Data verified September 27, 2026
Cold email tools with unlimited inboxes
16 of the 40 cold email tools in our database offer unlimited inboxes, according to their own pricing pages. The cheapest full 50-inbox stack among them is SmartReach.io at $527.47 per month.
Data verified · Sources: Methodology
Unlimited inboxes means the vendor lets you connect as many sending mailboxes as you like without paying per mailbox. It matters because cold email volume is scaled by adding mailboxes, and per-mailbox fees grow with every one you add.
16 tools compared
| # | Tool | Mailboxes | Entry price | 50-inbox stack / month | Mailboxes | Warmup | Verification | G2 |
|---|---|---|---|---|---|---|---|---|
| 1 | SmartReach.io | Unlimited | from $29/mo billed monthly | $527.47 | Unlimited | Included | Included | 4.6 (60) |
| 2 | Success.ai | Unlimited | from $99/mo billed monthly | $537.47 | Unlimited | Included | Included | 4.9 (258) |
| 3 | Lemlist | Unlimited | from $69/mo billed monthly | $576.12 | Unlimited | Included | Not published | 4.6 (1,988) |
| 4 | ReachInbox | Unlimited | from $30/mo billed annually | $582.12 | Unlimited | Included | Not published | Not available |
| 5 | Skylead | Unlimited | from $100/mo billed monthly | $587.47 | Unlimited | Included | Included | Not available |
| 6 | SalesBlink | Unlimited | from $29/mo billed monthly | $606.12 | Unlimited | Included | Not published | 4.5 (239) |
| 7 | Saleshandy | Unlimited | from $41/mo billed monthly | $643.34 | Unlimited | Included | Included | 4.6 (791) |
| 8 | Smartlead | Unlimited | from $39/mo billed monthly | $681.12 | Unlimited | Included | Add-on | 4.5 (408) |
| 9 | Reply.io | Unlimited | from $59/mo billed monthly | $717.12 | Unlimited | Included | Add-on | 4.6 (1,476) |
| 10 | Woodpecker | Unlimited | from $35/mo billed monthly | $749.47 | Unlimited | Included | Included | 4.5 (105) |
| 11 | QuickMail | Unlimited | from $49/mo billed monthly | $806.12 | Unlimited | Included | Not published | 4.7 (112) |
| 12 | Emailchaser | Unlimited | from $47/mo billed monthly | $845.47 | Unlimited | Included | Included | Not available |
| 13 | Mailshake | Unlimited | from $29/mo billed monthly | no published plan covers the scenario (contact sales) | Unlimited | Included | Included | 4.7 (373) |
| 14 | Emelia | Unlimited | from €37/mo billed monthly | priced in EUR, not converted | Unlimited | Included | Not published | Not available |
| 15 | Salesforge | Unlimited | from $48/mo billed monthly | no published plan covers the scenario | Unlimited | Included | Included | 4.6 (75) |
| 16 | Overloop | Unlimited | from $69/mo billed monthly | no published plan covers the scenario (contact sales) | Unlimited | Included | Included | Not available |
You ask, we answer
Common questions
What is the cheapest cold email tool with unlimited inboxes?
By entry price, SmartReach.io (from $29/mo billed monthly). By full cost of a 50-inbox stack, SmartReach.io at $527.47 per month.
Which cold email tools with unlimited inboxes have a free plan?
ReachInbox.
Which of these include warmup?
16 of 16: SmartReach.io, Success.ai, Lemlist, ReachInbox, Skylead, SalesBlink, Saleshandy, Smartlead, Reply.io, Woodpecker, QuickMail, Emailchaser, Mailshake, Emelia, Salesforge, Overloop.