Instantly vs Smartlead (2026): Prices, Deliverability, Limits

Who is this comparison for?

This page is for founders and first sales hires who have a list of people to email and need a tool to send the messages. Instantly and Smartlead are two of the cold email tools in our roundup of AI SDR tools for startups, which covers 16 tools.

A cold email tool delivers your emails and protects your sender reputation. You usually bring the list.

Eight terms, in plain words:

• Cold email: a first email to someone who has not asked to hear from you.
• Mailbox: one email address you send from, such as sam@yourcompany.com.
• Domain: the part of your address after the @.
• Sender reputation: the trust that email providers, such as Gmail, place in your sending domain.
• Deliverability: whether your email reaches the inbox instead of the spam folder.
• Warm-up: slowly raising your sending volume so email providers learn to trust a new mailbox.
• Unified inbox: one place to read the replies from all your mailboxes.
• Credits: the units a tool uses up when it works.

How much do Instantly and Smartlead cost?

Both tools charge a set price a month for each plan. The plans differ in how many contacts you can load and how many emails you can send.

Prices are in US dollars a month. Smartlead prices are as of 19 October 2026 and Instantly prices are as of 20 October 2026. Instantly is rolling out new plans: Starter is $76.50 a month on yearly billing, Scale $238 and Agency $695, each with a 14-day free trial. Some accounts still see the older Growth plan at $47 a month. Confirm the plan set shown to you before you buy. Smartlead's yearly billing is 17% lower than its monthly billing. Confirm the monthly email limit with Instantly before you choose a plan.

What does each tool do?

Both tools send your emails, warm up your mailboxes and give you one inbox for replies. They differ in what they add.

Sentiment tags label each reply by its tone.

How do warm-up, mailboxes and sender reputation work?

Sender reputation is the trust that email providers place in your sending domain. If that trust is low, more of your email lands in the spam folder. Cold email tools protect it, but none can promise that an email reaches the inbox.

Warm-up builds trust in a new mailbox. A new mailbox has no sending history, so you start with a small amount of email and raise it over time. Instantly includes unlimited warm-up. Smartlead has a warm-up pool.

Mailboxes spread your sending. Mailbox rotation means sending from several mailboxes in turn. Both tools rotate sending across the mailboxes you connect. Smartlead also sells Google mailboxes inside the app.

Google sets rules for senders. Keep these in mind whichever tool you pick:

• Google asks senders to keep their spam rate below 0.10% and to avoid ever reaching 0.30% or higher. You can see your spam rate in Google Postmaster Tools.
• Google's rules cover mail sent to personal Gmail accounts. Every sender needs SPF or DKIM. If you send 5,000 or more messages a day, you need SPF, DKIM and DMARC, and your marketing messages need one-click unsubscribe.
• SPF, DKIM and DMARC are the email checks that prove your domain is yours.

Start with low volume and watch your spam rate.

What deliverability tools does each one have?

Instantly. Every sending plan includes unlimited warm-up and unlimited email accounts. The plans include reputation protection, bounce detection (a bounce is an email that comes back undelivered), a global block list (a list of addresses you never email, applied to every campaign) and A/Z testing (trying two versions of a message). Higher plans add the SISR system. Enterprise adds a private deliverability network.

Smartlead. It has a warm-up pool and mailbox rotation. SmartSenders is an add-on where you buy mailboxes and domains. SmartDelivery is a deliverability add-on. SmartServers are private sending servers, and the Prime plan includes 3 of them.

Instantly builds warm-up, reputation protection and bounce detection into every sending plan. Smartlead sells mailboxes and a deliverability add-on separately.

Who does each tool fit?

The two tools do similar jobs, so read the Fits line on each card. Longer bars mean a stronger fit on that point. The bars are Research, Deliverability, Automation, Setup and control, and Price clarity.

Instantly

Cold email and outreach

Appscribed App Score for Instantly: 7.8 out of 10

Instantly sends cold email at volume across unlimited mailboxes with warm-up, and sells a lead finder and a light CRM beside it.

Fits: If you already have a list and want to send a lot of email across many mailboxes at a clear monthly price, this fits.

Starts at: Instantly is rolling out new plans: Starter is $76.50 a month on yearly billing, Scale $238 and Agency $695, each with a 14-day free trial. Some accounts still see the older Growth plan at $47 a month. Confirm the plan set shown to you before you buy.

Research

Research: 6.5 out of 10

Deliverability

Deliverability: 8.5 out of 10

Automation

Automation: 8.0 out of 10

Setup and control

Setup and control: 8.0 out of 10

Price clarity

Price clarity: 9.0 out of 10

What it automates: Sending, warm-up and a shared inbox for replies. An AI Reply Agent answers interested replies, shares your Calendly link and books the meeting, and can run with your approval of each reply. Autopilot, which sends without approval, is on higher plans. It uses 5 credits for each reply it writes. Ask which plan includes it. A lead finder is sold in credits.

Good to know:

• The lead finder and the CRM are priced separately from the sending plans.
• The plans include reputation protection, bounce detection and a global block list.

Visit InstantlyRead the Instantly review

Smartlead

Cold email and outreach

Appscribed App Score for Smartlead: 7.5 out of 10

Smartlead is a cold-email sending platform with a warm-up pool, mailbox rotation, a mailbox store, the SmartProspect lead finder, the SmartDialer for calls and a CRM add-on.

Fits: If you want control of your mailboxes and sending limits at a low monthly price, this fits.

Starts at: Base is $39 a month (2,000 contacts, 6,000 sends). Pro is $94, Smart is $174 and Prime is $379, all on monthly billing. Yearly billing is $32, $78, $144 and $315.

Research

Research: 6.0 out of 10

Deliverability

Deliverability: 8.5 out of 10

Automation

Automation: 8.0 out of 10

Setup and control

Setup and control: 7.0 out of 10

Price clarity

Price clarity: 8.5 out of 10

What it automates: Sending, warm-up and mailbox rotation, plus a unified inbox with sentiment tags. Reply Agent drafts replies that aim to book the meeting and adds calendar links. You review and send them. The inbox also routes leads to booking calendars.

Good to know:

• Mailboxes and domains are paid add-ons.
• Private sending servers come with Prime and cost extra on Pro and Smart.

Visit Smartlead

What does each tool cost beyond the plan?

The plan price is rarely the whole bill. Look for these extra costs.

• Instantly: credits for the AI Reply Agent. The agent uses 5 credits for each reply it writes. Ask which plan includes it before you count on it.
• Smartlead: mailboxes add up. Smartlead Base plus 5 Google mailboxes costs $39 plus 5 x $4.50 = $22.50, so $61.50 a month, plus $13 a year for each domain. Instantly's entry plan is $76.50 a month on yearly billing (some accounts still see Growth at $47) and connects unlimited email accounts. Ask what your mailboxes will cost there before you compare the two totals.

Which one should you pick for your startup?

• If you are a solo founder with a small list and want the lowest price: pick Smartlead. Base is $39 a month for 2,000 contacts and 6,000 sends. Instantly Starter is $76.50 on yearly billing (the older Growth plan is $47) for 1,000 uploaded contacts and 5,000 emails a month.
• If you want to try before you pay, with no card: either works. Instantly has a 14-day trial and Smartlead has a trial on all plans.
• If you want to buy mailboxes and domains from the same company as your sending tool: Smartlead's SmartSenders add-on sells Google mailboxes from $4.50 a month and domains from $13 a year. Instantly also sells done-for-you Google email accounts, so compare the totals.
• If you want an AI agent that books the meeting for you: pick Instantly. Its AI Reply Agent books the meeting, and you can approve each reply before it sends. Ask which plan includes it.
• If you want a lead finder priced in credits: pick Instantly. Smartlead has one too, called SmartProspect, so compare what each costs on your plan. You can read more in our Instantly review.
• If you will send 500,000 emails a month: look at Smartlead Prime at $379 a month, which includes 3 private sending servers, and ask Instantly which plan fits that volume.
• If you want email, LinkedIn and calls in one sequence: pick lemlist instead. It is covered below.

If you still need a list of people to email, see Clay vs Apollo vs ZoomInfo.

What are the alternatives to Instantly and Smartlead?

If neither tool fits, these are the closest options.

• lemlist runs one sequence across email, LinkedIn, calls, SMS and WhatsApp. The Email plan is $69 a month with unlimited users and up to 50,000 emails a month, and Multichannel is $109 a month per user. It includes email warm-up and a deliverability hub, and both plans have a 14-day free trial.
• Salesforge is a cold email sequencing tool with warm-up and mailbox rotation. Pro is $48 a month on monthly billing ($40 on yearly billing). It also has an optional AI agent, Agent Frank, that does the prospecting.
• Apollo is a contact database with email sending in the same app. It has a free plan, and Basic is $65 per seat a month on monthly billing.
• Unify is an AI SDR with a free plan, then $20 or $60 per seat a month on monthly billing.

Read the full Unify review if you want an agent to build the list and run the outreach.

See the AI SDR tools guide for all 16 tools and their prices.

Frequently asked questions

Which one should you start with?

Here is the short version again.

• If you want the lowest price, look at Smartlead.
• If you want an AI Reply Agent that answers interested replies, look at Instantly.
• If you will send 500,000 emails a month, look at Smartlead Prime and ask Instantly which plan fits that volume.

Prices change, so check the price with the company before you buy. Whatever you pick, start with low volume and watch your spam rate.