The verdict
On the data we hold, Warmup Inbox comes out ahead. Here is why, point by point.
What the data says
- Warmup Inbox covers more of the features we compared: 5 of 5, against 4.
- Warmup Inbox starts lower, at $15/mo against $49/mo.
- In our Outbound ranking, Warmup Inbox places 6 and Warmy.io 13 of 33.
Side by side
| 9 points compared | ||
|---|---|---|
| Starts at | $15/mo | $49/mo |
| Free plan | No | No |
| API | Yes | Yes |
| MCP server | No | No |
| Automated warmup network | Yes | Yes |
| Built-in email warmup | Yes | Yes |
| Built-in outreach/sequences | Yes | No |
| Inbox placement testing | Yes | Yes |
| Sender reputation & blacklist monitoring | Yes | Yes |
| Links |
Plans and pricing
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
Warmy.io
- B2B SenderPlans start from $49 per month; price depends on warm-up volume. Reaches corporate inboxes.$49/mo
- B2C SenderPlans start from $49 per month; price depends on warm-up volume. Reaches consumer inboxes.$49/mo
Prices as the vendors list them. They change often; the final price is on their sites.
Who each is for
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.
Choose Warmy.io if…
B2B and B2C senders, agencies and ecommerce teams sending cold or marketing email at volume who want domain warm-up, deliverability monitoring and authentication checks in one tool.
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 acquisitionFind B2B prospects and run email and phone outreach campaigns from one unified platform.Outbound
From $49/moFree planAffiliate 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