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Instantly

High-volume cold email — unlimited sending accounts with warmup.

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About

Instantly (instantly.ai) is the cold email platform: unlimited sending accounts, automated warmup, and AI sequencing for high-volume outbound specialists.

The deliverability-focused pick for teams sending at scale. Plans $47–$358/mo (provider list price).

What it can do

  • Unlimited sending accounts
  • Automated warmup
  • AI sequencing
  • Deliverability focus
  • API access

Setup

  1. Sign up at instantly.ai.
  2. Connect sending accounts.
  3. Warm up domains automatically.
  4. Launch AI-assisted campaigns.

Prerequisites

Account; domains for sending.

Use cases

salesmarketing

Works with

Generic APIAny agent (.md)

Trust score — 7/10

/10 trustMetrics-checked

Scored 7/10 (metrics tier). Strong cold-email infrastructure player with real high-volume traction. Docked for proprietary licensing and closed metrics (provider-tier adoption estimate). Metrics tier.

How the trust score is built

Full methodology →
Adoption · stars/downloads, log-scaled vs peers
8.0/10
Maintenance · recency, releases, issue load
5.0/10
Openness · license + docs
4.8/10
Manual review · sanity read + red-flag check
7.0/10
  • · provider-tier estimate — thinner evidence (no public adoption metric)
  • · High-volume traction — provider-tier estimate
  • · no release date — neutral maintenance score
  • · Cold-email infrastructure leader; unlimited accounts + warmup, real high-volume traction. Closed SaaS.

Sources

Every fact above was checked against these sources. Where a claim comes from the provider and couldn't be independently verified, the text says so.