Instantly vs ListKit

Full disclosure: Reachkit is my company, and it competes with both of these tools. All prices below come from Instantly’s and ListKit’s own sites as of October 2026.

My verdict: Instantly suits people who want to pick and pay for each piece, and ListKit suits people who want one purchase that covers everything at a fixed volume. The real gap is the size of the smallest step: Instantly starts at $47 a month and grows a module at a time, while ListKit starts at $597 and grows a Bundle at a time.

Pick Instantly if:

• You want to start small on your own inboxes and add lead data or done-for-you inboxes only when you need them.
• You want AI that drafts replies and books meetings, or white-label portals for clients.
• You plan to build on it with an API, webhooks and an official MCP server.

Pick ListKit if:

• You’ll actually use 1,000 sends a day and most of 10,000 lead credits a month.
• You want pre-warmed inboxes that can usually send on the day you set them up.
• You’d rather have one bill that already covers domains, inboxes, leads and an onboarding call.

Checked October 2026: US dollars, monthly billing, from each vendor’s own pricing and help pages.

Instantly and ListKit both sell the whole cold email stack now, but they package it in opposite ways. Until mid-2026, ListKit was mostly a lead database, with a done-for-you setup service on the side, and its site advertised syncing lists into senders like Instantly. Its June 2026 relaunch put its own sender, Email Engine, inside a single Bundle, so reviews written before then often describe a different product.

Instantly is sold in modules. Sending runs on the Outreach plans at $47 (Growth), $97 (Hypergrowth) or $358 (Light Speed) a month, lead data and AI agents run on Instantly Credits from $9 to $1,700, and the CRM, inbox placement tests and done-for-you inboxes each come with their own bill. You never pay for a module you skip, but the $47 plan holds back Unibox replies, teammates and webhooks, and its 1,000 uploaded contacts are a standing cap that only frees up when you delete leads.

ListKit is sold in one unit: $597 a month buys 10,000 credits, 20 domains, 40 Google Workspace inboxes, storage for 20,000 contacts in live campaigns, the AI Script Writer and one onboarding call. Extra volume means extra Bundles at the same price, and six-month or yearly terms save 10% or 15%. You know the whole bill on day one, but you pay for 1,000 emails a day whether you send them or not.

Lead data is ListKit’s heritage: it claims 977M+ contacts, search is free, each export is triple-verified for 1 credit, and US mobile numbers cost 3 credits when found. Instantly’s SuperSearch claims 450M+ or 610M+ contacts, depending on the page, at about 1.5 credits per verified email. Either way, a big allowance only helps if you fill it with people who fit.

Instantly leaves most setup choices to you, and ListKit makes them for you. On Instantly you connect inboxes (Google, Microsoft or any SMTP account), set up DNS on your own domains, turn on warmup, and bring a list or buy credits. Instantly AI can draft the campaign from a typed request, and a custom-priced VIP service does the setup for you.

Instantly’s done-for-you Google inboxes cost $5 a month each plus $15 a year per domain, ready in 24 to 72 hours with warmup on. It also sells pre-warmed Google inboxes, five at a time for $10 a month each, and AirMail inboxes on its own servers at $4, but no done-for-you Microsoft option.

ListKit sets up the sending side as part of the Bundle. You pick pre-warmed .info domains from its pool, usually ready within minutes, or branded .com domains that need up to 72 hours plus 14 days of warmup. ListKit handles DNS, creates two Google inboxes per domain and runs warmup, while you build the list, write the emails with its AI Script Writer and answer replies.

Two catches: pre-warmed stock runs out and is refilled every few days, and you get no password to the inboxes ListKit provides.

ListKit sets conservative sending limits for you, while Instantly gives you the controls and leaves more of them off by default. Every ListKit inbox starts at 1 campaign email a day and adds 4 each weekday it sends, reaching 25 on its seventh sending day, with the limit locked during the ramp. Warmup runs for good, campaigns go out Monday to Friday by default, and ListKit tracks neither opens nor clicks, since pixels can hurt deliverability.

Instantly’s own guidance puts the ceiling at 30 campaign emails per inbox a day, and a slow ramp for fresh inboxes exists but has to be switched on. Open tracking is set per campaign, and Instantly advises leaving it off on the first email. By default, a campaign pauses itself once bounces top 5% after its first 200 sends.

Instantly has more tools for measuring placement, including paid placement tests and its Deliverability AI Agent (Hypergrowth and above). ListKit builds its checks into the data, verifying every email at the moment of export and filtering out the bad ones. Either way, give a campaign about four weeks of real sending, on top of warmup, before you judge it (why it takes that long).

Both tools collect replies in one inbox with AI labels; the differences are who can answer there and who can see what.

Instantly’s Unibox labels replies automatically, in 50+ languages, at no extra cost. Answering inside it takes Hypergrowth at $97, so on Growth you reply from each mailbox itself, which AirMail inboxes can’t do because they have no mailbox outside Instantly. Teammates also need Hypergrowth or a CRM plan, and get Owner, Admin, Editor or View roles.

ListKit’s Master Inbox comes with every Bundle and sorts replies into categories like Interested and Meeting Booked, though ListKit warns it sometimes files automated replies as Interested. Teammates share the subscription, credits and data without roles, so everyone sees the whole account, up to a member limit ListKit doesn’t publish.

For agencies, Instantly gives each client workspace its own subscription, and from Hypergrowth up it can put clients in a white-label portal on your own domain. ListKit suggests one account with a Bundle per client, where an invited client sees every campaign, or a separate account per client; workspaces inside one account are in development.

Instantly goes much further with AI agents and with tools for builders. Instantly AI turns a typed request into a campaign or a lead list, and its AI Reply Agent writes responses and, with Calendly connected, books meetings, charging 5 credits for each reply it generates (autopilot mode needs Hypergrowth). A separate AI Sales Agent handles prospecting end to end, from finding leads to sending, at 5 credits per lead.

ListKit’s AI works on the list and the copy. Describe the companies you sell to in everyday words and AI Company Search finds them; the AI Script Writer then produces a three-email sequence, A/B variants included, for 100 credits per generation. Replies get AI categories, but nothing answers leads for you.

For builders, Instantly has an API on every paid plan, webhooks from Hypergrowth, native HubSpot and Pipedrive connections, Zapier, and an official MCP server (MCP is an open standard that lets AI assistants like Claude and ChatGPT use other apps), which exposes Instantly’s full API. ListKit offers webhooks on every Bundle, which can feed Zapier, Make or GoHighLevel, plus a HubSpot import. As of October 2026, its help center says a public API and an MCP server are both in development.

Both standard setups use October 2026 public prices on monthly billing, with Reachkit as a reference. Assumptions: done-for-you inboxes wherever sold, domains at $15 a year, and one verified email per new prospect (about 1.5 credits on Instantly’s published average, 1 credit on ListKit and Reachkit).

Scenario A, solo founder: one person sending roughly 4,000 emails a month from 10 inboxes across 5 domains, reaching 1,500 fresh prospects.

Growth at $47 would handle the email volume, yet 1,500 new contacts a month blow past its 1,000-contact cap right away and Unibox replying is missing, so the table uses Hypergrowth. If most emails cost 1 credit, a $47 or $77 credit plan brings Instantly to about $200 to $230. ListKit can’t go below one Bundle, so this founder gets 40 inboxes to use 10, and 10,000 credits to use under 2,000. Reachkit Growth’s 5,000 contacts fill in about month four.

Scenario B, agency or growing team: three users, 60 inboxes across 20 domains, roughly 25,000 emails a month to 10,000 fresh prospects.

At the default 25 a day per inbox on weekdays, one Bundle’s own inboxes send about 22,000 emails a month, so 25,000 takes two. One Bundle plus 20 inboxes of your own and a $47 pack of 2,000 credits ($644 plus those inboxes) may also work, since ListKit’s help center names no monthly sending cap, but that Bundle holds only 20,000 contacts in active campaigns.

At 10,000 new contacts a month, Instantly’s and Reachkit’s 25,000-contact caps both fill by around week eleven unless you delete old leads; Instantly’s fix is an $87 monthly add-on per extra 25,000, Reachkit’s is its $239 tier. Two ListKit Bundles hold 40,000 contacts in active campaigns, and its help center says to delete finished campaigns when you hit the limit. Yearly billing brings Hypergrowth to $77.60, a Bundle to $507.45 a month and Reachkit to $29 or $79 (more costs to plan for).

On G2, Instantly has about ten times ListKit’s review count. G2’s roughly 4,150 reviewers average 4.8 out of 5 as of October 2026, crediting its ease of use and support most often, while the top complaint is key features sitting on pricier plans. Its Trustpilot page showed no score when I checked in October 2026; the roughly 1,170 reviews there are more mixed, and some one-star ones are from people who received spam sent via Instantly rather than paying users.

Recurring Instantly complaints are mostly about packaging and support: replying locked to Hypergrowth (one r/Coldemailing post warns Growth buyers about it), add-on subscriptions and renewals people didn’t expect, under terms that rule out refunds, and support that starts with an AI bot and is slow to reach a human.

ListKit averages 4.7 out of 5 from about 390 G2 reviews and 4 out of 5 (“Great”) from about 250 Trustpilot reviewers, both checked October 2026. Recent Trustpilot reviewers credit pre-warmed inboxes for a fast start, along with the lead data, the hands-on founders and the coaching calls.

The negative ListKit reviews mostly involve refund requests and campaigns that didn’t deliver what the sales call promised, often for ListKit’s older done-for-you offers. Some one- and two-star reviews from April to June 2026 also report stale or low-quality leads and bounced emails, several tied to managed services, so check the date on any ListKit review.

Reachkit is the tool I build, and it sits between Instantly’s modules and ListKit’s Bundle. For $39 a month, its Growth plan gives you Unibox replies, as many teammates as you like, unlimited inboxes of your own with AI-written warmup, and 1,000 lead credits each month. Google Workspace or Microsoft 365 inboxes set up for you can be added one at a time, at $5 per inbox monthly and $15 per domain yearly.

The defaults are conservative: fresh inboxes start at 3 emails a day and climb to 20, open tracking starts off, and CSV imports are verified on the way in. The MCP server works on every plan, and Scale from $99 adds the REST API, webhooks and CRM sync.

What it doesn’t do: no AI agent answers replies, there’s no white label, and there are no placement tests or pre-warmed inboxes, so plan on about three weeks of warmup for new ones. I’ve compared it in depth with Instantly and with ListKit.

Your leads and your own inboxes move between Instantly and ListKit; done-for-you inboxes from either one don’t. Export first, because both cut access when the plan ends: Instantly only lets you export while a subscription is active, and ListKit deletes the account, Order History, campaigns, domains and inboxes when the last Bundle ends.

• Lists: both import CSV files. ListKit has no native connector to other senders now, so moving its leads into Instantly means a CSV export.
• Inboxes you own: Google and Microsoft accounts connect to either tool and keep their reputation, because reputation belongs to the mailbox and its domain, not the software. Remove them from the old tool so they don’t warm in two places.
• Done-for-you inboxes: Instantly keeps ownership of the domains it sells, and ListKit doesn’t transfer domains. Replace them, with pre-warmed inboxes from either vendor if you can’t wait out a fresh warmup.
• Sequences and replies: copy sequences by hand and save the reply threads you need.

If you’re testing cold email or sending a few thousand emails a month, I’d lean Instantly: start on your own inboxes and pay for leads and done-for-you inboxes once you need them, though I’d budget for Hypergrowth so you can reply from the Unibox. If you’re sure you’ll send 1,000 emails a day and want every piece on one bill, a ListKit Bundle is fair value, and pre-warmed inboxes get you moving fast. If you land somewhere in between, Reachkit is free to try for 30 days.

Related reading: my pages on Reachkit vs Instantly and Reachkit vs ListKit, plus how Instantly stacks up against Smartlead and against Apollo.