In this chapter
Email warmup pricing in 2026 runs from free for one mailbox to several hundred dollars a month for 25, and the pricing model matters more than the entry price. Per-mailbox tools such as Warmup Inbox ($19 per inbox) and Mailreach ($19.50) look cheap for one inbox and grow with every inbox. Flat tools such as Warmerly ($19 a month for 5 mailboxes) and Smartlead ($39, unlimited accounts) do not.
Every price below was read from the vendor's own pricing page on October 13, 2026, at monthly billing unless the vendor only shows a yearly price. The 1, 5 and 25 mailbox columns are worked out only from those published prices. Where a vendor quotes instead of publishing a price, or its page does not show a figure, the table says so rather than guessing. Prices change often, so check the vendor before you buy.
Email warmup pricing comparison: 13 tools at 1, 5 and 25 mailboxes
| Tool | Entry price | Pricing model | 1 mailbox | 5 mailboxes | 25 mailboxes |
|---|---|---|---|---|---|
| Warmerly | Free, then Starter | Flat per plan, campaign sends included | $0 (Free) | $19 (Starter) | $49 (Growth) |
| Warmup Inbox | $19 per inbox ($15 yearly) | Per inbox, rate falls with volume | $19 | $90 ($18 each) | $300 ($12 each) |
| TrulyInbox | Free, then $29 | Unlimited accounts, priced by daily warmup volume | $0 (Free, 10 a day) | $29; vendor suggests $99 tier | $29; vendor suggests $199 tier |
| Mailivery | $29 | Unlimited accounts, shared daily volume | $29 | $29 | $29 (volume shared by all 25) |
| Mailreach | $19.50 per mailbox | Per mailbox | $19.50 | $97.50 at list rate | $487.50 at list rate |
| Lemwarm | $29 per email address | Per mailbox | $29 | $145 | $725 at list rate |
| Warmbox | $19 (1 inbox) | Tiers by inbox count | $19 | $159 (6-inbox tier) | Custom quote |
| Mailwarm | $69, billed yearly | Tiers by mailbox count | $69 | $479 (10-mailbox tier) | Custom quote |
| Warmy.io | From $49 | Volume-based, quoted | From $49 | Not published | Not published |
| Warmforge | $10 per slot, billed quarterly | Per mailbox slot | $10 | $50 | $250 |
| e-warmup | Free, then $49 | Tiers by mailbox count | $0 (Free, 10 a day) | $49 | $189 (40-mailbox tier) |
| Instantly | $47 (Growth) | Unlimited accounts, capped sends | $47 | $47 | $47 (5,000 emails a month) |
| Smartlead | $39 (Base) | Unlimited accounts, capped sends | $39 | $39 | $39 (6,000 emails a month) |
Cheapest email warmup tool for 1 mailbox (the freelancer case)
For one mailbox, the cheapest email warmup is free. Warmerly, TrulyInbox and e-warmup each have a free plan for one mailbox with no card and no time limit. TrulyInbox and e-warmup cap free warmup at 10 emails a day; Warmerly does not count warmup emails, but its Free plan allows 100 campaign emails a month. The full breakdown of those free plans is on our free email warmup tools page.
If you would rather pay for one standalone mailbox, Warmforge is the lowest published price at $10 a slot, billed quarterly. Warmup Inbox is $19 a month or $15 billed yearly, Warmbox's Solo plan is $19 and Mailreach is $19.50. A freelancer who also wants to send campaigns from the same tool should compare against Warmerly's Starter plan, which covers 5 mailboxes and campaign sending for no more than most single-inbox warmup plans cost.
Cheapest email warmup for 5 mailboxes
At five mailboxes the per-inbox tools start to hurt. Warmup Inbox comes to $90 a month, Mailreach $97.50 and Lemwarm $145. Warmerly Starter is $19 a month for all five, which makes it the lowest published price at this size. TrulyInbox and Mailivery come next at $29, but that price spreads one daily warmup volume across every connected account, and TrulyInbox suggests its $99 Growth tier for this many inboxes. Smartlead ($39) and Instantly ($47) cost a little more and bundle a full campaign sender.
Cheapest email warmup for 25 mailboxes
At 25 mailboxes the cheapest sticker prices are TrulyInbox's and Mailivery's $29 Starter plans, but each shares one daily warmup volume across all 25 mailboxes, so every inbox gets very little. Smartlead's $39 Base plan and Instantly's $47 Growth plan connect unlimited accounts with warmup included and cap your monthly sends instead. Warmerly Growth is $49 for 25 mailboxes with campaign sends not metered. The per-mailbox tools are far higher: Warmforge $250, Warmup Inbox $300, Mailreach $487.50 at list rate and Lemwarm $725 at list rate.
What drives email warmup pricing
- Pricing model: per-mailbox tools multiply by every inbox; flat and volume-based tools do not. This is the single biggest factor past two or three mailboxes.
- Warmup volume: tools that connect unlimited accounts usually cap total warmup emails a day, so adding mailboxes thins each one's warmup.
- Send caps on bundled tools: Instantly and Smartlead include warmup, but their plans cap emails or contacts a month, which is what you upgrade for.
- Billing period: yearly billing saves 13% at Mailwarm, about 17% at Smartlead, about 20% at Warmup Inbox and Lemwarm, and 25% at Mailivery, on each vendor's own figures.
- Extras sold separately: placement tests, spam tests and expert calls are included at some tools and charged at others.
Notes on prices that are hard to compare
Mailreach's calculator shows totals that do not match $19.50 times the number of mailboxes and does not explain its discounts, so the 5 and 25 columns use the list rate. Lemwarm lists $29 PER EMAIL a month and offers custom volume pricing to larger teams through sales. Mailwarm shows only yearly-billed prices. Warmy.io describes its pricing as volume-based and publishes only a starting price. Mailivery's plan cards and comparison table give different daily volumes for the same plan, so check before you buy.
Questions
How much does email warmup cost?
As of October 2026, email warmup costs from nothing for one mailbox on a free plan to around $15 to $29 per mailbox a month on per-inbox tools such as Warmup Inbox, Mailreach and Lemwarm. Flat and volume-based tools charge one price for many mailboxes, for example Smartlead at $39 and Instantly at $47 a month.
What is the cheapest email warmup tool for a freelancer?
For one mailbox, a free plan: Warmerly, TrulyInbox and e-warmup each warm one mailbox free with no card. If you want to pay for one standalone mailbox, Warmforge is $10 a slot billed quarterly. If you also want to send campaigns, Warmerly Starter is $19 a month for 5 mailboxes with sending included.
Is per-mailbox or flat email warmup pricing cheaper?
Per-mailbox pricing is often cheaper for a single inbox. From about three mailboxes upward, flat and volume-based plans usually cost less, because a per-mailbox price multiplies with every inbox you add. At 25 mailboxes, Warmup Inbox comes to $300 a month while Smartlead's flat Base plan is $39.
How much does Warmup Inbox cost?
Warmup Inbox's Basic plan is $19 per inbox a month on monthly billing or $15 billed yearly, with 75 warmup messages a day per inbox. The per-inbox rate falls as you add inboxes, to $18 at 5 and $12 at 25 on monthly billing. Pro is $59 and Max is $99 per inbox a month.
Do Instantly and Smartlead include email warmup in their price?
Yes. Instantly's Growth plan, $47 a month, includes unlimited email accounts and unlimited warmup with 5,000 emails a month. Smartlead's Base plan, $39 a month, includes unlimited email accounts and built-in warmup with 6,000 emails a month. You pay for sending volume, not for warmup.