Data verified September 25, 2026
GMass vs Success.ai
GMass is cheaper at entry level for one seat (cheapest paid plan): $29.95 per month against $99. GMass wins 1 of our 8 comparison points, Success.ai wins 2, 1 is a tie.
Data verified · Sources: GMass pricing, Success.ai pricing, Methodology
Verdict
Who wins, point by point
| Dimension | GMass | Success.ai | Winner |
|---|---|---|---|
| Cheapest paid plan for 1 seat (per month) | $29.95 (Standard, billed monthly) | $99 (Starter, billed monthly) | GMass |
| Cheapest paid plan for 5 seats (per month) | $149.75 (Standard, billed monthly) | $99 (Starter, billed monthly) | Success.ai |
| Free plan | Not published | No | Not comparable |
| Email sender limit | Not published | Unlimited | Not comparable |
| Warmup included | Not published | Yes | Not comparable |
| Email verification | Included | Included | Tie |
| CRM | Not published | Included | Not comparable |
| G2 rating | 4.8 (1,265 reviews, 2026-02-01) | 4.9 (258 reviews, 2026-01-08) | Success.ai |
The differences
What the numbers say
For 1 seat, GMass's cheapest paid plan costs $29.95 per month against $99.
For 5 seats, Success.ai's cheapest paid plan costs $99 per month against $149.75.
Success.ai rates 4.9 on G2 against 4.8.
We cannot compare free plan, email sender limit, warmup included, CRM, because at least one of the two vendors does not publish it.
Every plan
Plan by plan, side by side
GMass: 8 plans
| Standard | Premium | Professional | Team (Premium, 5 users) | Team (Premium, 10 users) | Team (Premium, 25 users) | Team (Premium, 50 users) | Team (Premium, 100 users) | |
|---|---|---|---|---|---|---|---|---|
| Price, billed monthly | $29.95/mo | $39.95/mo | $59.95/mo | $175/mo | $295/mo | $725/mo | $1,350/mo | $2,200/mo |
| Price, billed annually (per month) | $20/mo | $29/mo | $49/mo | $145/mo | $245/mo | $604/mo | $1,125/mo | $1,833/mo |
| Emails per month | Unlimited | Unlimited | Unlimited | Unlimited | Unlimited | Unlimited | Unlimited | Unlimited |
| Team seats | 1 | 1 | 1 | 5 | 10 | 25 | 50 | 100 |
Sources: www.gmass.co/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 GMass if…
- Its pricing page targets Gmail users, which Success.ai's does not.
- It wins on cheapest paid plan for 1 seat (per month).
Pick Success.ai if…
- Its pricing page targets solo founders, B2B sales teams, enterprise teams, which GMass's does not.
- It wins on cheapest paid plan for 5 seats (per month), G2 rating.
You ask, we answer
Common questions
Is GMass cheaper than Success.ai?
Yes at entry level: $29.95 vs $99 per month for one seat.
How much warmup do GMass and Success.ai include?
GMass: not published. Success.ai: yes.
How many email senders can I connect to GMass or Success.ai?
GMass: not published. Success.ai: unlimited.
Do GMass and Success.ai include email verification?
GMass: included. Success.ai: included.
Do GMass and Success.ai have a built-in CRM?
GMass: not published. Success.ai: included.
Which is rated higher on G2, GMass or Success.ai?
GMass: 4.8 (1,265 reviews, 2026-02-01). Success.ai: 4.9 (258 reviews, 2026-01-08).