Data verified September 25, 2026
Right Inbox vs Success.ai
Right Inbox is cheaper at entry level for one seat (cheapest paid plan): $9.95 per month against $99. Right Inbox wins 3 of our 8 comparison points, Success.ai wins 0.
Data verified · Sources: Right Inbox pricing, Success.ai pricing, Methodology
Verdict
Who wins, point by point
| Dimension | Right Inbox | Success.ai | Winner |
|---|---|---|---|
| Cheapest paid plan for 1 seat (per month) | $9.95 (Pro, billed monthly) | $99 (Starter, billed monthly) | Right Inbox |
| Cheapest paid plan for 5 seats (per month) | $49.75 (Pro, billed monthly) | $99 (Starter, billed monthly) | Right Inbox |
| Free plan | Yes: Free | No | Right Inbox |
| Email sender limit | Not published | Unlimited | Not comparable |
| Warmup included | Not published | Yes | Not comparable |
| Email verification | Not published | Included | Not comparable |
| CRM | Not published | Included | Not comparable |
| G2 rating | Not available | 4.9 (258 reviews, 2026-01-08) | Not comparable |
The differences
What the numbers say
For 1 seat, Right Inbox's cheapest paid plan costs $9.95 per month against $99.
For 5 seats, Right Inbox's cheapest paid plan costs $49.75 per month against $99.
Right Inbox has a free plan; Success.ai does not.
We cannot compare email sender limit, warmup included, email verification, CRM, G2 rating, because at least one of the two vendors does not publish it.
Every plan
Plan by plan, side by side
Right Inbox: 3 plans
| Free | Pro | Teams | |
|---|---|---|---|
| Price, billed monthly | $0/mo | $9.95/mo | $19.95/mo |
| Price, billed annually (per month) | $0/mo | $7.95/mo | $16.95/mo |
Sources: www.rightinbox.com/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 Right Inbox if…
- Its pricing page targets Gmail users, 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), free plan.
Pick Success.ai if…
- Its pricing page targets B2B sales teams, enterprise teams, which Right Inbox's does not.
You ask, we answer
Common questions
Is Right Inbox cheaper than Success.ai?
Yes at entry level: $9.95 vs $99 per month for one seat.
How much warmup do Right Inbox and Success.ai include?
Right Inbox: not published. Success.ai: yes.
How many email senders can I connect to Right Inbox or Success.ai?
Right Inbox: not published. Success.ai: unlimited.
Do Right Inbox and Success.ai include email verification?
Right Inbox: not published. Success.ai: included.
Do Right Inbox and Success.ai have a built-in CRM?
Right Inbox: not published. Success.ai: included.
Which is rated higher on G2, Right Inbox or Success.ai?
Right Inbox: Not available. Success.ai: 4.9 (258 reviews, 2026-01-08).