Instantly vs Mailshake

Compared on	Instantly Free trial · from $37.60/mo VisitRemove	Mailshake From $25/user/mo VisitRemove
What it is	Cold email platform with unlimited sending accounts and warmup, priced by emails sent and contacts uploaded	Cold email and phone outreach with an AI email writer, billed per user with set sending addresses per plan
Free plan	No	No
Cheapest paid plan	$37.60/mo billed annually (Growth)Instantly pricing	$25/user/mo billed annually (Starter)Mailshake 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 sending email address, 1,500 email sends a month, unlimited uploaded contacts, unlimited warm-up and email verification, 50 data finder credits. No free trial.
Free trial	14-day free trial, no card needed, with 250 uploaded contacts and 1,000 emails	None stated
Platforms	Web, API	Web, Browser extension, API
Integrations (vendor's figure)	Not stated	Salesforce, Pipedrive and HubSpot, plus 1,000+ integrations via Zapier
Open source	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	Small teams starting cold email at a low per-user price Reps who want email and phone calls in one sequence Writing cold email copy with AI
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	Starter allows 1 sending address and 1,500 email sends a month No free trial; payment is collected up front Email rotation, the unified inbox and CRM integrations start on Email Outreach
Made by	Foo Monk, LLC	Mailshake, LLC

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.