Instantly vs Reply.io vs Smartlead

Written head to head: Instantly vs Smartlead, with when to choose each side.

Compared on	Instantly Free trial · from $37.60/mo VisitRemove	Reply.io Free trial · from $49/user/mo VisitRemove	Smartlead Free trial · from $32.50/mo VisitRemove
What it is	Cold email platform with unlimited sending accounts and warmup, priced by emails sent and contacts uploaded	Multichannel sales outreach with unlimited mailboxes on volume plans and Jason, an AI SDR	Cold email platform with unlimited mailboxes and warmup, priced by sends and stored contacts, not seats
Free plan	No	No	No
Cheapest paid plan	$37.60/mo billed annually (Growth)Instantly pricing	$49/user/mo billed annually (Email Volume)Reply.io pricing	$32.50/mo billed annually (Base)Smartlead pricing
What it covers	Outreach plan: 5,000 emails a month, 1,000 uploaded contacts, unlimited email accounts and warmup. Lead data and AI agents need a separate Instantly Credits plan; the cheapest, Nano, is $9 a month for 150 credits.	1,000 active contacts a month, unlimited emails, mailboxes (fair usage policy) and warmup, 50 live data credits. Tiers up to 5,000 contacts are per user; from 10,000 contacts ($179 a month, or $159 billed yearly) the price is flat with unlimited users.	2,000 stored contacts, 6,000 email sends and 2,000 verified prospect emails a month, unlimited email accounts; $390 a year on annual billing. No CRM, API or webhooks on Base.
Free trial	14-day free trial, no card needed, with 250 uploaded contacts and 1,000 emails	14-day free trial with core features, including the B2B database, multichannel sequences, API and AI features	Free trial on every plan, no card needed; length not stated
Platforms	Web, API	Web, Chrome extension, API	Web, API
Integrations (vendor's figure)	Not stated	Native HubSpot, Salesforce, Pipedrive, Copper, Zendesk Sell and Close integrations, plus Zapier, Make and 100+ integrations	Native connections with Clay, HubSpot, Zapier, Slack, Salesforce and 18+ more
Open source	No	No	No
Good for	Sending cold email from many mailboxes without per-inbox fees Agencies running high-volume campaigns for several clients Finding leads and writing sequences with AI in the same tool that sends them	Combining email, LinkedIn and calls in one sequence Teams that want a flat price with unlimited users at 10,000+ contacts a month Handing prospecting and first replies to an AI SDR	Agencies sending high volumes across many mailboxes Running client campaigns in separate whitelabel workspaces Scaling sends without per-seat or per-mailbox fees
Watch out for	Growth caps sending at 5,000 emails and 1,000 uploaded contacts a month; going over a plan's volume means upgrading, not paying overage Lead data and AI agents need a separate Instantly Credits subscription Webhooks and full in-app Unibox replies start on Hypergrowth	Email Volume tiers up to 5,000 active contacts are billed per user LinkedIn automation ($69 a month per account) and calls ($29 a month) cost extra on Email Volume Unlimited mailboxes are subject to a fair usage policy tied to active contacts	Base has no CRM, API or webhooks and caps stored contacts at 2,000 Verified prospect emails cost $59 a month extra on Base and Pro Dedicated servers and client workspaces are paid add-ons below Unlimited Prime
Made by	Foo Monk, LLC	ReplyApp Inc.	521 Products Pty Ltd

Entry prices are the cheapest paid plan, as each vendor publishes it; “What it covers” says what that price is per (a user, a channel, a brand, a number of contacts). The sources are listed on each tool's page.

Every tool in cold email and sales outreach tools is on its category page, with the written head-to-heads on Compare.