Warmer
Warmer is an AI personalization tool that takes a CSV of prospects, researches each one from their social profile and company data, and writes a personalized cold message, for SDRs, founders and agencies sending outbound email.
Updated October 2026
Overview: What is Warmer?
Plans start at $79 a month for 750 credits on Growth (checked October 2026).
You upload names and companies, and Warmer pulls job titles, recent activity, company size, industry, news and funding into a prospect profile. It then writes an opener or full message per lead, checks the email address on higher plans, and returns everything as CSV or JSON or through its API. In an outbound process it sits between list building and the sequencer: build the list, run it through Warmer, then load it into your sending tool.
Fit: Ideal customer profile.
Teams sending a few hundred to several thousand cold emails a month who want each one to reference something specific about the person or company. It's a weaker fit for teams that time outreach around buying signals such as job changes or hiring, which it doesn't track, or that need email finding.
- Personalized first lines at volume
- Light prospect enrichment
- CSV-based outbound workflows
Capabilities
Key features.
01
CSV upload and batch processing of prospect lists
02
Social profile scraping for title, company and recent activity
03
Company data such as size, industry, recent news and funding
04
One AI-written personalized message per prospect
05
Email validation credits on Professional and Scale
06
Export as CSV or JSON, plus a REST API on Professional and above
Usage
How to use Warmer.
Upload a CSV with names, companies and LinkedIn URLs, let Warmer enrich and write, then export. Warmer lists Salesforce, HubSpot, Pipedrive, Outreach, Salesloft and Zapier, and says its CSV format imports into major CRMs and outreach tools. One independent comparison notes there's no direct connection to cold email tools such as Instantly or Lemlist, so those teams export and import or use Zapier.
Cost
Pricing.
$79/ month
Prices from Warmer's homepage (checked October 2026), which works out to about $0.11, $0.04 and $0.03 per lead. Warmer has changed its plans several times, and review sites still quote older prices such as $59 a month for 500 credits, so check the live page before you budget.
Growth
$79.00
- 750 credits a month
- Profile scraping and company data
- AI personalization
- $790 billed yearly
Professional
$149.00
- 4,000 credits a month
- Email validation credits
- API access
- $1,490 billed yearly
Scale
$399.00
- 15,000 credits a month
- Priority processing and support
- Custom integrations
- $3,990 billed yearly
At a glance
Quick facts.
- Stack position
- Sales Engagement
- Category
- AI Sales Tools
- Best for
- Personalized first lines at volume, Light prospect enrichment, CSV-based outbound workflows
- Pricing
- From $79/month
Subcategories
- AI Email Personalization
- AI Lead Enrichment
Questions
Frequently asked.
How much does Warmer cost?
Growth is $79 a month for 750 credits, Professional $149 for 4,000 credits and Scale $399 for 15,000 credits, with yearly billing at 10 times the monthly price (checked October 2026).
Does Warmer verify email addresses?
Email validation is included on Professional and Scale, not on Growth. Warmer doesn't list email finding, so you need addresses or another tool to find them.
Does Warmer integrate with HubSpot and Salesforce?
Warmer lists Salesforce, HubSpot, Pipedrive, Outreach, Salesloft and Zapier, and exports enriched data as CSV or JSON. API access starts on Professional.
What are Warmer's limits?
Personalization comes from a snapshot of public profile and company data, with no alerts for job changes or hiring. Credits cap monthly volume, and verification and the API need Professional or above.
What are the alternatives to Warmer?
Lyne writes tailored cold email intros, Humanlinker personalizes outreach across email and LinkedIn, Clay runs AI research and enrichment in tables, and Lavender scores and improves sales emails as reps write them.
Compare
Warmer alternatives.
Talk to us: Pick the tool. We run the system around it.
Warmer is one part of a stack. We build and run the revenue system it plugs into.
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