Data verified September 25, 2026
Smartlead vs Success.ai
Smartlead is cheaper at entry level for one seat (cheapest paid plan): $39 per month against $99. For a 50-inbox stack the full monthly cost is $681.12 with Smartlead and $537.47 with Success.ai. Smartlead wins 2 of our 8 comparison points, Success.ai wins 2, 3 are ties.
Data verified · Sources: Smartlead pricing, Success.ai pricing, Methodology
Verdict
Who wins, point by point
| Dimension | Smartlead | Success.ai | Winner |
|---|---|---|---|
| Cheapest paid plan for 1 seat (per month) | $39 (Base, billed monthly) | $99 (Starter, billed monthly) | Smartlead |
| Cheapest paid plan for 5 seats (per month) | $39 (Base, billed monthly) | $99 (Starter, billed monthly) | Smartlead |
| Free plan | No | No | Tie |
| Email sender limit | Unlimited | Unlimited | Tie |
| Warmup included | Yes | Yes | Tie |
| Email verification | Add-on | Included | Success.ai |
| CRM | Not published | Included | Not comparable |
| G2 rating | 4.5 (408 reviews, 2026-07-26) | 4.9 (258 reviews, 2026-01-08) | Success.ai |
The differences
What the numbers say
For 1 seat, Smartlead's cheapest paid plan costs $39 per month against $99.
For 5 seats, Smartlead's cheapest paid plan costs $39 per month against $99.
Success.ai includes email verification in its plans; Smartlead does not include it.
Success.ai rates 4.9 on G2 against 4.5.
We cannot compare CRM, because at least one of the two vendors does not publish it.
Across a full 50-inbox stack (mailboxes, domains, warmup, verification, CRM), Success.ai costs $143.65 less per month.
$681.12
$537.47
Every plan
Plan by plan, side by side
Smartlead: 4 plans
| Base | Pro | Unlimited Smart | Unlimited Prime | |
|---|---|---|---|---|
| Price, billed monthly | $39/mo | $94/mo | $174/mo | $379/mo |
| Price, billed annually (per month) | $32.50/mo | $78.30/mo | $144.50/mo | $314.60/mo |
| Email sender limit | Unlimited | Unlimited | Unlimited | Unlimited |
| Warmup: accounts warmed at once | Yes | Yes | Yes | Yes |
| Emails per month | 6,000 | 90,000 | 150,000 | 500,000 |
Sources: www.smartlead.ai/pricing
Success.ai: 3 plans
| Starter | Growth | Enterprise | |
|---|---|---|---|
| Price, billed monthly | $99/mo | $199/mo | Custom |
| Price, billed annually (per month) | $74/mo | $149/mo | Custom |
| Warmup: accounts warmed at once | Yes | Yes | Yes |
| Emails per month | 50,000 | 150,000 | Unlimited |
| Lead-search credits per month | 6,000 | 10,000 | Not published |
| CRM | Yes | Yes | Yes |
| Unibox (shared reply inbox) | Yes | Yes | Yes |
Sources: www.success.ai/pricing
When to pick which
Pick Smartlead if…
- Its pricing page targets agencies, high-volume sending, which Success.ai's does not.
- It wins on cheapest paid plan for 1 seat (per month), cheapest paid plan for 5 seats (per month).
Pick Success.ai if…
- Its pricing page targets solo founders, enterprise teams, which Smartlead's does not.
- It wins on email verification, G2 rating.
You ask, we answer
Common questions
Is Smartlead cheaper than Success.ai?
Yes at entry level: $39 vs $99 per month for one seat.
How much warmup do Smartlead and Success.ai include?
Smartlead: yes. Success.ai: yes.
How many email senders can I connect to Smartlead or Success.ai?
Smartlead: unlimited. Success.ai: unlimited.
Do Smartlead and Success.ai include email verification?
Smartlead: add-on. Success.ai: included.
Do Smartlead and Success.ai have a built-in CRM?
Smartlead: not published. Success.ai: included.
Which is rated higher on G2, Smartlead or Success.ai?
Smartlead: 4.5 (408 reviews, 2026-07-26). Success.ai: 4.9 (258 reviews, 2026-01-08).