Instantly vs Warmforge: Cold Email Platform vs Email Warmup Tool Comparison
Compare Instantly (cold email platform) and Warmforge (email warmup tool) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Instantly is a cold email platform starting at $47/mo built for sending campaigns and generating replies, while Warmforge is an email warmup tool starting at $12/mo built for warming mailboxes and improving deliverability. They solve different problems in the outbound stack, so many teams run both together rather than choosing one over the other.
Key takeaways
- Instantly's entry plan, Growth, costs $47/mo and includes 1000 uploaded contacts and 5000 emails monthly.
- Warmforge's entry plan, Email Warm Up, costs $12/mo per slot, with one slot covering one mailbox and one free placement test included monthly.
- Instantly offers 4 pricing tiers (Growth, Hypergrowth, Light Speed, and Enterprise) compared to Warmforge's 3 tiers.
- Instantly integrates with 9 tools including HubSpot, Salesforce, Pipedrive, Zapier, Make, n8n, Clay, Slack, and Google Calendar.
- Warmforge integrates with Google Workspace, Microsoft 365, Gmail, Outlook, and its native tools Salesforge and Mailforge.
Reviewed and updated September 2, 2026
Instantly vs Warmforge: Cold Email Platform vs Email Warmup Tool Comparison
Instantly (cold email platform) and Warmforge (email warmup tool) sit next to each other in many outbound stacks. They are not substitutes for each other on every job, so this comparison covers pricing, features, and integrations for each and points out where the two meet.
The Quick Answer
Instantly is a cold email platform for cold email outreach; Warmforge is an email warmup tool for email domain warming and deliverability. By each vendor's own wording, Instantly lists unlimited email accounts and unlimited email warmup, and Warmforge lists email warm up and monitoring & health checks.
Warmforge offers a lower entry point at $12/mo compared to Instantly at $47/mo.
If your priority is sending campaigns that land in the inbox and generate replies, Instantly is the one built for it; for building sender reputation and improving inbox placement, that is Warmforge. Many teams run one of each.
Understanding the Core Difference
Instantly is Cold email platform with unlimited email accounts, unlimited warmup, and a 450M+ B2B lead database.
Warmforge is Email warm up tool from the Forge Ecosystem that warms mailboxes with AI-written emails and tracks a per-mailbox Heat Score. Adds DNS, MX and blacklist health checks, placement tests and automatic removal of warm-up mail that lands in spam.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Growth
Email Warm Up (per slot)
Instantly Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Growth | $47/mo | 1000 Uploaded Contacts | 5000 Emails Monthly |
| Hypergrowth | $97/mo | 25 000 Uploaded Contacts | 125,000 emails/month |
| Light Speed | $358/mo | 100 000 Uploaded Contacts | 500 000 Emails Monthly |
| Enterprise | Contact Sales | 100 000+ Uploaded Contacts | 500 000+ Emails Monthly |
Source: Instantly Pricing
Warmforge Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Email Warm Up (per slot) | $12/mo | 1 slot covers 1 mailbox; 1 free slot included | Automated AI email warm up; 1 free placement test per month |
| Placement Tests Pro Plan | $39/mo | 50 mailboxes per test | 100 tests per month |
| Placement Tests Growth Plan | $169/mo | 250 mailboxes per test | Unlimited tests |
Source: Warmforge Pricing
Pricing Analysis
Warmforge offers the lower entry point ($12/mo vs $47/mo). Teams watching their budget will appreciate the savings, especially when starting out.
Instantly offers 4 pricing tiers compared to Warmforge's 3, giving you more granularity as you scale.
Features Breakdown
- Unlimited email accounts
- Unlimited email warmup
- Email verification
- Master inbox
- Campaign analytics
- A/B testing
- and 2 more listed below
- Email Warm Up
- Monitoring & Health Checks
- Placement Tests
- Deliverability Boost
- Always-On Warm Up
- Heat Score per mailbox
- and 2 more listed below
Instantly Key Features
- Unlimited email accounts
- Unlimited email warmup
- Email verification
- Master inbox
- Campaign analytics
- A/B testing
- AI-powered features
- Dedicated IP rotation (Light Speed+)
Warmforge Key Features
- Email Warm Up
- Monitoring & Health Checks
- Placement Tests
- Deliverability Boost
- Always-On Warm Up
- Heat Score per mailbox
- Health Checks on DNS and MX records and blacklist status
- Unique emails written by AI
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 Instantly
- Unlimited email accounts
- Unlimited email warmup
- Email verification
- Master inbox
- Campaign analytics
- A/B testing
- AI-powered features
- Dedicated IP rotation (Light Speed+)
Listed only by Warmforge
- Email Warm Up
- Monitoring & Health Checks
- Placement Tests
- Deliverability Boost
- Always-On Warm Up
- Heat Score per mailbox
- Health Checks on DNS and MX records and blacklist status
- Unique emails written by AI
Integration Ecosystem
Instantly Integrations
Instantly connects with: HubSpot, Salesforce, Pipedrive, Zapier, Make, n8n, Clay, Slack, Google Calendar.
Warmforge Integrations
Warmforge connects with: Google Workspace, Microsoft 365, Gmail, Outlook, Salesforge (native), Mailforge (native).
Integrations listed only by Instantly: HubSpot, Salesforce, Pipedrive, Zapier, Make, n8n, Clay, Slack, Google Calendar.
Integrations listed only by Warmforge: Google Workspace, Microsoft 365, Gmail, Outlook, Salesforge (native), Mailforge (native).
Use Case Recommendations
Best Fit for Instantly
- Budget-conscious teams looking for an affordable cold email platform
- Organizations with complex tech stacks needing broad integration support (9 integrations)
- Enterprise buyers who prefer custom pricing and dedicated support
Best Fit for Warmforge
- Budget-conscious teams looking for an affordable email warmup tool
- Teams launching new email domains for outreach
- Organizations recovering from deliverability issues
- Agencies managing warmup across multiple client domains
Feature Comparison Summary
| Feature | Instantly | Warmforge |
|---|---|---|
| Starting Price | $47/mo | $12/mo |
| Top Tier Price | Contact Sales | $169/mo |
| Total Features Listed | 8 | 8 |
| Integrations | 9 | 6 |
| Founded | N/A | 2024 |
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
Instantly serves the cold email outreach side of an outbound stack and Warmforge the email domain warming and deliverability side. Warmforge offers a more accessible entry point at $12/mo, while Instantly starts at $47/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 Instantly and Warmforge for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between Instantly and Warmforge?
- Instantly is a cold email platform designed for sending outreach campaigns, with unlimited email accounts, unlimited email warmup, and a 450M+ B2B lead database. Warmforge is an email warmup tool from the Forge Ecosystem that warms mailboxes with AI-written emails, tracks a per-mailbox Heat Score, and runs DNS, MX, and blacklist health checks.
- Which is cheaper, Instantly or Warmforge?
- Warmforge is cheaper at the entry level, starting at $12/mo per mailbox slot, compared to Instantly's Growth plan at $47/mo. Instantly's plan includes 1000 uploaded contacts and 5000 emails monthly, while Warmforge's entry plan covers one mailbox with one free placement test per month.
- Do I need both Instantly and Warmforge?
- Many teams do run both, since the two tools serve different jobs. Instantly is built for sending campaigns that land in the inbox and generate replies, while Warmforge is built for building sender reputation and improving inbox placement before and during outreach.
- What integrations does Instantly support that Warmforge doesn't?
- Instantly lists integrations with HubSpot, Salesforce, Pipedrive, Zapier, Make, n8n, Clay, Slack, and Google Calendar, totaling 9 integrations. Warmforge instead lists Google Workspace, Microsoft 365, Gmail, Outlook, and its native tools Salesforge and Mailforge, none of which overlap with Instantly's listed set.
- Who should use Warmforge over Instantly?
- Warmforge fits budget-conscious teams needing an affordable email warmup tool, teams launching new email domains for outreach, organizations recovering from deliverability issues, and agencies managing warmup across multiple client domains. It focuses on mailbox health and inbox placement rather than campaign sending.
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
Connect on LinkedIn →Explore more.
Ready to scale your outreach?
We build GTM engines that book real meetings. See the receipts.
Related articles.
Amplemarket vs Instantly: Sales Engagement Platform vs Cold Email Platform Comparison
Compare Amplemarket (sales engagement platform) and Instantly (cold email platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Mailmeteor vs Reply.io: Cold Email Platform Comparison
Compare Mailmeteor and Reply.io side by side. See pricing, features, and integrations to choose the right cold email platform for your needs.
Emelia vs Manyreach: Cold Email Platform Comparison
Compare Emelia and Manyreach side by side. See pricing, features, and integrations to choose the right cold email platform for your needs.
Emelia vs Salesforge: Cold Email Platform vs Sales Engagement Platform Comparison
Compare Emelia (cold email platform) and Salesforge (sales engagement platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
GMass vs PlusVibe: Cold Email Platform Comparison
Compare GMass and PlusVibe side by side. See pricing, features, and integrations to choose the right cold email platform for your needs.
Success.ai vs Yesware: Cold Email Platform Comparison
Compare Success.ai and Yesware side by side. See pricing, features, and integrations to choose the right cold email platform for your needs.