Instantly.ai
The letters get warmed by the fire before they're sent, so the recipients never suspect there are six hundred more just like it.
Instantly.ai is cold email outreach software with unlimited sending mailboxes and automatic inbox warmup on every plan, starting at $37.60/month billed annually (Growth, $47/month billed monthly) for 5,000 emails and 1,000 contacts a month. The catch is that the subscription only covers sending: the lead database (branded Instantly Credits) and the built-in CRM are separate paid products with their own tiers, so a fully wired setup with all three commonly runs $100 to $300 a month rather than the sticker price. There's also no free plan at all. The verdict: a strong pick if outbound email volume is genuinely core to the business and you already have a lead source, less appealing if you were hoping to test cold email cheaply before committing.
Every plan promises unlimited mailboxes. None of them promise unlimited patience for warming them all up, feeding them a lead list, and logging the replies somewhere, three separate line items that all live under the same friendly logo.
- Value for price6/10
- Capability7.5/10
- Ease of use7/10
- Trial safety4.5/10
Instantly.ai differs from smaller cold-email tools by treating deliverability as the whole product: every plan, even the cheapest, includes unlimited connected mailboxes and automatic inbox warmup, the two things that most determine whether cold email actually lands in an inbox instead of spam. What it doesn't include is a lead source. Instantly expects you to either bring your own contact list or pay separately for its Instantly Credits database, which is where the real cost of running a campaign tends to show up.
Pricing breakdown
- Growth ($37.60/mo billed annually, $47/mo billed monthly): unlimited email accounts and warmup, 5,000 emails/month, 1,000 contacts, no Slack or webhook support
- Hypergrowth ($77.60/mo billed annually, $97/mo billed monthly): everything in Growth, plus 100,000 emails/month, 25,000 contacts, Slack and webhook integrations, team collaboration features
- Lightspeed ($286.30/mo billed annually, $358/mo billed monthly): everything in Hypergrowth, plus 500,000+ emails/month, 100,000+ contacts, dedicated IP sharding, premium support
- Instantly Credits (separate, from roughly $42/mo): the lead database and enrichment product, billed on credits consumed when you find, verify, or export contacts, credits don't roll over
- Instantly CRM (separate, from roughly $38/mo): the built-in pipeline and reply-tracking product for managing responses from a campaign
Where it falls short
The headline price is only ever part of the bill. A realistic entry-level bundle of Growth outreach plus the matching Credits and CRM tiers runs closer to $118 a month than the $37.60 sticker, and most working setups land between $100 and $300 a month once usage climbs. There's also no free plan at all, so there's no way to test deliverability on your own domain before paying. And because the product is genuinely built for volume, a solo operator sending a handful of highly personalized emails a week is paying for infrastructure they'll barely touch.
Pros
- Unlimited mailboxes and automatic inbox warmup on every plan, including the cheapest one
- Built specifically around deliverability at scale, not just sending volume
- Modular pricing means you only pay for the lead database or CRM if you actually need them
Cons
- No free plan, every tier is paid from the first day
- Lead database and CRM are separate paid products, so the real monthly cost is higher than the plan price
- Overkill for low-volume, highly personalized outreach rather than volume-based campaigns
Common questions
Is there a free plan to try Instantly.ai first?
No. Every plan is paid from day one, starting at $37.60/month billed annually (or $47/month billed monthly) for Growth. There's no free tier or ongoing free plan to test deliverability before committing.
Why does Instantly.ai end up costing more than the plan price?
The subscription price only covers sending and warmup. The lead database (Instantly Credits) and the built-in CRM are separate paid products with their own tiers, so a working outbound setup with all three commonly lands between $100 and $300 a month rather than the $37.60 headline figure.
Does every plan really include unlimited email accounts?
Yes, unlimited email accounts and unlimited inbox warmup are included even on the entry-level Growth plan. What scales with plan tier is monthly sending volume and contact storage, not the number of connected mailboxes.