Seamless.ai
Seamless.AI is a B2B prospecting platform that searches for emails and phone numbers in real time (rather than serving them from a static database) and adds an AI assistant for drafting outreach messages, with an extremely high G2 rating but a reputation badly damaged on Trustpilot over its billing and cancellation practices.
Attractive data volume and AI features for aggressive prospecting, but recurring, very serious complaints about auto-renewal and difficulty canceling make reading the contract line by line essential before handing over your card.
Seamless.AI has earned a place among the most widely used B2B prospecting tools thanks to its real-time search approach and an AI assistant for drafting outreach. It has also earned, in parallel, one of the worst reputations in the industry when it comes to billing. This review combines the product’s public documentation with verified user reviews on G2 and Trustpilot to put both sides side by side.
What Seamless.AI is and who it’s for
Seamless.AI is a B2B sales intelligence platform founded in 2015 in Columbus, Ohio, by Brandon Bornancin, aimed at sales teams doing high-volume outbound prospecting. Its difference from Lusha, UpLead or RocketReach is architectural: rather than serving data from a stored database that may go months without updating, it searches for and verifies the contact at the exact moment of the query. It competes in the same segment as Cognism, SalesIntel and Kaspr, with a more aggressive positioning toward teams that prioritize volume and speed above everything else.
What it’s like to use day to day
The main workflow runs through the Chrome extension, which works on LinkedIn, LinkedIn Sales Navigator, Gmail and virtually any company web page: when visiting a profile or site, the extension tries to locate the associated email and phone number in real time. The AI Writer, trained specifically on sales copy, generates a personalized prospecting message without leaving the extension, saving time compared with writing each email from scratch. Auto-Find automatically saves profiles while browsing, useful for building lists while researching on LinkedIn.
The discrepancy you can’t ignore: G2 versus Trustpilot
This is where Seamless.AI becomes a particular case within the category. On G2, the platform holds a rating of 4.4 out of 5 with more than 5,000 reviews and was recognized as a satisfaction leader at G2’s awards. On Trustpilot, the rating drops to 1.4 out of 5. The reason for the difference is consistent across negative reviews: auto-renewal charges with no clear notice, cancellation windows of up to 60 days, and reported cases of charges after requesting cancellation. This isn’t a pattern that appears in isolation but a complaint repeated with very similar details across different users, suggesting a structural issue in the cancellation process rather than isolated cases.
Data quality
Real-time search is, in theory, Seamless.AI’s biggest advantage over static databases. In practice, user reviews report inconsistent accuracy, in a range of 60% to 80% depending on the case, with more issues on direct phone numbers than on emails. That’s a reasonable level for high-volume prospecting, but not comparable to UpLead’s 95% email accuracy guarantee, nor to Cognism’s or SalesIntel’s manual mobile verification.
Pricing and plans
Seamless.AI offers a free plan with 50 credits (for email and phone combined), no credit card required, designed as a data-quality test rather than a recurring usage tier. Paid Pro plans start, depending on the source consulted, between $79 and $147/month, and can scale up to $250-300/user/month at higher tiers; additional credits are purchased separately once the plan’s allotment runs out. This variation in figures between sources is itself a sign that the final price depends quite a bit on negotiation and timing.
2026 product updates and personal data removal
In 2026, Seamless.AI added a Deal Prediction Engine that uses AI to score which prospects are most likely to convert based on interaction patterns, joining AI Writer as a second layer of artificial intelligence within the product. On compliance, the company states separate data storage for the EU and US and offers its own portal (login.seamless.ai/personalDataRequest) for requesting personal data deletion under CCPA, with a stated turnaround of 30-45 days for verified requests. The important nuance, noted by several independent third-party data-removal guides, is that Seamless.AI’s own business model — reconstructing contacts from corporate email domains and company switchboards at the moment of search — means a deleted profile can reappear weeks later if it’s detected again by the system, something structural to real-time search tools and not exclusive to Seamless.AI.
How it compares to the alternatives
| Seamless.AI | Lusha | Cognism | RocketReach | |
|---|---|---|---|---|
| Strength | Real-time search + AI writing | LinkedIn extension and a genuine free plan | Manually verified mobiles in Europe | Large database (700M+ contacts) |
| Entry price | Free (50 credits) / from ~$79/month | Free / from ~$50/user/month | No public price (from ~$15,000/year) | From ~$59-83/month |
| Weakness | Very low Trustpilot reputation over billing | Phones less reliable than emails | Opaque pricing, mandatory annual contract | Outdated phones and job titles in some reviews |
Frequently asked questions
Why is Seamless.AI’s rating so different on G2 versus Trustpilot? On G2 (4.4/5), reviews about the product and data quality predominate; on Trustpilot (1.4/5), complaints about billing, auto-renewal and difficulty canceling predominate. Both reflect real experiences, but of different aspects of the service.
Does Seamless.AI have a free plan? Yes, a permanent free plan with 50 credits (email and phone), no credit card required, designed to evaluate data quality before paying.
Is it easy to cancel Seamless.AI? According to numerous reviews, no: contracts have cancellation windows of up to 60 days and there’s no fully self-service process, which has generated complaints about charges after requesting cancellation. It’s worth noting the renewal date and confirming cancellation in writing.
How accurate is Seamless.AI’s data? User reviews report inconsistent accuracy, between 60% and 80% depending on the case, with more room for error on phone numbers than on emails.
Can I remove my personal data from Seamless.AI if I appear in its database? Yes, through the company’s personal data request portal or by calling its privacy line, with a stated 30-45 day turnaround under CCPA. Keep in mind that, according to independent guides, the profile may regenerate later if the system detects it again from public sources.
Methodology for this review
This analysis is based on Seamless.AI’s public documentation (official site and pricing page) and verified reviews from real users published on G2 and Trustpilot, checked in September 2026. It does not replace our own extensive testing with a long-term active account. You can read more about how we work in our editorial methodology.
- Sales teams doing aggressive outbound that need a high volume of new contacts, not just a static database
- Anyone who values a built-in AI assistant for drafting prospecting messages without leaving the tool
- Users willing to read the cancellation terms carefully before signing up for a paid plan
- Anyone who prioritizes easy, friction-free cancellation or pausing above all else
- Teams on a tight budget that can't absorb an unexpected renewal charge
- Operations where phone accuracy is critical: several users report an inconsistent hit rate (60-80%)
Instead of serving data from a static database, Seamless.AI crawls and verifies information at the moment a search is performed.
Limitation: Accuracy reported by users varies notably (60-80%), especially on phone numbers.
Reveals contacts directly on LinkedIn, LinkedIn Sales Navigator, Gmail and company websites, without leaving the browser.
An AI assistant trained on sales copy to draft personalized prospecting emails directly from the extension.
Automatically saves profiles while browsing and allows advanced searches using ideal-customer-profile (ICP) filters.
Syncs with the most common CRMs to enrich and keep existing contact records up to date.
An AI engine that analyzes interaction patterns to score which prospects are most likely to convert, designed to help high-lead-volume teams prioritize their work.
Seamless.AI states GDPR and CCPA compliance with EU and US storage options and a personal-data deletion (opt-out) request process managed through its own portal.
Limitation: Several independent third-party data-removal guides note that a deleted profile can regenerate weeks later, since the system can rebuild it from corporate email domains and company switchboards.
Free plan with 50 credits (email and phone combined), no credit card required. Paid Pro plans start around $79-147/month depending on source and contracted credit volume, scaling up to $250-300/user/month at higher tiers; additional credits are sold separately. Contracts feature auto-renewal and a cancellation window of up to 60 days.
Monthly or annual per-user subscription with contact-reveal credits, plus a free plan with 50 one-time credits; auto-renewal unless canceled within the contract's timeframe.
- Free plan: Yes
- Free trial: No
Price checked on September 12, 2026. Prices can change: check the current price with the provider.
- Real-time search for emails and phone numbers, instead of serving data from a stale static database
- Chrome extension that works on LinkedIn, LinkedIn Sales Navigator, Gmail and company websites
- Built-in AI assistant (AI Writer) for drafting personalized outreach messages without leaving the extension
- Very high rating with a large review volume on G2 (4.4/5, over 5,000 reviews), recognized as a satisfaction leader
- Free plan with 50 credits (email and phone) with no credit card required to test data quality
- Badly damaged reputation on Trustpilot (1.4/5), with a consistent pattern of complaints about auto-renewal with no clear notice
- Contracts with cancellation windows of up to 60 days, and several users report charges even after requesting cancellation
- Inconsistent data accuracy per reviews (60-80%), especially on direct phone numbers
- The real price of Pro plans varies a lot by source (from $79 to over $250/user/month), making it hard to compare in advance
- There's no 100% self-service cancellation process: canceling requires contacting support or the accounts team directly
See our editorial methodology.
- Data quality and accuracy7 / 10
- Ease of use8 / 10
- Price and transparency5.5 / 10
- Coverage and feature depth7.5 / 10
- Trust (billing, cancellation, transparency)4.5 / 10