Comparison

Warmerly vs Instantly.ai

Instantly is a popular all-in-one cold email and warmup platform. It is the most-marketed name in the category, with the highest brand recognition and the highest price tag.

Warmerly

$19

per month for email; LinkedIn is $50/account separately

The cheaper, specialised alternative. Warmup-only, warmup included on every mailbox, daily auth checks, 5-provider placement insight.

Instantly.ai

$37

per month, starting tier, limited mailboxes

Cold email at scale, with warmup bundled.

The short version

Warmi weighs two software tools on a balanced scale

Warmerly is roughly half the price of equivalent Instantly tiers.
Every Warmerly plan includes its mailboxes and their warmup in the flat price — 5 on Starter, 25 on Growth, 100 on Agency. Instantly charges per slot beyond the base.
Spam-folder rescue runs every 10 minutes on Warmerly, 30 minutes on Instantly.
Instantly includes a campaign sender. Warmerly is warmup-only and integrates with whatever you already use.

Feature by feature

	Warmerly	Instantly.ai
Starting price (per month)	$19	$37
Mailboxes on starting plan	5	1
Warmup emails	Unlimited	Unlimited (on higher tier)
Spam-folder rescue interval	10 minutes	30 minutes
Reply with quoted history	Yes	Yes
Inbox placement seeds	Same- and cross-provider	2 providers
Health score timeline	Granular per event	Daily snapshot
SPF/DKIM/DMARC monitoring	Daily, with remediation copy	Pass/fail badge only
Built-in campaign sender	No	Yes
API access	Agency plan	Higher tiers
USD/GBP billing & EU data residency	Yes	No
Free plan / trial	Free plan (no card), or a 7-day trial	Limited free, then paid
Try before you pay	Free plan (no card) + 7-day trial; no refunds after the first charge	7-day refund window

Our verdict

If you already have a campaign tool you like (Apollo, lemlist, Outreach, Reply.io, even a custom one), Warmerly is the obvious choice. It is roughly half the price, has better-engineered warmup, and does not lock you into a campaign engine you may not want.

Pick Warmerly if

You want the warmup half done well, without paying campaign-tool prices
You already use a separate cold email tool you like
You want USD or GBP billing from a UK-based provider with EU data residency
You manage multiple mailboxes per domain (3+ on a starter budget)

Pick Instantly.ai if

You need warmup and campaigns in a single dashboard with one login
You specifically value Instantly's CRM integrations (Salesforce, HubSpot native)
Budget is not a factor

Questions

Can I use Warmerly with Instantly's campaign engine?

Yes. Warmerly only warms the mailbox. You can run campaigns from Instantly, lemlist, Apollo, Outreach, or any tool that connects to the same Gmail or Microsoft account.

Is Warmerly's peer network as large as Instantly's?

No. Instantly's network is larger by mailbox count. Warmerly's network is smaller but every peer is health-graded and bad peers are quarantined within 24 hours. In practice, both will give you healthy pairing within a week.

How do I migrate from Instantly to Warmerly?

Disconnect the mailbox from Instantly, connect it to Warmerly via the same OAuth flow, pick a ramp curve. Total time: under 2 minutes per mailbox. No DNS changes needed.

Switch to Warmerly See pricing

Keep reading

7 best Instantly.ai alternatives in 2026 — the full list Instantly vs Lemlist — which cold email tool wins?Reply.io vs Instantly — which cold email tool fits?Instantly vs Clay — competitors or complements?Instantly vs Smartlead vs Warmerly — compared Why email deliverability matters for cold outreach All comparison pages

Tired of paying Instantly.ai prices?

Connect a mailbox to Warmerly in 60 seconds. Free plan, no card required. Paid plans start with a 7-day trial, first charge on day 8, cancel any time before then. We will warm right alongside whatever you use now, so you can A/B without commitment.

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Warming up

The short version

Warmerly is roughly half the price of equivalent Instantly tiers.

Every Warmerly plan includes its mailboxes and their warmup in the flat price — 5 on Starter, 25 on Growth, 100 on Agency. Instantly charges per slot beyond the base.

Spam-folder rescue runs every 10 minutes on Warmerly, 30 minutes on Instantly.

Instantly includes a campaign sender. Warmerly is warmup-only and integrates with whatever you already use.

Feature by feature

	Warmerly	Instantly.ai
Starting price (per month)	$19	$37
Mailboxes on starting plan	5	1
Warmup emails	Unlimited	Unlimited (on higher tier)
Spam-folder rescue interval	10 minutes	30 minutes
Reply with quoted history	Yes	Yes
Inbox placement seeds	Same- and cross-provider	2 providers
Health score timeline	Granular per event	Daily snapshot
SPF/DKIM/DMARC monitoring	Daily, with remediation copy	Pass/fail badge only
Built-in campaign sender	No	Yes
API access	Agency plan	Higher tiers
USD/GBP billing & EU data residency	Yes	No
Free plan / trial	Free plan (no card), or a 7-day trial	Limited free, then paid
Try before you pay	Free plan (no card) + 7-day trial; no refunds after the first charge	7-day refund window

Our verdict

Pick Warmerly if

You want the warmup half done well, without paying campaign-tool prices
You already use a separate cold email tool you like
You want USD or GBP billing from a UK-based provider with EU data residency
You manage multiple mailboxes per domain (3+ on a starter budget)

Pick Instantly.ai if

You need warmup and campaigns in a single dashboard with one login
You specifically value Instantly's CRM integrations (Salesforce, HubSpot native)
Budget is not a factor

Questions

Can I use Warmerly with Instantly's campaign engine?

Yes. Warmerly only warms the mailbox. You can run campaigns from Instantly, lemlist, Apollo, Outreach, or any tool that connects to the same Gmail or Microsoft account.

Is Warmerly's peer network as large as Instantly's?

How do I migrate from Instantly to Warmerly?

Disconnect the mailbox from Instantly, connect it to Warmerly via the same OAuth flow, pick a ramp curve. Total time: under 2 minutes per mailbox. No DNS changes needed.

Tired of paying Instantly.ai prices?