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Interseller

Find contacts, send sequences, close faster.

Data & Discovery
For AI agents
APICapable readiness
About

What is Interseller

Interseller finds verified work and personal email addresses for prospects and candidates, then runs automated, personalized email sequences from a single platform. It's built for SDRs, BDRs, and founders at SMBs and mid-market companies who need to move from contact discovery to outreach without switching tools. The Chrome extension lets you source and verify emails directly from LinkedIn, GitHub, Crunchbase, and other sites, then push contacts into a sequence without leaving your browser. Sequences sync back to connected CRMs and ATSs — including Greenhouse, Lever, and JobAdder — so pipeline stays current without manual data entry. At 250 lookups per user per month on the base plan, teams with high-volume prospecting needs will hit the ceiling quickly and should weigh that constraint before committing.

Data & DiscoveryOutreach
Capabilities

Key features

Email finder

returns verified work emails by name and domain

Also ships

Chrome extension

Outbound webhooks

event-driven integrations

Our verdict

Vanderbuild take

Interseller is a focused email finder and sequencer — not a full sales engagement platform — and for SDRs, BDRs, and founders who need to go from contact discovery to booked meeting without a bloated stack, it does that job cleanly. The API is available and functional, so you can wrap Interseller into your own MCP layer or agentic outbound workflow without too much friction, though MCP-native support isn't confirmed and you'll be doing that integration work yourself. At $200 per user per month, it's affordable for small teams, but the 250-lookup cap per user is a real constraint if your team runs high-volume prospecting cycles. The single visible pricing tier also means there's no obvious upgrade path — no custom pricing, no refunds — so what you see is what you get, for better or worse.

Mateusz Sekta
Founder, vanderbuild
Learn more

Our Resources

The wedge

Agentic stack profile

API
REST

Programmatic access available.

REST API — straightforward to call from any agent or workflow tool. Rate limits and auth vary by plan.

API docs →
Agentic readiness
Capable

Solid API access — wraps cleanly for agent use.

Solid REST or SDK access. No MCP server yet, but easy to wrap in custom agent tooling. Most modern SaaS tools land here.

Stack role
Data source · Sequencer

Where this tool slots into an agentic pipeline.

Plays the role of Data source + Sequencer in an agentic pipeline. Use it to source contacts, companies, and the raw inputs an agent needs to act; send and track multi-step outbound cadences across channels.

Compare

Interseller alternatives

Tools that solve a similar problem — compared at a glance.

Interseller(this tool)
Pricing
Seat-based
Budget
$$
Best for
SDR / BDR, Founder
Readiness
Capable
API
REST
Findymail
Pricing
Freemium
Budget
$$
Best for
SDR / BDR, RevOps
Readiness
Capable
API
REST
BetterContact
Pricing
Usage-based
Budget
$
Best for
SDR / BDR, Founder
Readiness
Capable
API
REST
Answers

Frequently asked questions

Does Interseller have a public API?

Yes — Interseller ships a REST API. Docs: https://interseller.readme.io/.

How much does Interseller cost?

Interseller: pricing is seat-based, expect mid tier ($$) spend. Full pricing page: https://help.interseller.io/article/290-important-subscription-plan-update.

Who is Interseller best for?

Interseller is built for SDR / BDR, Founder. Fits SMB (1-50), Mid-market (50-500)-sized teams.

How well does Interseller fit an agentic sales stack?

Tier: Capable. Solid public API, no MCP yet — straightforward to wrap in your own agent tooling.