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Seamless.ai alternatives: 4 tools, 16 of 30 founders on Telegram

By NAUT Research · · 6 min read

16 of 30 Seamless.ai alternatives sampled founders in the NAUT crypto database with Telegram on file, read 14 November 2026. Logos: Strategy, Stellar, Pump.fun, Maple, Kyber Network, Crypto Banter, oobit, BetHog, Lava Network, Primus Labs, Aligned, Camelot.

The Seamless.ai alternatives NAUT checked on 14 November 2026 are Apollo, Lusha and NAUT itself, scored with Seamless.ai on 3 fixed criteria from each vendor's own pages, where Apollo and Lusha each met 2 of 3 and Seamless.ai met 1. NAUT tracks 3,403 founders and CEOs with an X handle at crypto companies, and in a fixed sample of 30 of them NAUT's data shows 16 with Telegram, 12 with LinkedIn and 2 with email on file.

How this test was run: NAUT published this test and sells one of the tools in it, so NAUT's own contact data is reported outside the score. The 3 criteria were fixed before any tool was scored: does the vendor's own page state the size of its contact data, does it state a credit rule (what a credit buys or when credits lapse), and does it state a free allowance. A rival fact counts only if it sits on that vendor's own page, read on 14 November 2026, and NAUT's checker found the quoted words there. 7 rival claims went to that check; on 6 the checker found the words, and those 6 are the only rival facts printed. The 7th, about Seamless.ai pricing, is left out as a fact: the seamless.ai/pricing page returned only its title and no price values to NAUT's fetch. RocketReach's site also returned no values to the fetch, and G2 returned HTTP 403, so neither is in the score. No rival was run against the 30 founders, because that needs paid accounts, so every rival's founder data is not tested. NAUT will re-read every page by 14 December 2026.

How was this Seamless.ai alternatives test scored?

Each vendor gets 1 point per criterion its own page met with a checked fact, out of 3. A cell reading None checked means NAUT's checker found nothing quotable for that criterion on the page it read, which is not proof the vendor lacks it.

Tool, score Data size Credit rule Free tier
Apollo, 2 of 3 240M contacts Expire each cycle None checked
Lusha, 2 of 3 None checked 1 credit per email, 5 per phone 40 credits a month
Seamless.ai, 1 of 3 1.8B+ emails, 414M+ phones None checked None checked
NAUT, not scored 3,403 founders 5 credits per data call $0, no card

Every cell comes from that vendor's own page. No rival was tested on the 30 founders. NAUT's row comes from its own pricing page and database, and is kept out of the ranking because NAUT wrote the test; its 30-founder result is in the next section.

What do Seamless.ai, Apollo and Lusha say on their own pages?

Seamless.ai's homepage claims "1.8B+ verified business emails and 414M+ phone numbers" and says it is "Trusted by 1M+ sales leaders worldwide". Those are the vendor's own figures, and none was tested against crypto founders here.

Apollo's pricing page says "Access 240M contacts & 30M companies" under its data access plan, and it warns that "Unused credits expire at the end of each billing cycle and do not carry over." A BD team that buys credits for a 1-off list should plan to spend them inside the cycle.

Lusha's pricing page says "The Free plan provides you with up to 40 credits per month." Revealing a verified email costs 1 credit and revealing a phone number costs 5, so the free plan covers up to 40 emails, or 8 phone numbers, a month.

What crypto founder contacts does NAUT hold for 30 founders in its database?

To test NAUT as a crypto contact database, NAUT drew 30 founders and CEOs, 1 per company, from a pool of 3,403 by a hash of each record's id, so the draw favours no company. Every person in the pool has an X handle on file, because that was a condition of the draw.

Founder contacts in NAUT's crypto database, sample of 30
  1. X handle30
  2. Telegram16
  3. LinkedIn URL12
  4. Email2

7 of the 30 have both Telegram and LinkedIn on file, 9 have Telegram alone, 5 have LinkedIn alone, and 9 have neither. NAUT holds no phone number for any of the 30, or for any of the 3,403 in the pool. Across that pool NAUT holds LinkedIn for 2,298, Telegram for 1,975 and email for 261.

Which founders are in the sample?

25 of the 30 are listed below with their title, company and the channels on file on 14 November 2026. The other 5 are left out of the list because NAUT's record shows each of them in an open role at a 2nd company as well, so the company to name is not settled; their channels still count in the totals above. X handles show on NAUT's free public profiles, while Telegram, email and LinkedIn values unlock on a paid plan, so the list shows only which channels exist.

Anyone listed can ask NAUT to remove their page at https://naut.so/legal/data-deletion.

Which Seamless.ai alternatives fit a crypto BD team?

It depends on the channel the team works. Seamless.ai and Lusha sell email and phone data, while NAUT holds no phone number for anyone in this pool and email for 2 of the 30 sampled founders; for Telegram and X, NAUT holds Telegram for 16 of the 30 and X for all 30.

  • A BD lead writing on Telegram or X can start on NAUT: each founder's page says which channels are on file.
  • A team that needs phone numbers has to look past NAUT, which holds none in this pool; Lusha charges 5 credits per phone reveal on its own page.
  • A team that needs a founder email can take the name and company from NAUT to an email tool such as Lusha, whose free plan gives up to 40 credits a month.
  • An investor sourcing founders can open the 12 of 30 with LinkedIn and the 16 with Telegram first.
How a BD team can reach a crypto founder
  1. Find the founderSearch NAUT: all 30 sampled founders have an X handle on file.
  2. Pick the channelTelegram is on file for 16 of the 30 and LinkedIn for 12.
  3. Fill the email gapEmail is on file for 2 of the 30, so take the rest to an email tool.
  4. Price the revealLusha charges 1 credit per email and 5 per phone on its own page.

Related reading on NAUT: How to find a crypto founder email: 5 methods, 10 tested and Apollo.io alternatives: 4 crypto BD tools, 50 decision makers.

Can you pull this data through the NAUT API?

Yes: GET https://api.naut.so/v1/people?q=founder with the header Authorization: Bearer $NAUT_KEY searches people by name, handle or title and returns each record's twitterHandle and the flags hasEmail, hasPhone, hasTelegram and hasLinkedin, at 5 credits a call. Revealing 1 founder's private channels with GET https://api.naut.so/v1/people/{id}?include=private costs 10 credits the first time and is a permanent unlock; the API docs and pricing list the rest. Verified Telegram, email and LinkedIn unlock on any paid NAUT plan, so start a 7-day trial to reach the founders counted here.

Seamless.ai alternatives FAQ

What is the best Seamless.ai alternative for finding crypto contacts?

Of the 3 vendors NAUT scored on their own pages on 14 November 2026, Apollo and Lusha met 2 of 3 fixed criteria each and Seamless.ai met 1. No rival's data on crypto founders was tested, so for Telegram and X NAUT is the tool measured here, with Telegram on file for 16 of 30 founders sampled from NAUT's crypto database and X for all 30.

How many contacts does Seamless.ai say it has?

Seamless.ai's homepage, read 14 November 2026, claims 1.8B+ verified business emails and 414M+ phone numbers, and says it is trusted by 1M+ sales leaders. NAUT did not test those figures against crypto founders.

Does Lusha have a free plan?

Yes. Lusha's pricing page, read 14 November 2026, says its Free plan gives up to 40 credits a month, at 1 credit per verified email and 5 credits per phone number.

Where can I find crypto founders and their contact channels?

NAUT tracks 3,403 founders and CEOs with an X handle at crypto companies, and each founder's NAUT page shows which channels are on file: in a sample of 30 read 14 November 2026, 16 had Telegram, 12 LinkedIn and 2 email. Verified Telegram, email and LinkedIn unlock on any paid NAUT plan, so start a 7-day trial.

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