Warmup Inbox
Email warmupWarmup Inbox is a standalone warmup tool. Warmup means sending small, safe emails so a new inbox looks normal before cold email.
The verdict
Warmup Inbox makes sense for inboxes you send from outside a cold email tool. If you send campaigns from Instantly or Smartlead, warmup is already in your plan, so a second bill buys the same job twice.
At 20 inboxes, the price is $195 a month billed yearly.
Best for
One or two inboxes you send from by hand, outside any sequencer.
Not for
Skip it if your inboxes already run through Instantly or Smartlead, which warm them as part of the plan.
Pricing truth
From $15 an inbox yearly. Basic is $15 per inbox a month billed yearly, or $19 monthly, for 75 warmup emails a day. Pro is $49 yearly or $59 monthly for 250 a day. Max is $79 yearly or $99 monthly for 1,000 a day. At 20 inboxes, the price is $195 a month billed yearly. Checked October 13, 2026.
When we use it
- Warm a founder's main inbox that you send from by hand.
- Warm a CRM sender that never runs through a cold email tool.
- Keep a reply inbox healthy when it sits outside your sequencer, the tool that sends your email steps.
- Warm a few inboxes at 75 warmup emails a day each on Basic.
How to wire it
- List the inboxes you send from outside your cold email tool. Only those need Warmup Inbox.
- Start on Basic, which sends 75 warmup emails a day per inbox.
- Pick yearly billing if you will keep it, because Basic drops from $19 to $15 per inbox.
- Before a real send, mail a few inboxes you own and check where it lands.
Margin notes
- The math: 20 inboxes at the $15 list price is 20 × $15 = $300. At 20 inboxes, the price is $195 a month billed yearly.
- The math: $195 × 12 = $2,340 a year for 20 inboxes on Basic billed yearly.
- A green warmup score does not prove your campaign lands in the inbox. Run a seed test, a real send to inboxes you own.
- Instantly Growth at $47 and Smartlead Base at $39 include warmup for every inbox you connect.
- Pro and Max raise the daily warmup emails per inbox.