Instantly vs Smartlead 2026: which is better for cold email?

Both send cold email from as many mailboxes as you connect, warmup included, so the choice comes down to how you work. Instantly suits founders and small teams that want sending, a 450M+ contact database and AI reply handling in one app, from $47 a month or $37.60 billed yearly, but leads cost extra on a separate Credits plan and Instantly refunds nothing. Smartlead suits agencies and technical teams: Base costs $39 a month or $32.50 billed yearly, client workspaces cost $29 each, and new customers can ask for a full refund within 7 days.

Checked on 15 October 2026 against each vendor's own pages. Prices are US dollar list prices excluding tax, and "yearly" prices are per month, billed yearly.

Revexa builds Leo, an AI agent in the same market, so read with that in mind. This comparison is about the two tools in the title.

Instantly vs Smartlead at a glance

Sources: Instantly pricing, Instantly pricing file, Instantly terms, Instantly privacy, Smartlead pricing, Smartlead pricing file, Smartlead refund policy, Smartlead DPA.

What a working setup costs

Every plan and add-on is in Instantly pricing and Smartlead pricing, and 30 tools are compared in our pricing research. Our estimates at list price follow Instantly's advice of 30 emails per mailbox a day for both tools, with 22 sending days, two mailboxes per domain, and Google mailboxes and domains bought in each tool.

• A founder emailing 1,000 contacts from their own list in a five-step sequence, 5,000 emails a month, needs 8 mailboxes on 4 domains. Instantly: Growth $47, mailboxes $40 and domains $5 a month, $92 in total ($82.60 with yearly billing). Smartlead: Base $39, mailboxes $36 and domains about $4.33, $79.33 ($72.83 yearly).
• The same founder buying about 1,000 verified emails a month. Instantly adds Growth Credits at $47 ($37.60 yearly), for $139 ($120.20). Smartlead adds the $59 verified-email add-on, which covers up to 2,000, for $138.33 ($131.83 with Base billed yearly).
• An agency with five clients. Smartlead Pro plus five client workspaces costs $239 a month. Instantly needs one subscription per workspace: $235 a month on Growth, or $485 on Hypergrowth if client teams must log in.

Deliverability: what is published, and what is not

• Warmup. Both include unlimited warmup. Instantly says it runs on "a private deliverability network of 4.2M+ accounts". Smartlead publishes no pool size on its pricing pages; it puts plans on different pool tiers, from Foundation on Base to Premium on Unlimited Smart and Prime.
• Sending pace. Instantly recommends 30 campaign emails per mailbox a day, and at most 20 on its own AirMail mailboxes. Smartlead's blog, updated 25 September 2026, says to keep every mailbox at 50 cold emails a day or fewer.
• Dedicated infrastructure. Instantly's SISR, a dedicated or private server with IP rotation, comes with Light Speed at $358 a month. Smartlead sells dedicated servers with a dedicated IP at $39 each from Pro and includes three on Unlimited Prime.
• Placement tests. Both sell them separately. Instantly's Inbox Placement add-on costs $47 a month for unlimited one-time tests, or $97 with automated tests; Smartlead's SmartDelivery starts at $49 a month.
• Independent tests. We found none by a tester without a stake, with a named year and sample. The closest, published by Cotera in March 2026 with 600 leads per tool, came from a team that had used Smartlead for nine months. Splits quoted on comparison pages, such as 94% against 89% or 88% against 81%, trace to an unnamed "source review" or to Instantly data we could not find on Instantly's site.
• The mailbox providers' rules apply to both. Google asks senders to keep spam rates in Postmaster Tools below 0.10% and never reach 0.30%, whichever tool sends; see domain reputation for cold email.

When to pick Instantly

• You want leads, sending and replies in one app. SuperSearch covers 450M+ contacts and the AI Reply Agent uses 5 credits per reply.
• You are one sender or a small team in one workspace. Growth covers 5,000 emails a month and 1,000 uploaded contacts at a time; above that you move up a plan rather than pay overage.
• You want ready-made mailboxes: Google accounts from $5 a month, or $10 pre-warmed, and domains at $15 a year, bought inside Instantly.
• You want calls and SMS next to email. Instantly's CRM add-on puts calls, SMS and tasks in one inbox with your email; Instantly lists calling and SMS on Hyper CRM, $97 a month.

When to pick Smartlead

• You run an agency. Client workspaces cost $29 each from Pro, white-labelling is available, and Unlimited Prime includes three workspaces and three dedicated servers.
• You bring your own list and want the lowest entry price: $39 a month, or $32.50 billed yearly, for 6,000 sends and 2,000 stored contacts.
• You want a way back. New customers can ask for a full refund within 7 days of payment, although Smartlead's terms say it gives no refunds if you cancel during a subscription period.

When neither fits

• You need LinkedIn and email in one sequence from one subscription. Smartlead adds LinkedIn through integrations with separate tools, HeyReach or Aimfox, and Instantly mentions LinkedIn connections in its CRM add-on. lemlist's Multichannel plan has both built in, at $109 per user a month or $87 billed yearly.
• You need contacts and calls more than volume. Apollo combines a contact database, sequences and a dialer, but its Free and Basic plans send from one mailbox per user, at most 250 emails a day.
• Your prospects are in Germany. UWG §7 requires prior consent for advertising email, and no sending tool changes that. See cold email laws by country.
• You lack the moment, not the engine. An agent such as Leo by Revexa watches buying signals such as hiring and funding, writes LinkedIn and email messages in your voice, and by default you approve each draft before it is sent; $99 a month in the US, €89 in Europe, 999 SEK in Sweden, excluding VAT, 7 days free. Wrong choice if you want to send thousands of cold emails a month from your own list or need a database to export.

GDPR and where the data is

• Instantly. Its privacy policy, updated 22 September 2026, says "We generally store the Information used in our Services in the United States", with transfers relying on mechanisms such as the EU Standard Contractual Clauses and the EU-U.S. Data Privacy Framework. The DPA, updated 10 September 2026, names Foo Monk LLC, "a Wyoming corporation", as your processor and includes the clauses.
• Smartlead. It is run by 521 Products Pty Ltd, "an Australian registered business", under the law of New South Wales. Its DPA, updated 18 September 2026, says EU and UK data sits in data centres "inside and outside the European Union and the UK", and other data may be processed in nine countries, including Australia, India and the United States. AWS hosts the service, and the EU Standard Contractual Clauses and the UK Addendum apply.
• Your own sending. With both tools you choose who gets emailed, so you are the controller and need your own lawful basis, usually legitimate interest under GDPR art. 6.1 f. This is not legal advice.

Common questions

Is Instantly or Smartlead better for cold email?

No independent test shows either one placing more email in the inbox. Instantly is the simpler all-in-one for a founder or small team, with a lead database and AI replies; Smartlead is cheaper to start and built for agencies and teams that work through the API.

Which is cheaper, Instantly or Smartlead?

Smartlead at entry: $39 a month, or $32.50 billed yearly, against $47 or $37.60. Once a founder adds about 1,000 verified emails a month and 8 mailboxes, both cost about $138 to $139 a month on monthly billing (our estimate).

Which is better for agencies?

Smartlead, for most: client workspaces cost $29 each from Pro, and Unlimited Prime includes three. Instantly needs a subscription per workspace, and team invites start on Hypergrowth at $97 a month.

Can I get a refund from Instantly or Smartlead?

Instantly: no, its terms make all fees non-refundable. Smartlead: new customers can ask for a full refund within 7 days of payment, and for a renewal within 3 days if unused; add-ons such as mailboxes are never refunded.

Do Instantly and Smartlead include leads?

Not in the base price. Instantly's 450M+ contact database needs a separate Credits subscription, from $9 a month; Smartlead's verified prospect emails cost $59 a month on Base and Pro and are included from Unlimited Smart.