Instantly

Instantly is the sending layer most mid-market outbound teams should be using by now. Smartlead is the obvious competitor, but Instantly's combination of unlimited sending mailboxes, native lead database, and unified inbox makes it the more complete stack when you want one tool to handle volume, sourcing, and reply triage.

What Instantly Does

At its core, Instantly is built around one job: send a lot of cold email, get it delivered, and surface the replies that matter. Everything in the product orbits that mission. The team has steadily expanded into adjacent layers (lead data, AI, CRM) so a single account can run an end-to-end outbound motion.

• Unlimited email accounts on every paid plan, so you can rotate sending across many warmed mailboxes and domains.
• AI warmup network that builds and maintains sender reputation in the background, with private deliverability pools on higher tiers.
• B2B lead database of 450M+ contacts with 13+ filters, billed via a separate credits product.
• Campaign builder with multi-step sequences, A/B variants, smart sending windows, and per-mailbox daily caps.
• Unibox: every reply from every connected mailbox in one consolidated inbox, with sentiment-tagged conversations.
• Built-in lightweight CRM and pipeline for tracking opportunities created from outbound, without forcing a second tool early on.
• Email verification, website visitor tracking, and AI workflows that route leads based on signals.

Instantly's AI

Instantly's AI sits across three layers: a Copilot that drafts campaigns and finds leads end-to-end, an AI Sales Agent that handles replies on autopilot for inbound and outbound conversations, and AI Workflows that trigger campaigns when a prospect visits a page, books a meeting, or matches a behavioural signal. Used well, the AI layer is what makes one operator look like a full SDR team. Used badly, it spits out the same templated personalisation everyone else is sending. The build matters.

Automations We Build with Instantly

Out of the box, Instantly is a sending machine. The real leverage comes from wiring it into the rest of the revenue stack so leads flow in, replies flow out, and the AE only ever touches conversations worth their time.

• ICP list build, enrichment, and push: we pull from Instantly's lead database (or Apollo, ZoomInfo, custom scrapers), enrich through Clay with the missing signal data, and push the qualified list straight into campaigns.
• Per-lead AI personalisation: a workflow that hits Clay or Claude per row to generate the first line off real signals (recent funding, hiring page, tech stack), then writes it back to Instantly before the send.
• Reply classification and routing: replies from the Unibox get tagged (interested, not now, OOO, unsubscribe, wrong person) and routed. Interested replies go straight into the CRM as a hot lead with a Slack ping; OOO bounces back to a follow-up sequence for the dated return.
• Domain and inbox health monitoring: a daily job pulls reputation, bounce rate, and warmup status per mailbox. Anything trending red gets pulled from rotation automatically before the deliverability drops.
• Meeting booked attribution: when a reply books a meeting on Cal.com or Chili Piper, we write the source campaign, sequence, and variant back to the CRM deal so the team knows which messages actually print revenue.
• Negative-keyword and suppression hygiene: a recurring sync that pulls customer lists, open opportunities, and competitor lists from the CRM into Instantly's suppression list, so prospects in flight never get cold-emailed by accident.

Why Teams Choose Instantly

• Unlimited inboxes are the default, not an upcharge: domain rotation at real volume is built into every tier, not a feature you outgrow.
• Lead database is in-platform: you can run a full outbound motion (source, enrich, send, reply, book) without bolting on a second data tool.
• Unibox handles reply chaos: when 40 mailboxes are sending, the unified inbox is what keeps replies from getting lost in 40 Gmail tabs.
• Pricing scales with volume, not seats: the cost is tied to emails sent and contacts loaded, which lines up with how outbound teams actually grow.
• Native API, webhooks, and Zapier coverage make it straightforward to wire into HubSpot, Pipedrive, Salesforce, Clay, Slack, and any n8n workflow.

Instantly connects to HubSpot, Pipedrive, Salesforce, Clay, Slack, Zapier, Make, and n8n through its API and webhooks, which is enough to plug it into any modern revenue stack. Pricing starts at $47/month for Growth (1,000 contacts, 5,000 emails), $97/month for Hypergrowth (25,000 contacts, 100,000 emails), and $358/month for Light Speed (500,000 emails) on the sending side, with the lead database billed separately by credit tier from $47/month. That's the build we do: Instantly as the sending engine, wired into the data and CRM layer so outbound runs as a system, not a manual lift.