Email APIs · side by side
Instantly vs Smartlead
Compare Instantly, Smartlead by sending volume, delivery webhooks, inbound email, domain limits and retention.
Email APIs pricing calculator
10K
Instantly
Custom / not listed
Custom / unlisted usage pricing · 10K leads
Smartlead
$94 / mo
Pro · 10K leads
Listed USD plan fees and tracked usage only. Unlisted compute, transfer, extras, taxes and contract terms are excluded. Custom or unsupported plan usage is not estimated.
Email APIs overview & pricing
| Email APIs | Instantly | Smartlead |
|---|---|---|
| Provider | Instantly | Smartlead |
| Billing unit | leads | leads |
| Plan at selected usage | Custom / unlisted usage pricing | Pro |
| Monthly estimate | Custom / not listed | $94/mo |
| Workload | 10K leads | 10K leads |
| Free access | Trial | Trial |
| Published plans | Bundle - Starter (Monthly), Bundle - Starter (Yearly), Bundle - Scale (Monthly), Bundle - Scale (Yearly), Bundle - Agency (Monthly), Bundle - Agency (Yearly), Outreach - Growth (Monthly), Outreach - Growth (Yearly), Outreach - Hypergrowth (Monthly), Outreach - Hypergrowth (Yearly), Outreach - Light Speed (Monthly), Outreach - Light Speed (Yearly) | Base, Pro, Unlimited Smart, Unlimited Prime, SmartServices Growth, SmartServices Scale |
| Prices checked | 2026-10-08 | 2026-10-08 |
Provider
- Instantly
- Instantly
- Smartlead
- Smartlead
Billing unit
- Instantly
- leads
- Smartlead
- leads
Plan at selected usage
- Instantly
- Custom / unlisted usage pricing
- Smartlead
- Pro
Monthly estimate
- Instantly
- Custom / not listed
- Smartlead
- $94/mo
Workload
- Instantly
- 10K leads
- Smartlead
- 10K leads
Free access
- Instantly
- Trial
- Smartlead
- Trial
Published plans
- Instantly
- Bundle - Starter (Monthly), Bundle - Starter (Yearly), Bundle - Scale (Monthly), Bundle - Scale (Yearly), Bundle - Agency (Monthly), Bundle - Agency (Yearly), Outreach - Growth (Monthly), Outreach - Growth (Yearly), Outreach - Hypergrowth (Monthly), Outreach - Hypergrowth (Yearly), Outreach - Light Speed (Monthly), Outreach - Light Speed (Yearly)
- Smartlead
- Base, Pro, Unlimited Smart, Unlimited Prime, SmartServices Growth, SmartServices Scale
Prices checked
- Instantly
- 2026-10-08
- Smartlead
- 2026-10-08
Email APIs monthly cost
Instantly: Not pricedSmartlead: $94
Cost by leads
Cost curve data
| leads | Instantly | Smartlead |
|---|---|---|
| 0 | Not priced | $39 |
| 2,500 | Not priced | $94 |
| 5,000 | Not priced | $94 |
| 10K | Not priced | $94 |
| 20K | Not priced | $94 |
| 50K | Not priced | Not priced |
| 100K | Not priced | Not priced |
0
- Instantly
- Not priced
- Smartlead
- $39
2,500
- Instantly
- Not priced
- Smartlead
- $94
5,000
- Instantly
- Not priced
- Smartlead
- $94
10K
- Instantly
- Not priced
- Smartlead
- $94
20K
- Instantly
- Not priced
- Smartlead
- $94
50K
- Instantly
- Not priced
- Smartlead
- Not priced
100K
- Instantly
- Not priced
- Smartlead
- Not priced
Email APIs feature comparison
| Email APIs | Instantly | Smartlead |
|---|---|---|
| Sending methods | Not listed | Not listed |
| Inbound processing | Not listed | Not listed |
| Sending domains | Not listed | Not listed |
| Activity retention | Not listed | Not listed |
| Webhooks & events | Not listed | Not listed |
| Dedicated IP | Not listed | Not listed |
| Single sign-on | Not listed | Not listed |
| Support | Not listed | Not listed |
| Uploaded contacts | Not listed | Not listed |
| Emails per month | Not listed | Not listed |
| Unlimited email accounts | Not listed | Not listed |
| Unlimited email warmup | Not listed | Not listed |
| Advanced warmup capabilities | Not listed | Not listed |
| Invite team members | Not listed | Not listed |
| Advanced sequences | Not listed | Not listed |
| Advanced scheduling | Not listed | Not listed |
| Email & account analytics | Not listed | Not listed |
| Global block list | Not listed | Not listed |
| A/Z Testing | Not listed | Not listed |
| Reputation protection & bounce detection | Not listed | Not listed |
| API, webhooks, and integrations | Not listed | Not listed |
| Unibox | Not listed | Not listed |
| General support tickets | Not listed | Not listed |
| Priority support | Not listed | Not listed |
| Ideal decision makers identified and mapped to your ICP | Not listed | Not listed |
| Qualified lead list built and maintained | Not listed | Not listed |
| 10+ intent signals layered into targeting | Not listed | Not listed |
| Website visitor intent monitoring | Not listed | Not listed |
| Monthly strategy sessions | Not listed | Not listed |
| Ongoing strategy calls as campaigns evolve | Not listed | Not listed |
| Done-for-you email campaigns: built, launched, and managed | Not listed | Not listed |
| Cold email outreach copy crafted for your offer | Not listed | Not listed |
| AI-powered personalization at scale | Not listed | Not listed |
| A/B testing across subject lines, angles, and sequences | Not listed | Not listed |
| Continuously updating campaigns with ongoing optimization | Not listed | Not listed |
| Pre-warmed mailbox installation | Not listed | Not listed |
| Email inbox and domain setup | Not listed | Not listed |
| Deliverability monitoring and active management | Not listed | Not listed |
| 24/7 inbox management | Not listed | Not listed |
| Dedicated GTM engineer | Not listed | Not listed |
| Dedicated one-on-one onboarding call | Not listed | Not listed |
| Advanced guides and tutorials | Not listed | Not listed |
| Easy-to-use client dashboard | Not listed | Not listed |
| Advanced campaign metrics | Not listed | Not listed |
| CRM integration and tracking | Not listed | Not listed |
Sending methods
- Instantly
- Not listed
- Smartlead
- Not listed
Inbound processing
- Instantly
- Not listed
- Smartlead
- Not listed
Sending domains
- Instantly
- Not listed
- Smartlead
- Not listed
Activity retention
- Instantly
- Not listed
- Smartlead
- Not listed
Webhooks & events
- Instantly
- Not listed
- Smartlead
- Not listed
Dedicated IP
- Instantly
- Not listed
- Smartlead
- Not listed
Single sign-on
- Instantly
- Not listed
- Smartlead
- Not listed
Support
- Instantly
- Not listed
- Smartlead
- Not listed
Uploaded contacts
- Instantly
- Not listed
- Smartlead
- Not listed
Emails per month
- Instantly
- Not listed
- Smartlead
- Not listed
Unlimited email accounts
- Instantly
- Not listed
- Smartlead
- Not listed
Unlimited email warmup
- Instantly
- Not listed
- Smartlead
- Not listed
Advanced warmup capabilities
- Instantly
- Not listed
- Smartlead
- Not listed
Invite team members
- Instantly
- Not listed
- Smartlead
- Not listed
Advanced sequences
- Instantly
- Not listed
- Smartlead
- Not listed
Advanced scheduling
- Instantly
- Not listed
- Smartlead
- Not listed
Email & account analytics
- Instantly
- Not listed
- Smartlead
- Not listed
Global block list
- Instantly
- Not listed
- Smartlead
- Not listed
A/Z Testing
- Instantly
- Not listed
- Smartlead
- Not listed
Reputation protection & bounce detection
- Instantly
- Not listed
- Smartlead
- Not listed
API, webhooks, and integrations
- Instantly
- Not listed
- Smartlead
- Not listed
Unibox
- Instantly
- Not listed
- Smartlead
- Not listed
General support tickets
- Instantly
- Not listed
- Smartlead
- Not listed
Priority support
- Instantly
- Not listed
- Smartlead
- Not listed
Ideal decision makers identified and mapped to your ICP
- Instantly
- Not listed
- Smartlead
- Not listed
Qualified lead list built and maintained
- Instantly
- Not listed
- Smartlead
- Not listed
10+ intent signals layered into targeting
- Instantly
- Not listed
- Smartlead
- Not listed
Website visitor intent monitoring
- Instantly
- Not listed
- Smartlead
- Not listed
Monthly strategy sessions
- Instantly
- Not listed
- Smartlead
- Not listed
Ongoing strategy calls as campaigns evolve
- Instantly
- Not listed
- Smartlead
- Not listed
Done-for-you email campaigns: built, launched, and managed
- Instantly
- Not listed
- Smartlead
- Not listed
Cold email outreach copy crafted for your offer
- Instantly
- Not listed
- Smartlead
- Not listed
AI-powered personalization at scale
- Instantly
- Not listed
- Smartlead
- Not listed
A/B testing across subject lines, angles, and sequences
- Instantly
- Not listed
- Smartlead
- Not listed
Continuously updating campaigns with ongoing optimization
- Instantly
- Not listed
- Smartlead
- Not listed
Pre-warmed mailbox installation
- Instantly
- Not listed
- Smartlead
- Not listed
Email inbox and domain setup
- Instantly
- Not listed
- Smartlead
- Not listed
Deliverability monitoring and active management
- Instantly
- Not listed
- Smartlead
- Not listed
24/7 inbox management
- Instantly
- Not listed
- Smartlead
- Not listed
Dedicated GTM engineer
- Instantly
- Not listed
- Smartlead
- Not listed
Dedicated one-on-one onboarding call
- Instantly
- Not listed
- Smartlead
- Not listed
Advanced guides and tutorials
- Instantly
- Not listed
- Smartlead
- Not listed
Easy-to-use client dashboard
- Instantly
- Not listed
- Smartlead
- Not listed
Advanced campaign metrics
- Instantly
- Not listed
- Smartlead
- Not listed
CRM integration and tracking
- Instantly
- Not listed
- Smartlead
- Not listed
Showing 15 of 45
Which email providers fit your needs?
Smartlead features & plan notes
- Multiple sending accounts
- Lead routing
- Master inbox
- 30,000 contacts
- 90,000 Email sends
- 30,000 Verified Emails
- Warmup Pool: Growth tier (Add-on $59/month)
- Unlimited email accounts
- CRM Access: Add-on @$39
- Clients / Workspace: Add-on @$29
How to compare email providers
Separate transactional delivery from campaigns, outreach and agent inboxes. Compare monthly sends and daily caps; contacts, seats and inboxes are not sending allowances. Budget separately for dedicated IPs, validation and attachments.
Browse Email APIs pricing