Key takeaways
- Seamless.AI focuses on fast contact lookup for named prospects.
- Lusha, Kaspr and LeadIQ return phone numbers as well as emails, by their own descriptions.
- Hunter specialises in email finding and verification; UpLead sells contacts by the credit.
- Pebbles Ai finds work emails, not phone numbers, and adds a CRM, research and drafting.
Why do teams look for Seamless.AI alternatives
Teams look for Seamless.AI alternatives when they want a different way of finding contacts, such as from LinkedIn profiles, inside the CRM or with dedicated email verification. Seamless.AI positions itself as a real-time search engine for sales leads, with a data engine, an engagement hub and AI agents, and suits sellers who look up named prospects quickly.
Some sellers do most of their prospecting on LinkedIn and want details in one click there. Others want contacts captured straight into the CRM, or want every address verified before it enters a campaign. Some want the lookup to sit next to research and writing.
What should you test in a Seamless.AI alternative
Test each alternative on the same list of prospects you already know, because contact data quality varies by region, industry and seniority. Twenty to thirty names you can check by hand tell you more than any feature table.
Take an illustrative recruiter-turned-founder selling training software to HR directors in the Netherlands. She should run the same twenty-five HR directors through each shortlisted tool and note how many emails were found, how many bounced and whether any phone numbers were returned.
- Hit rate on known contacts in your own markets.
- Email verification and how uncertain addresses are flagged.
- Phone numbers, if your team calls.
- Where contacts go next: a browser list, your CRM or a campaign.
How do the main Seamless.AI alternatives compare
The alternatives differ in where they work, what data they return and how they charge. Each entry paraphrases the vendor's own pages; the cards below link them.
- Lusha: email and phone lookups through a browser extension, CRM integrations, API and MCP, with a free tier.
- Kaspr: a Chrome extension that reveals emails and phone numbers from LinkedIn profiles, with a free tier.
- Hunter: domain search, an email finder and a dedicated verifier, plus simple sequences and an API, with a free plan.
- LeadIQ: captures contacts from the browser and syncs them to the CRM, with emails and mobile numbers and AI message writing.
- UpLead: a credit-based contact database for finding and verifying emails, with intent data on its top tier.
- Apollo.io: a self-serve contact database with sequences, a dialler and deliverability tools, and a free plan.
How does Pebbles Ai compare with Seamless.AI
Pebbles Ai finds people at the companies you name rather than looking up one contact at a time. Its Find fresh leads tool searches one to ten target companies by role and location, returns up to a hundred leads a run, and saves each as a CRM contact with a work email where one is found, a confidence score and a catch-all flag.
Leads come from Pebbles Ai's own growing B2B contact database, GDPR compliant, and it does not return phone numbers. What it adds is a built-in CRM, labelled Beta, research with numbered citations, and email and LinkedIn outreach written from your company knowledge and saved as drafts in your own mailbox.
Seamless.AI alternatives at a glance
Who each alternative suits and whether it publishes a free plan, in each vendor's own terms.
| Best for | Free plan | |
|---|---|---|
| Lusha | Sellers who want email and phone lookups in the browser and CRM with simple credit pricing. | Yes |
| Kaspr | Sellers prospecting on LinkedIn who want contact details in one click. | Yes |
| Hunter | Anyone who needs to find and verify professional email addresses quickly, with a free start. | Yes |
| LeadIQ | SDRs who prospect from LinkedIn and company sites in the browser and want contacts captured and synced straight into their CRM. | Yes |
| UpLead | Small teams buying verified contact lists by the credit. | No |
| Apollo.io | Sales teams that want a large self-serve contact database and a full outbound engine (sequences, calling, deliverability tools) in one subscription, starting free. | Yes |
| Pebbles Ai | Teams that want leads at named companies with work emails, research and drafts; it returns no phone numbers, sends no automated sequences and has no dialler. | No; Pro and Team start with a 1-month free trial |
From each product's own public pages, checked 2 November 2026. Plans change, so confirm on each vendor's site.
The products compared
Lusha
B2B contact data and enrichment
A B2B contact data tool for finding emails and phone numbers through a browser extension, CRM integrations, API and MCP, on credit-based plans with a free tier.
Best for: Sellers who want email and phone lookups in the browser and CRM with simple credit pricing.
Pricing model: Free, Starter, Professional, Premium and Scale, by monthly credits. Source: Lusha pricing
Kaspr
LinkedIn contact finder
A Chrome extension that reveals emails and phone numbers from LinkedIn profiles, with CRM export and per-user plans, including a free tier.
Best for: Sellers prospecting on LinkedIn who want contact details in one click.
Pricing model: Free, Starter, Business and Enterprise, per user. Source: Kaspr pricing
Hunter
Email finder and verifier
An email finding and verification tool with domain search, an email finder, a verifier, simple sequences, company discovery and an API, with a free plan.
Best for: Anyone who needs to find and verify professional email addresses quickly, with a free start.
Pricing model: Free, Starter, Growth, Scale and Enterprise; yearly billing at a discount. Source: Hunter pricing
LeadIQ
B2B prospecting and contact data
A B2B prospecting platform that captures contacts from the browser, returns emails and mobile numbers on credits, syncs to the CRM and adds AI message writing, job change tracking and an agent.
Best for: SDRs who prospect from LinkedIn and company sites in the browser and want contacts captured and synced straight into their CRM.
Pricing model: Free, Pro and Enterprise; Pro is priced by monthly credit volume, with monthly or annual billing and an annual discount; Enterprise is custom. Source: LeadIQ pricing
UpLead
B2B contact database
A B2B contact database with credit-based plans for finding and verifying emails, with intent data on its top tier and a short trial.
Best for: Small teams buying verified contact lists by the credit.
Pricing model: Essentials, Plus and Professional; monthly or annual; single-user except Professional. Source: UpLead pricing
Apollo.io
Sales intelligence and engagement platform
A go-to-market platform built around a B2B contact and company database it sizes at 240M+ contacts, with prospecting, enrichment, sequences, a dialler, meetings and deal tracking in one product, plus a free plan.
Best for: Sales teams that want a self-serve contact database and a full outbound engine (sequences, calling, deliverability tools) in one subscription, starting free.
Pricing model: Free, Basic, Professional and Custom plans; credits shared across the team and reset monthly; monthly or annual billing with an annual discount. Basic adds email sequencing, Professional adds AI features and call recording, Custom adds SSO and API. Source: Apollo.io pricing
We make Pebbles Ai. Facts about other products come from their own public pages, checked on .
Where Pebbles Ai fits
- CapabilityProspecting & customer recordsFind fresh leads at one to ten named companies by role and location, saved as CRM contacts with a work email where one is found, a confidence score and a catch-all flag.
- CapabilityOutreach contentWrite email and LinkedIn outreach for those contacts from your company knowledge, with emails saved as drafts in your own mailbox.
Common questions
Which Seamless.AI alternative has a free plan?
Lusha, Kaspr, Hunter, LeadIQ and Apollo.io publish free plans or tiers on their own pricing pages. UpLead does not list one. Pebbles Ai has no free plan; Pro and Team start with a 1-month free trial.
Can Pebbles Ai replace Seamless.AI for phone lookups?
No. Pebbles Ai returns a work email where one is found, with a confidence score and a catch-all flag, but not phone numbers, so callers keep a phone data tool.
How do you move contacts from Seamless.AI to Pebbles Ai?
Export your contacts from Seamless.AI as a CSV file and import the file into the Pebbles Ai CRM, which also imports contacts from Google and Microsoft.
About this page. Written by the Pebbles Ai team for people who run sales, marketing and growth. Last updated .
