lemlist
Sales engagement platform to find leads, enrich contacts and run multichannel outreach campaigns.
Updated Sep 27, 2026
Overview
lemlist is a sales engagement platform for cold outreach: it finds leads in
its people and companies databases, enriches them with verified emails and
phone numbers, runs multichannel campaigns across email, LinkedIn, phone and
WhatsApp, and keeps contacts and replies in its own CRM and inbox. The MCP
server and the lemlist CLI sign in with OAuth; the MCP server also accepts
an API key in an X-API-Key header, and ?bucket= narrows the tools it
advertises. The CLI's lemlist api <METHOD> <path> calls any endpoint of the
REST API.
The REST API uses HTTP Basic auth with an empty username and the API key as
the password, so LEMLIST_API_KEY must hold the base64 encoding of :
followed by the key. Each key may send 20 requests every 2 seconds, and
enrichment spends the team's credits.
Workflows
Workflows that use lemlist's tools.
TContributed by thedogwiththedataonitEmail buyers at newly funded companiesFinds companies that just raised with People Data Labs, gets each buyer's email from Apollo, and queues an approved email in lemlist.
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l- TContributed by thedogwiththedataonitEmail companies whose job posts show they need your product
Finds new job posts for roles you support with Exa, checks each for a real need or a competitor with Jev, and emails the hiring team.
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T
H+1 - TContributed by thedogwiththedataonitReopen closed-lost deals when something has changed
Finds Salesforce deals lost months ago, checks who is still there and what changed, and queues an email to them in lemlist.
SAl - TContributed by thedogwiththedataonitEmail new GitHub stargazers who fit your ideal customer
Finds who recently starred your repo, keeps the people at companies you sell to, and queues a no-pitch thank-you email in lemlist.
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Tools
What agents can reach at lemlist.
- Add a lead to a campaign
Creates a lead in a lemlist campaign from an email, name, company and custom variables, optionally finding or verifying their email first; it never updates an existing lead.
- Find a person's email or phone
Starts a lookup that finds a person's verified email, phone number or LinkedIn profile, or verifies an email you have, and returns an id to fetch the result with.
- Search companies
Returns companies from lemlist's database that match filters such as industry, company size or technologies used, with their location, employee count and technologies.
- Search people
Returns people from lemlist's B2B database who match filters such as country, job title or department, with their LinkedIn profile and current company but no email address.
- Send an email from the inbox
Sends one email to a lemlist contact or lead from a connected mailbox, as a new message or as a reply in their latest thread.