Seamless review (2026): features, pros and cons, and what to check before you buy
Seamless helps revenue teams research buyers and manage prospect data. Its offering focuses on B2B contact lookup, phone and email research.
Our take for buyers
Seamless is a B2B contact lookup tool for phone and email research, aimed at prospecting teams from small businesses through enterprise. It connects to Salesforce, HubSpot, Salesloft and Outreach. It is cloud based. G2 shows 4.4 from 5,420 reviews, with fast contact list building and useful CRM integrations as the main praise from reviewers. Pricing is credit based, with a free tier and paid tiers by quote.
It fits outbound teams that want contact discovery with enrichment workflows. The main caution from reviewers is data quality, since some report incorrect phone and contact details. Treat accuracy as the central test in any evaluation, ahead of interface or price, and run that test on your own target segments with a sample you can check line by line.
Pros
- Fast contact list building.
- Useful CRM integrations.
Cons
- Some reviewers report incorrect phone and contact details.
- Quote-only paid tiers complicate cost comparison.
- Best for
- Outbound teams that want contact discovery with enrichment workflows.
- Starting price
- Contact sales
- G2 rating
- 4.4 (5,420 reviews)
What is Seamless?
Seamless helps revenue teams research buyers and manage prospect data. Its offering focuses on B2B contact lookup, phone and email research. Seamless is a B2B contact lookup tool for phone and email research, used by outbound teams from SMB through enterprise. It stands out for fast contact list building, a free tier with limited credits, and integrations with Salesforce, HubSpot, Salesloft and Outreach, with paid tiers by quote.
Category: Sales Intelligence Software
Seamless key features
| Criterion | What we found |
|---|---|
| Contact and company coverage | B2B contact lookup. |
| Workflow integration | Salesforce, HubSpot, Salesloft, Outreach. |
| Credit and export controls | Free tier with limited credits; paid credit volumes set by quote. |
| Pricing and contract model | Credits; paid tiers by quote. |
| Buyer and rollout fit | SMB through enterprise prospecting teams. |
Seamless plans and pricing
Seamless does not publish a price list; pricing is quoted on request.
Free tier available; paid tiers are sold by quote.
Who should shortlist Seamless
A strong fit for
- Outbound teams that want contact discovery with enrichment workflows.
- Organizations seeking B2B contact lookup.
A weak fit for
- Evaluate data quality with a sample; check export credits and any optional enrichment add-ons.
Seamless alternatives
ZoomInfo GTM WorkspaceTeams that need broad account intelligence alongside CRM workflows.
LinkedIn Sales NavigatorRelationship-led prospecting using LinkedIn network signals.
Apollo.ioSmall teams seeking prospect data and outbound sequences in one tool.
CognismTeams with European prospecting and mobile verification requirements.
UpLeadBuyers wanting transparent contact-credit pricing and a self-serve pilot.
6sense Sales IntelligenceAccount-based selling programs that need prioritization and intent context.
Security, admin and compliance
Seamless lists SOC 2 Type II and ISO 27001. SSO, SCIM, audit logs, data residency, a DPA, implementation terms and support levels are not published. Paid tiers are sold by quote with credit volumes set in the contract. Before signing, ask for the DPA, SSO availability by plan, a written credit allowance and the renewal terms.
- Certifications
- SOC 2 Type II, ISO 27001.
Contract and buying terms
- Contract
- Credits; paid tiers by quote.
- Starting price
- Contact sales.
- Pricing model
- Credits; paid tiers by quote.
- Free plan or trial
- Free plan.
What to test in a Seamless demo or trial
Run a sample of contacts you can check yourself and measure how many phone numbers and emails are correct, because some reviewers report incorrect phone and contact details. Check how export credits work and whether optional enrichment add-ons are needed for your use case. Test the integration you will rely on, whether Salesforce, HubSpot, Salesloft or Outreach, with real records, and use the free tier to judge usability before talking to sales.
Questions to ask Seamless before you sign
These are the points Seamless's public pages leave open. Get the answers in writing before procurement signs off.
- Which plan includes SAML SSO, and what does it cost for our seat count?
- Is SCIM provisioning included, or a paid add-on?
- Which plan includes audit logs, and how long are they kept?
- Where is our data stored, and can we choose the region?
- Can we sign your standard DPA without changes?
- What will the price be at renewal, and is the increase capped?
Things to know before a demo
- Published commercial structure: Credits; paid tiers by quote.
- Core scope: B2B contact lookup; Phone and email research.
- Practical fit: Outbound teams that want contact discovery with enrichment workflows.
Seamless FAQ
What is Seamless used for?
Seamless is a B2B contact lookup tool for phone and email research, used by outbound teams from SMB through enterprise. It stands out for fast contact list building, a free tier with limited credits, and integrations with Salesforce, HubSpot, Salesloft and Outreach, with paid tiers by quote. It suits outbound teams that want contact discovery with enrichment workflows.
Does Seamless support SAML SSO?
SSO is not listed in the published details. Ask the vendor which plan includes it, if any, and request SCIM and audit log information at the same time.
Which security standards does Seamless list?
Seamless lists SOC 2 Type II and ISO 27001. A DPA and data residency options are not published, so request them before purchase.
Who is Seamless best for?
Outbound teams that want contact discovery with enrichment workflows and CRM sync. Buyers who need verified accuracy should test a sample first, given reviewer reports of incorrect contact details.
Sources
Every fact on this page comes from Seamless's own pricing, product or documentation pages, G2 and company records, checked on October 24, 2026. Unknown values are left out instead of estimated.