None of the three headline prices in Instantly vs Smartlead vs Apollo cover what it takes in full to run a cold email campaign. Sending accounts, domains, lead data, and verification all live partly or entirely outside the subscription on at least one of these platforms, and figuring out which pieces are included where matters more than the sticker price.
Instantly and Smartlead both price around unlimited sending accounts at a flat rate, built for teams that bring their own lead lists and want to send without a per-seat cost. While traditional email automation tools focus on opted-in newsletter subscribers, Apollo takes the opposite approach for outbound outreach: a built-in 240-million-contact database and dialer, priced per user, where cost multiplies with every added team member.
I tested Instantly vs Smartlead vs Apollo for 30 days, setting up a cold email campaign in each and tracking what showed up as an extra cost beyond the advertised plan price. Here is the honest comparison, including a structural detail about Instantly that means two separate purchases are sometimes needed to get what looks like one product.
Table of Contents
How We Tested
Five criteria shaped the testing:
- What the subscription includes in practice: sending, lead data, verification, and whether each is bundled or billed separately
- Pricing model, flat rate with unlimited accounts versus per-seat pricing that scales with team size
- Total cost at a realistic setup, plan price plus mailboxes, domains, and any required add-ons
- Deliverability and warmup, whether inbox warmup is included or requires a separate tool
- Category fit, whether the platform sends email only, or also finds and stores lead data
Instantly Review: Strong Deliverability, Split Across Separate Products
Free plan: No, 14-day trial on Outreach plans
Starting price: $37/month (Growth, billed annually), 1,000 leads, 5,000 emails/month
Best plan for most users: Growth, for solo founders and small teams running pure email volume
Platforms: Web, API
Affiliate program: Yes, Instantly affiliate program
Instantly built its reputation on inbox rotation and deliverability, with unlimited sending accounts and warmup included on every plan.
What Instantly does best
Unlimited email accounts and warmup are included starting at the entry Growth plan, keeping per-email cost low once a campaign scales past a handful of mailboxes. Deliverability testing is also notably strong here, with inbox rotation designed specifically to avoid the spam flags that heavy sending volume can trigger on a single domain.
The built-in CRM, added to higher tiers, tracks a deal from cold email reply through to closed, removing a separate tool some competitors require for that step.
Where Instantly falls short
Instantly is structured as three separate product lines rather than one: Outreach plans handle sending, Lead Finder plans provide access to the B2B contact database, and Bundle plans combine both. Buying an Outreach plan doesn’t unlock the lead database, and buying Lead Finder alone doesn’t let a campaign send. Comparing Instantly’s $37 headline against a competitor’s all-in-one price without knowing which product line is needed can understate the setup significantly.
Email verification and validation are also billed as separate credits on top of the subscription rather than bundled in, often requiring dedicated email verification tools to keep bounce rates low, and connecting sending accounts still requires a separate mailbox provider subscription, neither of which shows up on the initial pricing page.
Instantly pricing
| Plan | Price | Leads | Emails/Month | Notable Feature |
|---|---|---|---|---|
| Growth | $37/month (annual) | 1,000 | 5,000 | Unlimited mailboxes and warmup |
| Hypergrowth | $77/month (annual) | 25,000 | 100,000 | Built-in CRM, A/B testing |
| Light Speed | $297/month (annual) | 500,000 | Unlimited | Premium support, bulk operations |
| Enterprise | Custom | Custom | 1M+ | Dedicated support, private delivery |
Instantly: Pros and Cons
Pros:
- Unlimited email accounts and warmup included from the entry tier
- Strong inbox rotation and deliverability reputation
- Built-in CRM on higher tiers tracks deals through to close
- No per-seat charge, cost stays flat regardless of team size
Cons:
- Three separate product lines; buying one doesn’t include the others
- Email verification and validation billed as separate credits
- Sending accounts and domains still require a separate mailbox provider cost
- Easy to underestimate total setup cost from the headline price alone
Rating: 4.0 / 5, strong deliverability and flat pricing, with a multi-product structure that makes total cost the least predictable of the three.
Smartlead Review: The Cheapest Flat Entry, With Warmup Fully Bundled In
Free plan: No, free trial available with no credit card required
Starting price: $39/month (Base, billed monthly), $32/month billed annually
Best plan for most users: Pro, $94/month, for small teams needing API access and CRM basics
Platforms: Web, API
Affiliate program: Yes, Smartlead affiliate program
Smartlead prices around the same unlimited-mailbox model as Instantly, with unlimited sending accounts and warmup included on every tier, including the cheapest one.
What Smartlead does best
The $39/month Base plan undercuts Instantly’s comparable entry tier while including the same unlimited mailboxes and free warmup, making it one of the cheapest true entry points in cold email specifically. No per-seat fees apply at any tier, a structural advantage for an agency running several people against the same client campaigns without the cost multiplying per person.
White-label capability at the Unlimited tiers, while an added cost, gives agencies a client-facing dashboard under their own brand, a feature not bundled this directly into Instantly’s comparable tiers.
Where Smartlead falls short
The published price doesn’t include client workspace fees for agencies, white-label add-ons running $100-200/month, or the mailbox and domain costs every cold email tool requires outside its own subscription. An agency running several client campaigns with white-label and workspace fees can land at $200-400/month well before results, even starting from the $39 headline.
Smartlead is also sending-only: there’s no built-in lead database the way Apollo offers, so a team without an existing list needs to pair Smartlead with a separate data source before a campaign can start, unlike standard email marketing tools that manage subscribers directly.
Smartlead pricing
| Plan | Price | Leads | Emails/Month | Notable Feature |
|---|---|---|---|---|
| Base | $39/month ($32 annual) | 2,000 | 6,000 | Unlimited mailboxes, warmup included |
| Pro | $94/month ($78 annual) | 30,000 | Unlimited | API, webhooks, basic CRM, 1 client workspace |
| Unlimited Smart | $174/month | Higher | Unlimited | White-label available as add-on |
| Unlimited Prime | $379/month | Highest | Unlimited | Private infrastructure |
Smartlead: Pros and Cons
Pros:
- Cheapest true entry point among the three for pure cold email sending
- Unlimited mailboxes and warmup included from the Base plan
- No per-seat pricing, cost stays flat as a team grows
- White-label option available for agencies at higher tiers
Cons:
- No built-in lead database, requires pairing with a separate data source
- White-label and client workspace fees add $100-200/month beyond the headline
- Mailbox and domain costs still required separately, same as Instantly
- Higher tiers needed quickly once agency-specific features are required
Rating: 4.2 / 5, the cheapest flat-rate entry point for pure sending, with agency-specific add-ons pushing total cost up at scale.
Apollo Review: An All-in-One Database and Dialer, Priced Per Seat
Free plan: Yes, limited credits per year, no card required
Starting price: $49/user/month (Basic, billed annually)
Best plan for most users: Professional, $79/user/month, dialer and automation included
Platforms: Web, Chrome extension, Salesforce/HubSpot integration
Affiliate program: Yes, Apollo affiliate program
Apollo bundles a 240-million-contact database, a dialer, and email sequencing into one platform, priced per seat rather than Instantly’s or Smartlead’s flat, unlimited-mailbox model.
What Apollo does best
Having lead discovery and sending in one tool removes the need to pair a separate data source with the sending platform, a measurable advantage over Instantly’s or Smartlead’s send-only approach for a team without an existing list. The dialer, available from Professional, adds a calling channel neither competitor offers at all.
Direct Salesforce and HubSpot integration, including embedding inside Salesforce itself, makes Apollo a more natural fit for a sales team already standardized on one of those CRMs.
Where Apollo falls short
Per-seat pricing means cost multiplies directly with team size: a 5-person team on Professional runs close to $495/month before any add-ons, a different cost trajectory than Instantly’s or Smartlead’s flat rate regardless of headcount. Credits also don’t roll over, so an unused monthly allocation disappears at refresh rather than carrying forward.
The underlying cold email infrastructure dedicated sending domains, mailbox rotation across separate email clients and providers, and deliverability monitoring still lives outside Apollo and typically costs $200-800/month on top, since Apollo’s strength is data and dialing rather than high-volume inbox rotation.
Apollo pricing
| Plan | Price | Seats | Notable Feature |
|---|---|---|---|
| Free | $0 | 1 | Limited annual credits, basic sequences |
| Basic | $49/user/month (annual) | Any | Unlimited email credits, CRM integration |
| Professional | $79/user/month (annual) | Any | Dialer, automation, higher credit limits |
| Organization | $119/user/month (annual, 3-seat minimum) | 3+ | SSO, international calling |
Apollo: Pros and Cons
Pros:
- Built-in 240-million-contact database removes the need for a separate lead source
- Dialer included from Professional, a channel neither competitor offers
- Direct Salesforce and HubSpot integration, including in-platform embedding
- Free tier lets a solo user test the database before committing
Cons:
- Per-seat pricing multiplies cost directly with team size
- Credits don’t roll over; unused allocation is lost at refresh
- Cold email sending infrastructure still requires a separate $200-800/month layer
- Organization tier’s 3-seat minimum forces a larger purchase than some teams need
Rating: 4.1 / 5, the strongest all-in-one option for lead data and dialing, at a per-seat cost that scales differently than either sending-focused competitor.
Head-to-Head Comparison
| Feature | Instantly | Smartlead | Apollo |
|---|---|---|---|
| Pricing model | Flat, unlimited mailboxes | Flat, unlimited mailboxes | Per seat |
| Starting price | $37/month (annual) | $32/month (annual) | $49/user/month (annual) |
| Built-in lead database | Separate product line | No | Yes (240M contacts) |
| Warmup included | Yes | Yes | No (not core focus) |
| Dialer | No | No | Yes (Professional+) |
| Verification billing | Separate credits | Bundled in some tiers | Separate credits |
| Best suited for | Deliverability-focused high-volume sending | Agencies wanting the cheapest flat entry | Teams needing data, dialing, and sending together |
Which Should You Choose?
Choose Instantly if deliverability at scale is the priority, and the multi-product structure is understood upfront rather than discovered at checkout.
Choose Smartlead if the cheapest flat-rate entry for unlimited sending accounts matters most, and lead data will be sourced separately.
Choose Apollo if lead discovery, dialing, and sending all need to happen in one platform, and the per-seat cost fits a small to mid-sized team.
Our Recommendations
Based on 30 days of testing across sending, lead sourcing, and multi-channel outreach workflows, here is the recommended setup by situation:
Solo founder with an existing lead list, sending at volume: Smartlead Base, for the cheapest flat entry with warmup included.
Agency running cold email for several clients: Smartlead’s Unlimited tiers with white-label, budgeting the add-on fees into the quoted client price from the start.
Team without an existing lead list needing to find prospects first: Apollo Basic or Professional, since lead discovery and sending live in one place.
High-volume sender where deliverability has already been a problem: Instantly Hypergrowth, confirming which specific product line covers both sending and any lead data needs.
Small sales team wanting calls alongside email: Apollo Professional, for the dialer neither Instantly nor Smartlead currently offers.
Final Verdict
Instantly, Smartlead, and Apollo all touch cold outreach, but they price around fundamentally different assumptions about what a team already has versus what it needs the platform to provide.
- Smartlead, 4.2 / 5, the cheapest flat entry for pure sending, with agency add-ons pushing cost up at scale
- Apollo, 4.1 / 5, the strongest all-in-one for data and dialing, priced per seat rather than flat
- Instantly, 4.0 / 5, strong deliverability, with a multi-product structure that makes total setup cost the hardest to predict upfront
Before comparing headline prices across these three, confirm what’s included and what isn’t: a lead database, verification credits, inbox warmup, and sending infrastructure are split differently across all three, and the gap between the advertised price and the full setup cost shows up on every one of them.
Frequently Asked Questions
Is Instantly really three separate products?
Yes. Outreach plans handle email sending, Lead Finder plans provide B2B database access, and Bundle plans combine both. Buying one product line doesn’t include the others, so confirming which is needed before purchasing avoids an unexpected second subscription.
Does Smartlead include a lead database like Apollo does?
No. Smartlead is sending-only, with unlimited mailboxes and warm-up included, but no built-in way to find new leads. A team without an existing list needs to pair it with a separate data source.
Why does Apollo cost more for a team than Instantly or Smartlead?
Apollo prices per seat, so cost multiplies directly with every added team member. Instantly and Smartlead both use a flat-rate model with unlimited sending accounts, so their cost doesn’t scale the same way as a team grows.
Do any of these three include email accounts and domains in the price?
No. All three require separate mailbox provider subscriptions (like Google Workspace) and domains for sending, typically $3-6 per mailbox monthly, an added cost outside the advertised subscription price on every platform tested.
Which tool is cheapest for a solo founder with their own lead list?
Smartlead, at $32-39/month for unlimited mailboxes and warm-up with no per-seat cost. Instantly’s comparable Growth plan runs slightly higher, and Apollo’s per-seat Basic plan costs more if the lead database isn’t needed.
Does Apollo’s dialer replace a separate sales calling tool?
For many small teams, yes, since it’s included from the Professional tier without an additional subscription. Larger teams needing advanced call center features may still need a dedicated dialer platform alongside Apollo.
Which platform has the best deliverability reputation?
Instantly is generally regarded as the strongest on inbox rotation and avoiding spam flags at high sending volume, based on independent testing and reviews. Smartlead performs comparably at lower volumes, and Apollo’s focus is less on high-volume sending deliverability specifically.
Is it normal to need more than one of these tools together?
Yes, for some workflows. A team using Smartlead for cheap, flat-rate sending alongside Apollo for lead discovery, or Instantly’s Bundle plans combining both functions, are both reasonable setups depending on whether one platform alone covers data, sending, and verification needs.
