Side by side

Mailshake vs Warmbox

Both stand on email outreach software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

Mailshake

Paid ExtensionWeb

Mailshake combines prospect search, email campaign automation, analytics, and outreach across additional channels. Consider the lack of a free trial and the listed paid starting price when deciding whether it fits your workflow.

Visit Mailshake

Warmbox

Paid Web

Warmbox pairs automated inbox warming with controls and deliverability monitoring, plus a separate blacklist and DNS checker. The yearly Solo plan starts at $15 a month, and the stated estimate for initial results is 15–30 days of uninterrupted warming.

Visit Warmbox

The facts

	Mailshake	Warmbox
Free plan	No	No
Open source	Not published	Not published
Runs on	Extension, Web	Web
Lowest paid plan	Starter: $25 a month	Solo (yearly billing): $15 a month
Plans published	7	7
Maker	Not published	Not published
Website	mailshake.com	warmbox.ai
On email outreach software	#30 of 34	#34 of 34

Mailshake: what it does well

Automated follow-ups pause after replies, unsubscribes, or bounces.
Tracks opens, clicks, and replies; supports A/B testing.
Data Finder searches by role, location, or company.
Sequences can include calls, social activity, and offline tasks.
Integrates with Pipedrive, HubSpot, Salesforce, Slack, and email services.

What to know first

No free plan or free trial.
Paid plans start at $29/user/mo.
Upfront payment is collected.

Warmbox: what it does well

Automates several inbox warm-up interactions
Offers configurable scheduling and daily volume
Dashboard tracks spam score and inbox reputation
Lists providers including Gmail, Outlook, and SMTP
Blacklist and DNS checker is described as free

What to know first

No free plan
Yearly Solo plan covers one inbox
Warm-up results usually take 15–30 days
Team plan pricing requires contacting Warmbox

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