Head to head · Documentation review

Instantly vs Smartlead

What each vendor’s own pages say about price, mailboxes, warm-up, LinkedIn, the API and trials, side by side. Prices checked 24 October 2026.

Short answer On the dates checked, Instantly’s cheapest verified plan was $47 a month (Growth) and Smartlead’s was $39 a month (Base), billed monthly. Both price by contacts and email volume rather than per user. The clearest documented difference is warm-up included: Instantly yes, Smartlead some plans.

Side by side.

FeatureInstantlySmartlead
Entry price$47/mo$39/mo
Unlimited mailboxesYes “Unlimited Email Accounts” on Growth and Hypergrowth instantly.ai, checked Yes “All Smartlead plans include unlimited email accounts at no extra cost” smartlead.ai, checked
Warm-up includedYes “Unlimited Email Warmup” on Growth and Hypergrowth instantly.ai, checked Some plans Warm-up is listed as a feature; which plans include it isn’t clear on the page smartlead.ai, checked
LinkedIn stepsNot verified Not verified
Lead databasePaid add-on “Database of 450M+ B2B Leads”, sold as a separate credits plan instantly.ai, checked Not verified
APIYes Public developer documentation developer.instantly.ai, checked Some plans “API & Webhooks” listed as a feature; per-plan availability isn’t clear smartlead.ai, checked
Agency / client workspacesNot verified Paid add-on Client workspaces at $29 a month each; 3 included on Unlimited Prime smartlead.ai, checked
Free trialSome plans “Start for free”, “No credit card required”; trial length not stated instantly.ai, checked Yes “All plans come with a free trial and no credit card is required”; length not stated smartlead.ai, checked
Free planNot verified Not verified

Where they differ.

  1. Warm-up included

    InstantlyYes “Unlimited Email Warmup” on Growth and Hypergrowth

    SmartleadSome plans Warm-up is listed as a feature; which plans include it isn’t clear on the page

  2. API

    InstantlyYes Public developer documentation

    SmartleadSome plans “API & Webhooks” listed as a feature; per-plan availability isn’t clear

  3. Free trial

    InstantlySome plans “Start for free”, “No credit card required”; trial length not stated

    SmartleadYes “All plans come with a free trial and no credit card is required”; length not stated

Not verified for at least one of the two: linkedin steps, lead database, agency / client workspaces, free plan. “Not verified” isn’t a no; check the vendor before you decide.

Instantly pricing.

PlanBilled monthlyBilled annually, a monthWhat the plan lists
Growth $47 $37.60 1,000 uploaded contacts · 5,000 emails a month · Unlimited email accounts · Unlimited warm-up
Hypergrowth $97 $77.60 25,000 uploaded contacts · 125,000 emails a month · Unlimited email accounts · Unlimited warm-up
Light Speed $358 $286.30 100,000 uploaded contacts · 500,000 emails a month
Enterprise Custom Custom 100,000+ uploaded contacts · 500,000+ emails a month

Smartlead pricing.

PlanBilled monthlyBilled annually, a monthWhat the plan lists
Base $39 $32 2,000 contacts · 6,000 emails a month · 2,000 verified emails a month
Pro $94 $78 30,000 contacts · 90,000 emails a month · 30,000 verified emails a month
Unlimited Smart $174 $144 150,000 emails a month · 50,000 verified emails a month
Unlimited Prime $379 $315 500,000 emails a month · 170,000 verified emails a month · 3 client workspaces

Who each one fits.

Instantly

  • Founders and small teams running several secondary domains with 2–3 mailboxes each
  • Anyone who already has a verified list and only needs sending, warm-up and replies
  • Teams that expect to add mailboxes often and don’t want per-mailbox pricing

Smartlead

  • Agencies that need separate client workspaces
  • Teams running many mailboxes who want flat pricing
  • Small senders on the Base plan who stay under 6,000 emails a month

Common questions.

Is Instantly or Smartlead cheaper?

On the dates checked, Instantly’s cheapest verified plan was $47 a month (Growth) and Smartlead’s was $39 a month (Base), billed monthly. Both price by contacts and email volume rather than per user. Which is cheaper for you depends on your seats, contacts and volume; the software cost calculator prices both with your numbers.

What’s the main difference between Instantly and Smartlead?

Warm-up included: Instantly yes, Smartlead some plans. API: Instantly yes, Smartlead some plans.

Have you tested Instantly and Smartlead hands-on?

Not yet. This comparison is built from each vendor’s own documentation, checked on the dates shown. Hands-on results will be labelled when they exist.

The rule

Compare the pricing model before the features: per mailbox, per seat or per contact decides the bill as you grow.