Instantly vs Smartlead
Instantly and Smartlead are both cold email tools with unlimited mailboxes and warmup on every plan. They differ in where their tiers break and what each plan adds.
Monthly cost at the same volume
| Emails a month | Instantly | Smartlead | Inboxed (for reference) |
|---|---|---|---|
| 5,000 | $47 (Growth) | $39 (Base) | $5 |
| 10,000 | $107 (Hypergrowth) | $94 (Pro) | $10 |
| 50,000 | $107 (Hypergrowth) | $94 (Pro) | $50 |
| 100,000 | $107 (Hypergrowth) | $174 (Unlimited Smart) | $100 |
| 500,000 | $358 (Light Speed) | $379 (Unlimited Prime) | $500 |
| 1,000,000 | Not published | Not published | $1,000 |
Cheapest published plan that covers each volume, billed monthly, before tax. From Instantly’s pricing page and Smartlead’s pricing page, read November 8, 2026. Mailboxes and domains are extra for all three. * Instantly doesn’t publish a price at this volume. * Smartlead doesn’t publish a price at this volume.
What each includes
| Feature | Instantly | Smartlead |
|---|---|---|
| How it’s priced | Per workspace per month, unlimited email accounts | Per account per month, unlimited email accounts |
| Warmup | Included on all plans | Included on all plans |
| Email verification | Not stated on the pricing page | Credit-based; see Smartlead’s page |
| Shared reply inbox | Growth: preview only. Full replies from Hypergrowth | Not stated per plan |
| AI replies | Extra: 5 credits per AI reply, needs a Credits plan | Not stated |
| API | Webhooks from Hypergrowth | API and webhooks from Pro |
| Free plan or trial | 14-day free trial: 250 contacts, 1,000 emails | 14-day free trial, no card |
| Extras | Instantly Credits for leads and AI from $9/mo; done-for-you mailboxes $4–$10/mo each | Client workspaces $29/mo each; SmartServers $39/mo; placement tests from $49/mo |
Choose Instantly if
- You want a built-in lead database paid with credits
- You plan to scale on Hypergrowth (125,000 emails) and add volume in blocks
- You want dedicated sending servers on Light Speed
Choose Smartlead if
- You run an agency and want client workspaces and white-labelling
- You send around 6,000 emails a month (Smartlead’s Base) or 150,000 (Unlimited Smart)
- You need the API from the Pro plan
A third option: Inboxed
If your volume changes from month to month, a plan priced by tier means paying for capacity you may not use. Inboxed has no plan: $1 per 1,000 emails sent, from a prepaid wallet; top-ups start at $5 and aren’t refundable. Free warmup for every mailbox you connect, and a shared team inbox with assignment, private comments and approvals.
It isn’t always cheaper: at several hundred thousand emails a month, a flat plan from Instantly or Smartlead can cost less, as the table shows. Email only: no LinkedIn, calling or SMS steps.
Questions
Which is cheaper, Instantly or Smartlead?
It depends on volume. At 5,000 emails Instantly’s Growth is $47 and Smartlead’s Base is $39. At 100,000, Instantly’s Hypergrowth is $107 and Smartlead’s Unlimited Smart is $174. At 500,000 they’re close: $358 and $379. Monthly billing, from each vendor’s pricing page.
Do both include warmup?
Yes. Both pricing pages list warmup on every plan, with unlimited email accounts.
Is Inboxed affiliated with Instantly or Smartlead?
No. Instantly and Smartlead are trademarks of their owners, named only to compare products. Inboxed isn’t affiliated with them. Prices come from each vendor’s own pricing page on the date shown.
Sources
- Instantly pricing (read November 8, 2026)
- Smartlead pricing (read November 8, 2026)
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