Cold email · replacement recipe

Go from Instantly to Warmbly

The job: Cold email outreach (Email sequences with follow-ups, Unlimited email accounts with inbox rotation, Unlimited email warmup, Unibox (replies from all accounts)). Pick where you are today and where you want to land; the move below follows your pick.

From · what you pay for now
Instantly
Instantly Growth · $47/mo
Year one+$166modeled
To · your pickBest fit
Warmbly
Starter plan · $29/mo
Change where you land

The money

$47/mo today , then $29/mo

Instantly Growth

Year one, net+$166
Pays back in2.8 months

Modeled from public list prices, with your time at $50 an hour. Show the math

Does it do the job? 4 of 4 covered

  • Covered: Email sequences with follow-ups
  • Covered: Unlimited email accounts with inbox rotation
  • Covered: Unlimited email warmup
  • Covered: Unibox (replies from all accounts)

The work

Setup
About 1 h
Upkeep
None
Watch out
Check first: You only rely on: Email sequences with follow-ups, Unlimited email accounts with inbox rotation, Unlimited email warmup…

Make the move in four steps

  1. Export from Instantly

    Leads from the CRM, email account lists, campaign analytics and sending activity, and blocklist entries. Format: CSV (campaign analytics also as JPG)

    Export steps
  2. Set up Warmbly

    Suits senders under about 150 emails a day (4,500 a month) for $29 a month, with teammates at no extra charge.

    Details
  3. Switch links and integrations

    Point links, embeds and integrations at Warmbly, then send a test through every one.

  4. Cancel Instantly

    Turn off renewal before your renewal date, once the new setup works. Access runs until: Email Outreach and Instantly Credits: the end of the billing cycle….

    How to cancel Instantly
Open WarmblyHow to cancel Instantly
Modeled, not measured. Savings use public prices and planning assumptions: the bill you stop paying, minus the new tool, your upkeep time and your setup time at $50/hour, over the first 12 months. Paths marked Tested by Stackcut were run end to end by us on our own products. They're our tests, not customer results. Check the must-haves in each recipe before you switch.

The whole recipe: 4 ways out, best first

What you use

  • Email sequences with follow-ups
  • Unlimited email accounts with inbox rotation
  • Unlimited email warmup
  • Unibox (replies from all accounts)

Not covered

  • A/Z testing
  • B2B lead database (Instantly credits, sold separately)
  • API and integrations

Check before switching

  • You only rely on: Email sequences with follow-ups, Unlimited email accounts with inbox rotation, Unlimited email warmup, Unibox (replies from all accounts)
  • Export your data from Instantly before canceling

Agents: get_recipe("replace-instantly") on the Stackcut MCP server.

4 ways out, best first

Switch vendorHunter (free tier)Saves $514 in year one
$47/mo today → $0/mo · setup 1 h · then $564/yr · payback 1.1 mo
If your use fits the free tier (50 credits a month; Sequences from 1 connected email account with up to 500 recipients per sequence; unlimited team members).
Covers 25% of the core features (not: Unlimited email accounts with inbox rotation, Unlimited email warmup, Unibox (replies from all accounts))
Suits a founder testing cold email from one mailbox, up to 500 recipients per sequence; no warmup or rotation.
How we got this
You pay now: Instantly Growthflat price$47/mo
New cost: Hunter (free tier)free plan$0/mo
Difference each month$47 − $0+$47/mo
Over 12 months+$47 × 12+$564
Setup, once1 h × $50/h−$50
Year one+$564 − $50+$514
  • Not counting your time (1 h in year one): saves $564 in year one.

Year one = 12 × (what you pay now − the new cost − upkeep) − setup, with your time at $50/hour. Prices are public list prices; hours are Stackcut’s planning estimates. Price it for your team

Switch vendorWarmblySaves $166 in year one
$47/mo today → $29/mo · setup 1 h · then $216/yr · payback 2.8 mo
Covers 100% of the core features
Suits senders under about 150 emails a day (4,500 a month) for $29 a month, with teammates at no extra charge.
How we got this
You pay now: Instantly Growthflat price$47/mo
New cost: WarmblyStarter plan$29/mo
Difference each month$47 − $29+$18/mo
Over 12 months+$18 × 12+$216
Setup, once1 h × $50/h−$50
Year one+$216 − $50+$166
  • Not counting your time (1 h in year one): saves $216 in year one.

Year one = 12 × (what you pay now − the new cost − upkeep) − setup, with your time at $50/hour. Prices are public list prices; hours are Stackcut’s planning estimates. Price it for your team

Switch vendorSmartleadSaves $46 in year one
$47/mo today → $39/mo · setup 1 h · then $96/yr · payback 6.2 mo
Covers 100% of the core features
Suits senders under 6,000 emails and 2,000 contacts a month who don't need the API, for $39 a month.
How we got this
You pay now: Instantly Growthflat price$47/mo
New cost: SmartleadBase plan$39/mo
Difference each month$47 − $39+$8/mo
Over 12 months+$8 × 12+$96
Setup, once1 h × $50/h−$50
Year one+$96 − $50+$46
  • Not counting your time (1 h in year one): saves $96 in year one.

Year one = 12 × (what you pay now − the new cost − upkeep) − setup, with your time at $50/hour. Prices are public list prices; hours are Stackcut’s planning estimates. Price it for your team

Open sourceWarmblyCosts $896 more in year one
$47/mo today → $5/mo + 2 h upkeep · setup 4 h
Covers 75% of the core features (not: Unlimited email warmup)
Suits a technical team that will run its own sender; warmup for self-hosted instances waits for Warmbly Cloud to launch.
License: open_source
How we got this
You pay now: Instantly Growthflat price$47/mo
New cost: Warmblya small server (modeled)$5/mo
Your upkeep time2 h/mo × $50/h$100/mo
Difference each month$47 − $5 − $100−$58/mo
Over 12 months−$58 × 12−$696
Setup, once4 h × $50/h−$200
Year one−$696 − $200−$896
  • Not counting your time (28 h in year one): saves $504 in year one.

Year one = 12 × (what you pay now − the new cost − upkeep) − setup, with your time at $50/hour. Prices are public list prices; hours are Stackcut’s planning estimates. Price it for your team

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