Lemlist vs Warmup Inbox: Cold Email Platform vs Email Warmup Tool Comparison
Compare Lemlist (cold email platform) and Warmup Inbox (email warmup tool) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Lemlist is a cold email and multichannel sales engagement platform built for outbound campaigns, priced from $69/mo, while Warmup Inbox is a dedicated email warmup tool that builds sender reputation across a network of more than 30,000 real inboxes, priced from $19/mo. Many teams run both together rather than choosing one.
Key takeaways
- Lemlist's entry plan costs $69/mo for the Email tier with unlimited contacts and 50,000 emails per month.
- Warmup Inbox's entry plan costs $19/mo for the Basic tier, offering 75 warmup messages per day per inbox.
- Warmup Inbox exchanges natural-looking email with a network of more than 30,000 real inboxes to build sender reputation automatically.
- Lemlist lists 13 integrations including HubSpot, Salesforce, Pipedrive, and Zapier, while Warmup Inbox lists integrations such as Gmail, Outlook, and Amazon SES.
- Warmup Inbox offers 4 pricing tiers compared to Lemlist's 3 tiers.
Reviewed and updated September 2, 2026
Lemlist vs Warmup Inbox: Cold Email Platform vs Email Warmup Tool Comparison
Sales teams building an outbound stack often weigh Lemlist, a cold email platform for cold email outreach, against Warmup Inbox, an email warmup tool for email domain warming and deliverability. They cover different parts of the workflow, so this comparison covers what each one does, what each one costs, and where they overlap.
The Quick Answer
Lemlist is a cold email platform for cold email outreach; Warmup Inbox is an email warmup tool for email domain warming and deliverability. By each vendor's own wording, Lemlist lists 650m+ lead database and ai personalization, and Warmup Inbox lists email warmup and cold email sequence.
Warmup Inbox offers a lower entry point at $19/mo compared to Lemlist at $69/mo.
If your priority is sending campaigns that land in the inbox and generate replies, Lemlist is the one built for it; for building sender reputation and improving inbox placement, that is Warmup Inbox. Many teams run one of each.
Understanding the Core Difference
Lemlist is Multichannel sales engagement platform with 650M+ lead database, AI personalization, and LinkedIn automation.
Warmup Inbox is Email warmup service that exchanges natural-looking email with a network of more than 30,000 real inboxes to build sender reputation automatically. Also offers cold email sequences, language warmup, ESP warmup and IP warmup from the same dashboard.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Basic
Lemlist Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| $69/mo | Unlimited Contacts | 50,000 emails /mo | |
| Multichannel | $109/mo | Unlimited | Unlimited emails & messages /mo |
| Enterprise | Contact Sales | Unlimited | Unlimited emails & messages /mo |
Source: Lemlist Pricing
Warmup Inbox Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Basic | $19/mo | per inbox | 75 warmup messages/day |
| Pro | $59/mo | per inbox | 250 warmup messages/day |
| Max | $99/mo | per inbox | 1,000 warmup messages/day |
| For agencies & teams | Contact Sales | Custom plans starting at 15 inboxes | custom |
Source: Warmup Inbox Pricing
Pricing Analysis
Warmup Inbox offers the lower entry point ($19/mo vs $69/mo). Teams watching their budget will appreciate the savings, especially when starting out.
Warmup Inbox offers 4 pricing tiers compared to Lemlist's 3, giving you more granularity as you scale.
Features Breakdown
- 650M+ lead database
- AI personalization
- Email warmup and deliverability boost
- Unlimited email follow-ups
- LinkedIn automation
- In-app VoIP calling
- and 2 more listed below
- Email warmup
- Cold email sequence
- Language warmup
- ESP warmup tool
- IP warmup
- Spam & Category monitoring
- and 3 more listed below
Lemlist Key Features
- 650M+ lead database
- AI personalization
- Email warmup and deliverability boost
- Unlimited email follow-ups
- LinkedIn automation
- In-app VoIP calling
- WhatsApp integration (add-on)
- Chrome extensions
Warmup Inbox Key Features
- Email warmup
- Cold email sequence
- Language warmup
- ESP warmup tool
- IP warmup
- Spam & Category monitoring
- Email reputation Check
- Human-like AI generated content
- Developers API
The two lists below are a diff of each vendor's own feature list by exact wording, so a capability both tools offer can appear on either side under a different name.
Listed only by Lemlist
- 650M+ lead database
- AI personalization
- Email warmup and deliverability boost
- Unlimited email follow-ups
- LinkedIn automation
- In-app VoIP calling
- WhatsApp integration (add-on)
- Chrome extensions
Listed only by Warmup Inbox
- Email warmup
- Cold email sequence
- Language warmup
- ESP warmup tool
- IP warmup
- Spam & Category monitoring
- Email reputation Check
- Human-like AI generated content
- Developers API
Integration Ecosystem
Lemlist Integrations
Lemlist connects with: HubSpot, Salesforce, Pipedrive, Close.io, Zoho CRM, Zapier, Make, n8n, Clay, Apollo, Slack, Airtable, Calendly.
Warmup Inbox Integrations
Warmup Inbox connects with: Gmail & Workspace, Outlook & Microsoft 365, Zoho Mail, Amazon SES, Mailgun, SendGrid, Sendinblue (Brevo), Any inbox with SMTP.
Integrations listed only by Lemlist: HubSpot, Salesforce, Pipedrive, Close.io, Zoho CRM, Zapier, Make, n8n, Clay, Apollo, Slack, Airtable, Calendly.
Integrations listed only by Warmup Inbox: Gmail & Workspace, Outlook & Microsoft 365, Zoho Mail, Amazon SES, Mailgun, SendGrid, Sendinblue (Brevo), Any inbox with SMTP.
Use Case Recommendations
Best Fit for Lemlist
- Organizations with complex tech stacks needing broad integration support (13 integrations)
- Enterprise buyers who prefer custom pricing and dedicated support
- Sales teams running high-volume outbound email campaigns
- Agencies managing multiple client outreach programs
Best Fit for Warmup Inbox
- Budget-conscious teams looking for an affordable email warmup tool
- Teams that need a wide feature set (9 capabilities listed)
- Enterprise buyers who prefer custom pricing and dedicated support
Feature Comparison Summary
| Feature | Lemlist | Warmup Inbox |
|---|---|---|
| Starting Price | $69/mo | $19/mo |
| Top Tier Price | Contact Sales | Contact Sales |
| Total Features Listed | 8 | 9 |
| Integrations | 13 | 8 |
Getting Started Checklist
- Define your cold email outreach and email domain warming and deliverability requirements and monthly budget
- Estimate your expected email sending volume and warmup email volume to find the right tier
- List the integrations your team currently relies on
- Sign up for free trials or demos of both platforms
- Run a small test with each tool before making a commitment
- Evaluate the onboarding experience and support quality
Final Thoughts
Lemlist serves the cold email outreach side of an outbound stack and Warmup Inbox the email domain warming and deliverability side. Warmup Inbox offers a more accessible entry point at $19/mo, while Lemlist starts at $69/mo. Your decision should weigh pricing against the specific features that matter most for your workflow.
Start with a trial of each to see which platform fits your team's daily process. The best tool is the one your team actually uses consistently.
Pricing and features verified as of September 2026. Visit Lemlist and Warmup Inbox for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between Lemlist and Warmup Inbox?
- Lemlist is a cold email and multichannel sales engagement platform used for outreach, lead databases, and AI personalization, while Warmup Inbox is a dedicated email warmup tool focused on building sender reputation and inbox placement. They serve different parts of an outbound workflow rather than competing directly.
- Which tool is cheaper, Lemlist or Warmup Inbox?
- Warmup Inbox has the lower entry price at $19/mo for its Basic plan, compared to Lemlist's entry plan at $69/mo for the Email tier. Warmup Inbox also offers 4 pricing tiers versus Lemlist's 3, giving more granularity as needs scale.
- Can I use Lemlist and Warmup Inbox together?
- Yes, the article notes that many teams run one of each since they address different needs: Lemlist for sending campaigns and generating replies, and Warmup Inbox for building sender reputation and improving inbox placement before or alongside outreach.
- What integrations does Warmup Inbox support?
- Warmup Inbox connects with Gmail and Workspace, Outlook and Microsoft 365, Zoho Mail, Amazon SES, Mailgun, SendGrid, Sendinblue (Brevo), and any inbox using SMTP. These are all listed only by Warmup Inbox and not shared with Lemlist's integration list.
- Who should choose Lemlist over Warmup Inbox?
- Lemlist fits organizations with complex tech stacks needing broad integration support across its 13 listed integrations, enterprise buyers wanting custom pricing and dedicated support, sales teams running high-volume outbound campaigns, and agencies managing multiple client outreach programs.
About the author.
Tim Carden is CMO / CTO at RevenueFlow, which builds and operates outbound revenue engines for B2B companies. Studied at McGill University.
Tim Carden · CMO / CTO
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