Stack Score

Editorial pick

Instantly

Cold email infrastructure.

Try Instantly✓ Free trial available

Best for

B2B outbound teams and agencies sending high volumes of cold email who need warmup, unlimited mailboxes, and a unified reply inbox.

At a glance

Pricing: paidfrom $37/mo
Setup time: 1 hour
Learning curve: medium
Last verified: 5/19/2026

What we love

✓Best per-mailbox pricing in cold email
✓Warmup network actually improves inbox placement
✓Unified inbox makes high-volume reply handling sane

Where it falls short

−Lead database thinner than Apollo or ZoomInfo
−AI writing assistance still generic
−Aggressive sending can trigger Google/Microsoft flags

Pricing

✓ Pricing verified Jun 21, 2026

4 tiers

Growth

$37.60

monthly (annual)

✓Unlimited email accounts and warmup
✓1,000 uploaded contacts
✓5,000 emails per month
✓Chat support
✓Email automation and analytics

Hypergrowth

$77.60

monthly (annual)

✓Unlimited email accounts and warmup
✓25,000 uploaded contacts
✓100,000 emails per month
✓Premium live support
✓Advanced sequences and scheduling

Light Speed

$286.30

monthly (annual)

✓Everything in Hypergrowth
✓500,000+ emails per month
✓100,000+ uploaded contacts
✓SISR (Server & IP Sharding and Rotation)
✓Reputation protection and bounce detection

Enterprise

Custom

annual contract

✓Everything in Light Speed
✓Dedicated account manager
✓Shared Slack channel
✓Private deliverability network
✓Custom email and contact limits

Why we picked it

If you do cold email volume, Instantly's deliverability infrastructure matters.
— MoreAI.tools editor

Overview

Cold email outreach with unlimited inboxes + email warmup + deliverability tools. Aggressive scale.

Key features

●Unlimited email accounts and sending warmup
●AI sequence writing and subject line generation
●B2B lead database with 160M+ contacts
●Unified inbox for replies across all accounts
●Deliverability network rotates IPs and domains
●Campaign analytics with open, reply, and meeting rates

Best use cases

Outbound agencies

Run hundreds of mailboxes across many clients with warmup and centralized inbox.

Founder-led outbound

Solo founders book demos sending 200-500 emails/day across 5-10 inboxes.

Lead-gen at scale

B2B teams send tens of thousands of personalized emails monthly with reply automation.

Integrations

Gmail

Outlook

HubSpot

Salesforce

Pipedrive

Zapier

Webhooks

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Compare side-by-side

Instantly vs Pipedrive vs HubSpot

Pros, cons, pricing, role-fit — all on one page.

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