,000 rows per batch, against 10,000 records per Bulk Collect request.

Datagma's weak points are the 22,500-email ceiling on self-serve plans, no published rate limit or dataset size, and no first-party MCP server.

If you need volume through an API

We build LeadOcean, so weigh this section accordingly. It has a free plan with 1,000 records, one-off, no card. Pro is $499 a month, flat, with unlimited searches, enrichments and lookups, and no credits or per-record price (LeadOcean pricing, September 2026).

It holds 693M people, 366M with an email and 166M with a phone number, plus 63M companies. The same REST API and a hosted MCP server with 12 tools run on every plan (LeadOcean MCP docs, September 2026).

For bulk pulls, POST /v1/exports returns up to 50,000 rows per request, or you can use the Exports page in the app. 1M rows is 20 requests over two days (LeadOcean exports docs, September 2026). See pricing for the detail.

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