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Instantly API

instantly.ai

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VerifiedResearched, not yet routed
Add leads to campaigns with your own API key. Buying direct: Outreach Growth $47/mo. Listed .
Capabilities
1
From
$0 / call
Calls, 30 days
41K
Ranked first
1 of 1

Overview

Researched from the vendor's own pages; every fact links to its source and the day we checked it.

Cold email platform with warm-up, campaigns and a B2B lead database; API v2 with bearer keys.

Company

Legal name
Not confirmed
Headquarters
Not confirmed
Founded
2019
Employees
Not confirmed
Ownership
Not confirmed
Kind
Not confirmed
Website
Not confirmed

API

Verified
Access
Self-serve API
Style
REST
Auth
Bearer token
Base URL
https://api.instantly.ai/api/v2
Features
Bulk —Async —Webhooks YesMCP —Sandbox —
Rate limit
100 requests/second and 6,000 requests/minute
Docs
ReferenceRate limits

Pricing

Model
subscription
List prices
  • Outreach Growth $47/mo
  • Outreach Hypergrowth $358/mo
Currency
USD
Free tier
Not confirmed
Checked
Sep 29, 2026

Compliance

SOC 2
Not confirmed
GDPR
Not confirmed
CCPA
Not confirmed
DPA
Not confirmed
Resale / storage
Unknown until a written agreement says otherwise

Relationships

Integrations
Not confirmed
Alternatives
None named by the vendor
Sources (2)

Placement in the Grid

Where this vendor sits on the GridRouter Grid in each category it serves. No vendor pays for placement.

Placement in the GridRouter Grid by category
CategoryPlacementExecuteCoverageCallsReport
CRM & SequencersLeaders95.24641KView Grid

Endpoints

What Instantly does through GridRouter, and how each endpoint ranks against the other providers of that capability.

CapabilityRankPriceFill rateAccuracyp50Per verified hitLeader
Add lead to sequencesequencer.lead.add · n=41K
Grid Choice Verified Benchmarked BYOK
Rank 1of 2$0per call98.0%n/a380 ms$0Leads this board

Pricing

The price per call you pay through GridRouter, and what one verified hit costs once misses are counted. Failed calls are free; calls on your own vendor key are never metered.

CapabilityList priceUnitPer verified hitYour own key
Add lead to sequencesequencer.lead.add$0per call$0Free, not metered

Performance

Fill rate is the share of calls that found what was asked for; accuracy is the share of hits confirmed correct; latency is measured at the gateway. Trailing 30 days.

CapabilityFill rateAccuracySuccessp50p95Samples
Add lead to sequencesequencer.lead.add98.0%n/a99.4%380 ms1.2 s41K

Uptime

Share of calls without a vendor-side failure (errors, timeouts, capacity). Caller mistakes and refusals don't count against a vendor. Last 30 days, daily.

Sample dataIllustrative figures from the catalog's quality samples until live traffic is published

  • Instantlysequencer.lead.add
    Uptime
    98.7%
    p50 / p95
    380 ms1.2 s
    Calls
    36.7K

Apps

Public apps that identify themselves with X-Grid-App or HTTP-Referer and X-Title, over the last 30 days.

All apps

No public app has listed itself here yet. Add two headers to get yours ranked.

Activity

Routed calls per day over the last 30 days.

Calls per day by capability36.7K calls
  • Add lead to sequence
Calls per day by capability
DayAdd lead to sequence
Aug 28, 20261333
Aug 29, 2026614
Aug 30, 2026782
Aug 31, 20261189
Sep 1, 20261428
Sep 2, 20261359
Sep 3, 20261480
Sep 4, 20261640
Sep 5, 2026674
Sep 6, 2026636
Sep 7, 20261685
Sep 8, 20261651
Sep 9, 20261326
Sep 10, 20261260
Sep 11, 20261352
Sep 12, 2026743
Sep 13, 2026693
Sep 14, 20261631
Sep 15, 20261266
Sep 16, 20261387
Sep 17, 20261461
Sep 18, 20261467
Sep 19, 2026663
Sep 20, 2026768
Sep 21, 20261656
Sep 22, 20261341
Sep 23, 20261534
Sep 24, 20261256
Sep 25, 20261615
Sep 26, 2026800

API

One request shape for every vendor: call sequencer.lead.add and let GridRouter route it, or pin Instantly with the provider route.

Inputs for sequencer.lead.add
InputDescription
email*Lead address (required)
campaign_id*Target campaign (required)
Request
curl https://api.gridrouter.io/v1/call/sequencer.lead.add \
  -H "Authorization: Bearer $GRID_KEY" \
  -d '{"email":"dana@northwind.dev","campaign_id":"cmp_q4_devtools","route":"best_value"}'
Official specOpenAPI 3.1.0 · 255 operations Spec (YAML)Vendor's spec
Operations in the instantly spec
MethodPathSummaryParamsSource
GET/api/v2/account-campaign-mappings/{email}Get campaigns associated with an email3Spec
GET/api/v2/accountsList account12Spec
POST/api/v2/accountsCreate account0Spec
GET/api/v2/accounts/{email}Get account1Spec
PATCH/api/v2/accounts/{email}Patch account1Spec
DELETE/api/v2/accounts/{email}Delete account1Spec
POST/api/v2/accounts/warmup/enableEnable warmup for accounts0Spec
POST/api/v2/accounts/warmup/disableDisable warmup for accounts0Spec
POST/api/v2/accounts/warmup-analyticsGet warmup analytics0Spec
GET/api/v2/accounts/analytics/dailyGet daily account analytics3Spec
POST/api/v2/accounts/pausePause multiple accounts0Spec
POST/api/v2/accounts/{email}/pausePause an account1Spec
POST/api/v2/accounts/{email}/resumeResume a paused account1Spec
POST/api/v2/accounts/{email}/mark-fixedMark an account as fixed1Spec
GET/api/v2/accounts/ctd/statusGet custom tracking domain status1Spec
POST/api/v2/accounts/test/vitalsTest account vitals0Spec
POST/api/v2/accounts/moveMove accounts between workspaces0Spec
GET/api/v2/agent-itemsList AI agent items6Spec
POST/api/v2/agent-items/bulk-deleteBulk delete AI agent items0Spec
GET/api/v2/api-keysList api key2Spec
POST/api/v2/api-keysCreate api key0Spec
DELETE/api/v2/api-keys/{id}Delete api key1Spec
GET/api/v2/audit-logsList audit log6Spec
GET/api/v2/background-jobsList background job11Spec
GET/api/v2/background-jobs/{id}Get background job2Spec
GET/api/v2/block-lists-entriesList block list entry4Spec
POST/api/v2/block-lists-entriesCreate block list entry0Spec
DELETE/api/v2/block-lists-entriesDelete all block list entries2Spec
GET/api/v2/block-lists-entries/{id}Get block list entry1Spec
PATCH/api/v2/block-lists-entries/{id}Patch block list entry1Spec
DELETE/api/v2/block-lists-entries/{id}Delete block list entry1Spec
POST/api/v2/block-lists-entries/bulk-createBulk create block list entry0Spec
POST/api/v2/block-lists-entries/bulk-deleteBulk delete block list entry0Spec
GET/api/v2/block-lists-entries/downloadDownload all block list entries as CSV2Spec
GET/api/v2/campaignsList campaign8Spec
POST/api/v2/campaignsCreate campaign0Spec
POST/api/v2/campaigns/{id}/activateActivate(start), or resume a campaign1Spec
POST/api/v2/campaigns/{id}/pauseStop(or pause) a campaign1Spec
GET/api/v2/campaigns/{id}Get campaign1Spec
PATCH/api/v2/campaigns/{id}Patch campaign1Spec

Showing 40 of 255 operations; the full list is in the spec.

Rate limits

Published rate limits for instantly
LimitScopePlanEndpointBurst / concurrency
100 / secondaccountAllAll— / —
6,000 / minuteaccountAllAll— / —

On 429: Requests fail with 429 when any limit is reached. GridRouter never paces above these and backs off on 429, honoring Retry-After. Source, checked Sep 29, 2026

Instantly questions

How much does the Instantly API cost through GridRouter?

add lead to sequence at $0 per call, charged from prepaid credits at the provider's rate. Buying direct is Outreach Growth $47/mo.

Where does Instantly rank?

Instantly ranks first for add lead to sequence on Grid score, which weighs reliability, fill, accuracy, speed and cost per verified result.

Can I bring my own Instantly key?

Yes. Add it once in the vault; calls on your key are never metered and still count toward the quality scores.

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