The verdict
On the data we hold, Apollo comes out ahead. Here is why, point by point.
What the data says
- Both cover 2 of the 2 features we compared.
- Only Apollo has a free plan to start on.
- Warmup Inbox starts lower, at $15/mo against $49/mo.
- Only Apollo has an MCP server, so an AI employee can work in it directly.
- In our Outbound ranking, Apollo places 2 and Warmup Inbox 6 of 33.
Side by side
| 6 points compared | ||
|---|---|---|
| Starts at | $49/mo | $15/mo |
| Free plan | Yes | No |
| API | Yes | Yes |
| MCP server | Yes | No |
| Built-in email warmup | Yes | Yes |
| Built-in outreach (sequences/dialer) | Yes | Yes |
| Links |
Plans and pricing
Apollo
- FreeFree forever with limited credits; connect Gmail accounts only.Free
- BasicPer seat per month billed monthly; email sequencing and core integrations for individual sellers.$49/mo/seat
- ProfessionalPer seat per month billed monthly; higher credit limits, AI features, call recording and advanced CRM integrations.$99/mo/seat
Warmup Inbox
- BasicPer inbox per month; 75 warm-up messages a day. Volume discounts as you add inboxes.$15/mo
- ProPer inbox per month; 250 warm-up messages a day plus custom templates and scheduling.$49/mo
- MaxPer inbox per month; 1,000 warm-up messages a day plus API access and premium support.$79/mo
Prices as the vendors list them. They change often; the final price is on their sites.
Who each is for
Choose Apollo if…
Lean B2B sales teams and founders running outbound who want a contact database, email sequences and a dialler in one place instead of three separate subscriptions.
Choose Warmup Inbox if…
Sales, SDR and agency teams about to send cold email from new mailboxes, who need those mailboxes warmed up and monitored so campaigns reach the primary inbox.
Other options worth a look
Tool·Client acquisitionRuns multichannel cold outreach with built-in email warmup, lead database, and deliverability scoring.Outbound
From $55/mo yearlyAffiliate link
Tool·Client acquisitionSends high-volume cold email across multiple mailboxes with automated warmup and a unified reply inbox.Outbound
From $85/mo yearlyAffiliate link
Tool·Client acquisitionAutomates outreach across email, LinkedIn, calls and SMS to coordinate your sales prospecting in one place.Outbound
From $49/mo yearlyAffiliate link
Tool·Client acquisitionRun cold email outreach at scale with unlimited mailboxes, warm-up automation and lead verification.Outbound
From $32/mo yearly- Tool·Client acquisitionIdentifies website visitors by company and provides EU-based B2B contact data with buyer intent signals.
Outbound
From €79/mo yearlyFree planAffiliate link
Tool·Client acquisitionFinds and verifies professional email addresses and sends cold email sequences from one workspace.Outbound
From €34/mo yearlyFree plan