Instantly review

Instantly is a cold email engine rather than a full sales engagement suite, and it is very good at that one job. Every plan includes unlimited email accounts and unlimited warmup, which matters to teams that spread volume over many domains to protect deliverability. Growth costs $47 a month and covers 1,000 uploaded contacts and 5,000 emails, enough to test a motion but not to run one. Hypergrowth at $107 raises that to 25,000 contacts and 125,000 emails and adds the built-in CRM with the Unibox reply inbox. Light Speed at $358 handles 500,000 emails a month. Sequences, advanced scheduling, A/Z testing, bounce detection, an API and webhooks are included. What you do not get is calling or LinkedIn steps, so teams that phone prospects need a second tool. For pure email outbound, it is the easiest product on this list to set up.

Who it is for

High-volume cold email senders and agencies running many mailboxes.

Price

Growth from $47 per month; Hypergrowth $107, Light Speed $358.

Growth $47/monthly
Quoted from the vendor pricing page on November 9, 2026.

Key features

• Unlimited email accounts and email warmup on every plan
• Advanced sequences, scheduling and A/Z testing
• Unibox for replies, with a built-in CRM on Hypergrowth
• Reputation protection and bounce detection
• API, webhooks and integrations

Strengths and weaknesses

• Strength: Unlimited sending accounts at every tier
• Strength: Simple, flat pricing
• Strength: Easy setup for cold email
• Weakness: Email only: no built-in calling or LinkedIn steps
• Weakness: Growth caps uploads at 1,000 contacts and 5,000 emails a month
• Weakness: The built-in CRM starts on Hypergrowth

Key facts

• Growth limits: 1,000 contacts, 5,000 emails per month
• Hypergrowth limits: 25,000 contacts, 125,000 emails per month
• Light Speed sends: 500,000 emails per month

Where it ranks

Instantly is No. 5 in our Best Sales Engagement Platforms verdict.