Interseller
Find contacts, send sequences, close faster.
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.
Key features
returns verified work emails by name and domain
Chrome extension
event-driven integrations
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.
Agentic stack profile
APIRESTProgrammatic access available.
REST API — straightforward to call from any agent or workflow tool. Rate limits and auth vary by plan.
API docs →Agentic readinessCapableSolid 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 roleData source · SequencerWhere 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.
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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.