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Cold Email Software

Instantly

All-in-one cold email engine with unlimited inboxes and warmup.

★★★★★4.8 on G2 (1,208+ reviews)

Overview

Instantly is a high-volume cold email and deliverability platform offering unlimited sending accounts, automated warm-up, a unified inbox (Unibox), and a built-in B2B lead database. It is popular with agencies, SDR teams, and founders who want an all-in-one sending stack at a flat price. The focus is deliverability and volume rather than dialing or deep CRM workflow.

Best for: The pick when you need unlimited inboxes and warm-up in one flat subscription for high-volume B2B outreach.

Key features

Unlimited sending accounts
Automated warm-up across accounts
Unibox unified inbox
Built-in B2B lead database
A/B testing and campaign analytics
Inbox rotation and sending calendar
API v2 and webhooks

Pricing

PlanPriceIncludes
Growth$37
per month
5K sends, unlimited accounts
Hypergrowth$97
per month
Unibox, A/B, ~100K sends
Light Speed$358
per month
dedicated IP sharding, 500K+ sends

Pricing changes often. Verify current pricing on the vendor site before you buy.

Instantly demo

Pros and cons

Pros

  • Unlimited accounts and warm-up at a flat price
  • Fast setup and an all-in-one sending stack
  • Built-in lead database for sourcing

Cons

  • Deliverability still needs manual tuning
  • Billing complaints reported
  • CRM sync gaps versus dedicated platforms

Integrations

HubSpotSalesforcePipedriveClayZapierMaken8n

Top Instantly alternatives

Links

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Reviewed July 2026. Data compiled from public sources; ratings via G2.