The verdict
On the data we hold, Instantly comes out ahead. Here is why, point by point.
What the data says
- Both cover 1 of the 1 features we compared.
- Warmy.io starts lower, at $49/mo against $85/mo.
- Only Instantly has an MCP server, so an AI employee can work in it directly.
- In our Outbound ranking, Instantly places 3 and Warmy.io 13 of 33.
Side by side
| 5 points compared | ||
|---|---|---|
| Starts at | $85/mo | $49/mo |
| Free plan | No | No |
| API | Yes | Yes |
| MCP server | Yes | No |
| Built-in email warmup | Yes | Yes |
| Links |
Plans and pricing
Instantly
- StarterBundle with 5,000 emails per month, 1,000 uploaded contacts and 1,500 credits.$94/mo
- ScaleBundle with 100,000 emails per month, 25,000 uploaded contacts and 5,000 credits.$194/mo
- AgencyBundle with 500,000 emails per month, 100,000 uploaded contacts and 10,000 credits.$555/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 Instantly if…
B2B founders, agencies and outbound teams that run cold email at volume across many mailboxes and need warmup, rotation and one reply inbox without building the sending infrastructure themselves.
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 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 acquisitionBuilds sender reputation for new email accounts by warming them through a network of real inboxes.Outbound
From $15/mo- 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