Overview
Researched from the vendor's own pages; every fact links to its source and the day we checked it.
Cold email infrastructure with unlimited mailboxes, warm-up and campaigns; REST API with api_key query parameter and webhooks.
Company
- Legal name
- Not confirmed
- Headquarters
- Not confirmed
- Founded
- Not confirmed
- Employees
- Not confirmed
- Ownership
- Not confirmed
- Kind
- Not confirmed
- Website
- Not confirmed
API
Verified- Access
- Self-serve API
- Style
- Not confirmed
- Auth
- API key (query)
- Base URL
https://server.smartlead.ai/api/v1- Features
- Bulk —Async —Webhooks YesMCP —Sandbox —
- Rate limit
- Varies by subscription plan; 429 when exceeded
- Docs
- Reference
Pricing
- Model
- subscription
- List prices
- Base $39/mo, 2,000 contacts, 6,000 sends
- Pro $94/mo, 30,000 contacts, 90,000 sends
- 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)
- Smartlead pricingchecked Sep 29, 2026
- Smartlead APIchecked Sep 29, 2026
Placement in the Grid
Where this vendor sits on the GridRouter Grid in each category it serves. No vendor pays for placement.
| Category | Placement | Execute | Coverage | Calls | Report |
|---|---|---|---|---|---|
| CRM & Sequencers | Specialists | 88.8 | 40 | 26K | View Grid |
Endpoints
What Smartlead does through GridRouter, and how each endpoint ranks against the other providers of that capability.
| Capability | Rank | Price | Fill rate | Accuracy | p50 | Per verified hit | Leader |
|---|---|---|---|---|---|---|---|
| Add lead to sequencesequencer.lead.add · n=26K Verified Benchmarked BYOK | Rank 2of 2 | $0per call | 97.0% | n/a | 520 ms | $0 |  Instantly |
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.
| Capability | List price | Unit | Per verified hit | Your own key |
|---|---|---|---|---|
| Add lead to sequencesequencer.lead.add | $0 | per call | $0 | Free, 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.
| Capability | Fill rate | Accuracy | Success | p50 | p95 | Samples |
|---|---|---|---|---|---|---|
| Add lead to sequencesequencer.lead.add | 97.0% | n/a | 99.0% | 520 ms | 1.7 s | 26K |
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
Smartleadsequencer.lead.add- Uptime
- 98.8%
- p50 / p95
- 520 ms1.7 s
- Calls
- 24.2K
Apps
Public apps that identify themselves with X-Grid-App or HTTP-Referer and X-Title, over the last 30 days.
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.
- Add lead to sequence
| Day | Add lead to sequence |
|---|---|
| Aug 28, 2026 | 1014 |
| Aug 29, 2026 | 409 |
| Aug 30, 2026 | 402 |
| Aug 31, 2026 | 953 |
| Sep 1, 2026 | 1028 |
| Sep 2, 2026 | 792 |
| Sep 3, 2026 | 825 |
| Sep 4, 2026 | 1114 |
| Sep 5, 2026 | 529 |
| Sep 6, 2026 | 427 |
| Sep 7, 2026 | 913 |
| Sep 8, 2026 | 902 |
| Sep 9, 2026 | 1006 |
| Sep 10, 2026 | 945 |
| Sep 11, 2026 | 915 |
| Sep 12, 2026 | 512 |
| Sep 13, 2026 | 446 |
| Sep 14, 2026 | 1054 |
| Sep 15, 2026 | 943 |
| Sep 16, 2026 | 1028 |
| Sep 17, 2026 | 979 |
| Sep 18, 2026 | 864 |
| Sep 19, 2026 | 485 |
| Sep 20, 2026 | 562 |
| Sep 21, 2026 | 877 |
| Sep 22, 2026 | 1065 |
| Sep 23, 2026 | 845 |
| Sep 24, 2026 | 976 |
| Sep 25, 2026 | 953 |
| Sep 26, 2026 | 478 |
API
One request shape for every vendor: call sequencer.lead.add and let GridRouter route it, or pin Smartlead with the provider route.
| Input | Description |
|---|---|
| email* | Lead address (required) |
| campaign_id* | Target campaign (required) |
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"}'Rebuilt from the vendor's public docs, only what the pages show. Each operation links the page it came from; response shapes the docs don't spell out are left empty rather than guessed.
| Method | Path | Summary | Params | Source |
|---|---|---|---|---|
| POST | /campaigns/{campaign_id}/leads | Add leads to campaign | 1 | Docs |
Rate limits
Varies by subscription plan; 429 when exceeded Without a published limit GridRouter paces conservatively (1 request per second).
Smartlead questions
How much does the Smartlead API cost through GridRouter?
add lead to sequence at $0 per call, charged from prepaid credits at the provider's rate. Buying direct is Base $39/mo; Pro $94/mo.
Where does Smartlead rank?
Smartlead doesn't rank first for any capability this month; see each table below for where it leads on individual metrics.
Can I bring my own Smartlead key?
Yes. Add it once in the vault; calls on your key are never metered and still count toward the quality scores.