Instantly vs Apollo

Disclosure: Reachkit, which I run, competes with both tools. I checked each price on this page in October 2026 on Instantly’s and Apollo’s own sites.

My verdict: Apollo is the better place to find people, and Instantly is the better place to email them at volume. Apollo is a B2B contact database that grew sequences, a dialer and AI agents, billed per seat with credits. Instantly is a cold email sender that grew a lead database, sold as flat plans with no per-inbox fee and warmup included. If you need both jobs done well, Apollo for the list and Instantly for the sending is a sensible split.

Pick Instantly if:

• Cold email is the main job and you want lots of inboxes, warmup included, on one flat plan without seat fees.
• You want to buy ready-made Google inboxes at $5 a month, or have AI answer replies and book meetings.
• You’re an agency that needs client portals under your own brand (white label).

Pick Apollo if:

• You need mobile numbers, intent filters and a dialer next to your email sequences.
• Your reps send a modest volume from their own mailboxes and want two-way Salesforce or HubSpot sync on every plan.
• You want a free plan to start on, which Instantly doesn’t have.

Monthly-billing prices in USD as of October 2026, taken from Instantly’s and Apollo’s pricing pages and help centers.

Both vendors’ own pages disagree with themselves in places. Apollo’s help center says to start at 50 emails a day per mailbox and its deliverability page about 20. Instantly’s pricing page promises unlimited email accounts while its terms cap them at 100 per workspace.

Most people comparing Instantly and Apollo are really making two decisions: where to get leads, and where to send from. A Reddit thread that ranks for this search asks exactly that: which is better “for list building”, from someone who already prefers Instantly “for launching campaigns”.

Leads. Apollo reports 240M+ contacts and 30M companies. Its paid plans bring technology, job-posting and funding filters, more intent topics (from Bombora) and waterfall enrichment, and mobile numbers cost from 8 credits. Instantly’s SuperSearch is a separate credits subscription from $9 a month. A verified work email costs 1 or 2 credits depending on the source, about 1.5 on average by Instantly’s count, and nothing if no email turns up. Monthly credits expire after two months.

Sending. Instantly charges no per-inbox fee and includes warmup on paid plans, so extra inboxes add nothing to the platform bill. Apollo sends through mailboxes you connect: one per user on Basic, unlimited Google and Microsoft on Professional (per its help center), and 200 credits a month to warm each one past the first per seat, roughly $3 to $5 at Apollo’s credit prices.

Using both. Export lists from Apollo as CSV and import them into Instantly, which can re-verify them at 0.25 credits a lead. The split fits when you want Apollo’s filters, intent or phone numbers and more inboxes than Apollo’s warmup pricing makes comfortable. If Instantly’s own database finds your buyers, one tool is easier.

In both tools you do most of the setup yourself; the difference is what each one sells you to skip it.

Instantly starts from the inboxes. You connect Google, Microsoft or IMAP/SMTP accounts, set up DNS, turn on warmup per account, then load leads and write the sequence or have Instantly AI draft it. If you’d rather skip that, Instantly will set up Google inboxes for you at $5 per inbox monthly and $15 per domain yearly, live within one to three days with DNS and warmup done. It also sells pre-warmed Google inboxes ($10 a month, in batches of five) and its own AirMail inboxes ($4 a month, capped at 20 campaign emails a day). There’s no Microsoft option.

Apollo starts from the people: you build a list, then send through the mailboxes you connect. Since September 2025 it also sells domains (1,500 credits a year) and Google, Microsoft or SMTP mailboxes (800, 1,500 or 300 credits a month). It handles authentication and advises six weeks of warmup before cold outreach.

Ownership differs too. Instantly keeps ownership and admin access to the domains it sells, and those inboxes can’t be connected to other outreach tools. Apollo gives your team DNS access and lets you log in to bought mailboxes from other email clients, as long as your plan is active and you have credits.

Both advise similar daily volume per inbox; Apollo turns on more guardrails by default and charges credits to warm extra mailboxes, while Instantly includes warmup and leaves more settings to you.

Instantly’s help center recommends 30 campaign emails per inbox a day, and the gradual ramp for new inboxes ships switched off. The automatic campaign pause at 5% bounces (after 200 sends) ships switched on. Warmup runs on a peer-to-peer pool of Instantly users. Paid placement tests ($47 or $97 a month) and a Deliverability AI Agent on Hypergrowth go further.

Apollo’s guidance for new mailboxes ranges from 20 to 50 a day, and mailboxes you buy from it are limited to 200 sends a day. Its warmup runs through Warmbox, a third party, and pauses when credits run out. Sending protection warns at a 4% bounce rate and pauses the sequence at 6%, risky catch-all addresses are blocked by default, and paid plans get weekly blocklist checks. Its placement tests cost no credits, though in October 2026 the Hotmail, Yahoo and AOL tests were listed as temporarily unavailable.

Both keep tracking optional and warn against it in places: Instantly on the first email, Apollo without a custom tracking domain.

Apollo suits a rep whose day mixes email, calls and deals; Instantly suits a team working one reply inbox across many sending accounts.

Instantly’s Unibox pulls replies from all your connected accounts and tags them Interested, Not interested or Out of office at no extra cost. Replying inside it needs Hypergrowth at $97, and so does inviting teammates unless you buy a CRM plan, though nothing is charged per seat. HubSpot and Pipedrive connect natively; Salesforce runs through a third party, OutboundSync.

Apollo’s unified inbox is on every plan, and a reply ends the contact’s sequence by default. Around the inbox you get a dialer, call recording, a meeting scheduler, deal tracking and workflows, plus two-way Salesforce and HubSpot sync on every plan. The tradeoff: each sender needs a seat, and some G2 reviewers find the interface overwhelming.

For agencies the gap is wider. Instantly bills each workspace separately and offers white-label client portals from Hypergrowth. Apollo has no white-label option that I found, and its terms don’t allow accessing the platform “on behalf of” anyone other than yourself. Its partner program instead gives qualifying agencies a seat inside each client’s own Apollo account.

Instantly’s AI goes further at acting in the inbox for you; Apollo’s goes further at prospecting, and both open their product to AI assistants.

Instantly’s AI Reply Agent writes responses, deals with objections and books meetings via Calendly, charging 5 credits for each reply it generates, and can run on autopilot from Hypergrowth. The AI Sales Agent, an AI SDR, finds leads and writes and sends outreach, with an optional autopilot, for 5 credits per lead.

Apollo’s AI Assistant is unlimited on paid plans. Since September 2026, Professional and Organization include agents that find prospects and build or improve sequences on a schedule, with you approving each move. Its AI writer drafts replies, but I found no Apollo agent that sends them on its own.

Each has an official MCP server. MCP is an open standard that lets assistants such as Claude or ChatGPT operate other software. Apollo’s works on every plan including Free, though database prospecting needs a paid plan. Instantly’s exposes its full API and comes with any paid plan. Instantly’s webhooks start on Hypergrowth; Apollo’s workflows can send a webhook when a contact replies or an email bounces.

The two standard setups in each tool, billed monthly at October 2026 prices from Instantly’s and Apollo’s pricing pages, with Reachkit for reference.

Assumptions: the founder is one person with 10 Google inboxes across 5 domains, roughly 4,000 sends a month reaching 1,500 new prospects; the team is three people with 60 inboxes across 20 domains, roughly 25,000 sends reaching 10,000. Each prospect needs a verified email, at Instantly’s published 1.5-credit average and 1 credit in Apollo and Reachkit. Instantly is on Hypergrowth, Apollo on Professional, with extra credits as a range because Apollo doesn’t say how its tiers apply. Yearly domain fees are spread across the months. Own-inbox rows exclude your Google or Microsoft fees, the same in any tool.

Apollo for data, Instantly for sending, with one Apollo Basic seat doing the exports and buying the team’s extra credits, which Apollo sells on any paid plan:

If most of Instantly’s finds cost 1 credit, its totals fall to about $200 to $230 for the founder and $619 for the team. Apollo’s $99 works because warmup and data fit inside one Professional seat’s 4,000 credits, and its seats also cover call recording and two-way Salesforce sync. Instantly and Reachkit also cap stored contacts: the founder fills Reachkit Growth’s 5,000 in about month four, and the team fills either tool’s 25,000 in under three months, so budget for Instantly’s $87 add-on or Reachkit’s $239 tier.

Both tools score well on G2 and get more mixed reviews on Trustpilot, with different complaints: packaging for Instantly, data and credits for Apollo.

Instantly. It scores 4.8 of 5 across roughly 4,150 G2 reviews (October 2026), where ease of use is the most praised trait and support gets frequent credit. Its Trustpilot reviews are far more mixed, though a share of the one-star reviews were left by spam recipients rather than customers. Complaints keep circling back to three things: Growth buyers discovering they can’t answer leads from the Unibox, which Reddit threads warn about; surprise add-on renewals under a no-refund policy; and support that starts with an AI bot and is slow to escalate.

Apollo. It rates 4.7 on G2 from about 9,800 reviews, 4.5 on Capterra from about 400 and 3.1 on Trustpilot from about 1,360, as of October 2026. G2’s AI summary praises its verified contact data, outreach automation and Salesforce link. The repeat complaints are bounces on emails marked verified (Apollo’s help center puts their accuracy at 91%, and Apollo refunds the credit if one bounces when you email it through Apollo within 30 days of requesting it), and credits that run down faster than expected.

The two meet in posts like this Reddit thread, where a user whose main domain landed in spam lays out their stack as “Apollo for data. Instantly for sending, warmup, and deliverability.”

Reachkit is the product I build, so weigh this section accordingly. It fits if you’d rather not split leads and sending across two subscriptions.

• Growth at $39 a month includes 1,000 verified-lead credits from a Lead Finder of 500M+ people and 70M+ companies, unlimited inboxes with AI-written warmup, replying from the Unibox, and unlimited teammates.
• Reachkit can set up Google Workspace or Microsoft 365 inboxes for you, at $5 per inbox monthly and $15 per domain yearly, always on new lookalike domains.
• By default, new inboxes ramp from 3 to 20 emails a day, open tracking is off, CSV imports are verified, and campaigns pause above 5% bounces.

What it doesn’t do: phone numbers, a dialer or intent data like Apollo, or AI that answers replies, white label or placement tests like Instantly. The API, webhooks and CRM sync need Scale, from $99. For one-to-one detail, see Reachkit vs Apollo or Reachkit vs Instantly.

Your lead lists, the mailboxes you own and your copy carry over between Instantly and Apollo; reply history and inboxes bought from Instantly don’t.

• Apollo to Instantly. Export contacts as CSV. Saved contacts export free; net-new contacts cost a credit each when they have a verified email. Exports carry status flags but not message bodies, so copy your sequence steps by hand. Switch off Apollo’s warmup on mailboxes you own, then connect them to Instantly.
• Instantly to Apollo. Export before your Instantly plan lapses, since exporting needs an active one. Leads come out as CSV and sequences through the API, while bulk Unibox export is API-only. Owned inboxes reconnect, though more than one per user needs Apollo Professional. Done-for-you, pre-warmed and AirMail inboxes stay with Instantly.

A mailbox’s reputation belongs to the mailbox and its domain, whichever tool sends from it. Any replacement inbox needs a few weeks of warmup. Annual plans on both are non-refundable, and both sets of terms ask for 30 days’ notice before renewal.

Between just these two, I’d decide by where the hard part is. When finding the right people is hard, Apollo earns its seat price, and a rep sending a few dozen emails a day from their own mailbox may never need more. When volume is the hard part, Instantly’s flat plans, with no per-inbox fee and warmup included, are cheaper to grow on, and Apollo can stay as the data source. If you’d rather have verified leads and sending on one plan, that’s what Reachkit does, and you can try it for 30 days without a card.

More pairs: Smartlead vs Apollo, lemlist vs Apollo, Instantly vs Smartlead and Apollo vs Clay, plus my Instantly and Apollo comparisons.