⚡ Quick Verdict:
- Pricing: Instantly’s growth plan starts at $30/month. Warmy starts at $49/month per inbox.
- Best for: Instantly for full cold email outreach. Warmy for pure email warm up only.
- Key difference: Instantly bundles warm up, sending, leads, and unibox. Warmy focuses only on warm up.
- Our pick: Instantly for most users. It replaces 3-4 tools with one platform.
Choosing between Instantly and Warmy comes down to one question.
Do you need a full cold email platform or just an email warm up tool?
Both tools help fix your sender reputation and beat spam filters.
But they solve very different parts of the cold emailing puzzle.
Instantly turns leads into booked meetings through automated outreach.
Warmy focuses only on warming up emails to land in the primary inbox.
Overview
This Instantly vs Warmy comparison covers pricing, features, deliverability, and lead finder tools.
We also break down who each tool serves best.
Our sources include published specs, G2 reviews, and Trustpilot data.
Our writers also spent hands-on time inside both platforms.
By the end, you will know which tool fits your business.
What is Instantly?
Instantly AI is a sales engagement platform and cold email outreach tool.
It uses AI to help sales and marketing teams automate lead generation.
The platform handles outreach campaigns, large-scale email campaigns, and email deliverability.
Instantly lets you connect unlimited email accounts to send thousands of cold emails.
Instantly users send emails at scale and manage all replies in one place called Unibox.
The platform’s AI features include subject lines, email content, and follow ups.
🏆 Winner: Instantly
The all-in-one tool for cold outreach. Connect unlimited email accounts. Send thousands of emails per day with built-in warm up.
Instantly Pricing
Here’s what Instantly costs in 2026. The growth plan starts cheap.
| Plan | Price | Best For |
|---|---|---|
| Growth | $30/month | Solo founders sending emails |
| Hypergrowth | $77.60/month | Small teams scaling outreach |
| Light Speed | $286.30/month | Agencies sending high volume |
| Enterprise | Custom | Large sales teams with custom needs |
Pricing verified March 2026. All plans include unlimited email warmup.
Free trial: 14 days, no credit card needed.
Money-back guarantee: Cancel anytime. No refund policy listed.
📌 Note: Every plan supports unlimited accounts and free unlimited email warmup. The cheapest plan starts at $30/month for email-only campaigns. Users have reported saving over $10,000 per year on warm-up alone after switching to Instantly.
⚠️ Warning: The B2B lead database (SuperSearch) is a separate add-on with its own pricing. Verified leads come in three different plans.
Key Benefits of Instantly
Here’s what makes Instantly worth considering for your cold outreach:
- Unlimited Email Accounts: Connect and rotate sending volume across an unlimited number of email accounts. This protects your domain’s sending reputation across separate campaigns.
- Largest Warm Up Network: The warmup feature has over 1.5 million users. That makes it the largest peer-to-peer deliverability network for sender reputation.
- B2B Lead Finder: The Instantly lead finder taps into 160M+ verified leads. Filter by various criteria to build targeted lead lists.
- AI Campaign Builder: The AI assistant generates subject lines, email content, and sequences. It uses custom variables and conditional logic for personalized emails.
- Unified Inbox (Unibox): Manage all campaign replies from one place. Mark leads, close deals, and respond fast.
- Email Validation Built-In: Built-in email validation reduces bounce rates. Smart scheduling and inbox rotation send thousands of emails safely.
- Zapier Integration: Connect Instantly to thousands of apps. Push verified leads into your CRM automatically.
What Our Team Noticed
Our writer signed up for Instantly and ran a small outreach test. Here’s what stood out from that hands-on time:
Instantly Pros & Cons
✅ Pros
- Unlimited email accounts on every plan, including the $30 growth plan
- Free unlimited email warmup included with all paid plans
- 160M+ B2B lead database available through SuperSearch add-on
- AI categorizes responses by intent for early-stage conversations
- Highest deliverability network with 1.5M+ active inboxes
❌ Cons
- Lead finder requires a separate paid add-on (not included in main plan)
- Email personalization features are more basic than SmartReach IO
- Campaign creation is simpler than Lemlist’s complex sequence options
- Relies on third-party integrations more than native CRM connections
What is Warmy?
Warmy is an email deliverability tool focused on automatic warm up.
Warmy works by gradually building sender reputation through real human interactions.
The tool uses artificial intelligence to mimic natural inbox behavior.
Warmy reviews on Trustpilot rate the service 4.6/5 (“Excellent”).
Many warmy customers use the platform to fix inbox placement issues.
The team behind Warmy also offers free tools for email deliverability testing.
Runner Up: Warmy
The art automatic warm up tool. AI-driven approach to email warm. Built for businesses that need higher inbox placement.
Warmy Pricing
Warmy IO offers five different pricing plans for its warm up service.
| Plan | Price | Best For |
|---|---|---|
| Starter | $49/month | Smaller companies testing warm up |
| Business | $129/month | Growing teams sending outreach emails |
| Premium | $189/month | Active sales teams |
| Expert | $279/month | Heavy email marketing campaigns |
| Platinum | $429/month | Enterprises with high volumes |
Pricing verified March 2026. Plans are billed per inbox.
Free trial: Warmy IO provides a 7-day free trial. No credit card required to start.
Money-back guarantee: Not publicly listed. Contact support for refund questions.
📌 Note: Plans primarily differ in the number of warm up emails sent daily. The cheapest plan, the starter plan, costs $49/month and does not include advanced warm-up features.
⚠️ Warning: Warmy IO is not the cheapest option. Pricing scales fast for teams with many inboxes. Multiple inboxes can push costs above $2,000/month.
Key Benefits of Warmy
Here’s why Warmy is a solid choice for email marketers:
- AI-Driven Warm Up Process: Adeline AI simulates real conversations to build sender reputation. Users have noted the AI-driven approach is impressive.
- Deliverability Test Tool: Check your email deliverability score with a one-click test. The tool shows whether messages land in inbox or spam folder.
- Template Checker: Test outreach emails against spam filters before sending. Helps avoid being blacklisted.
- Google Postmaster Integration: Track inbox placement and sender reputation directly. Real insights into how Gmail treats your domain.
- 30+ Languages Support: Warm up emails in over 30 languages. Useful for international email marketing campaigns.
- Domain Warming: Gradually warms the domain itself, not just the mailbox. This protects new domains from being marked spam.
- Helpful Customer Support: Responsive support team is often highlighted in Warmy reviews. The service team helps with setup, access to free tools, and the warm up process.
What Our Team Noticed
Our writer signed up for Warmy and ran the warm up process for a week. Here’s what stood out:
Warmy Pros & Cons
✅ Pros
- Increases email deliverability rates and inbox placement over time
- Powerful warm up tool with 30+ language support for global reach
- 4.6/5 Trustpilot rating with strong reviews on customer support
- Free tools for testing deliverability and template quality
- AI-driven approach to email warm helps avoid bounce rates and spam
❌ Cons
- Not the cheapest option, with starter plan at $49/month per inbox
- Has a learning curve, especially for non-technical users
- Not an overnight fix, requires weeks for warm up process to mature
- Wait times on support can be slow during peak periods
Feature Comparison
Ready to dive into a detailed comparison of Instantly vs Warmy? We’ll explore 10 standout features so you can make informed decisions about which tool fits your business.
| Feature | Instantly | Warmy |
|---|---|---|
| Starting Price | $30/month | $49/month |
| Unlimited Email Accounts | ✅ | ❌ |
| Email Warm Up | ✅ (Free) | ✅ (Core focus) |
| B2B Lead Database | ✅ (160M+) | ❌ |
| Campaign Builder | ✅ | ❌ (Basic sequences) |
| AI Email Content | ✅ | ✅ (Adeline AI) |
| Unified Inbox | ✅ (Unibox) | ❌ |
| Deliverability Test | ❌ | ✅ |
| 30+ Language Warm Up | ❌ | ✅ |
| Best For | Full cold emailing | Pure email warm up |
1. Email Warm Up & Sender Reputation
Instantly: The unlimited email warmup feature is included free in every paid plan. The warm up network has over 1.5 million users, making it the largest and most diverse peer-to-peer deliverability pool. The platform simulates email opens and reads to help improve sender reputation.
Warmy: The art automatic warm up process is the entire product. Adeline AI handles real human interactions to build sender reputation. The warm up process supports 30+ languages, which is crucial for international email outreach.
2. Cold Emailing & Campaign Builder
Instantly: The campaign builder lets you create separate campaigns for different sales strategies. You can send thousands of cold emails per day across all your sending accounts. Smart scheduling controls send rate to protect each email account.
Warmy: The sequence builder handles basic email sequences but isn’t built for full outreach campaigns. Warmy is not designed to manage large-scale email marketing campaigns. Most users pair Warmy with another tool for actual sending.
⚠️ Warning: If you need to run cold email campaigns, Warmy alone is not enough. You will need a separate sending tool.
3. B2B Lead Database & Lead Lists
Instantly: The Instantly lead finder is an optional add-on called SuperSearch. It taps into a B2B lead database of over 160 million B2B contacts. You can filter by various criteria including LinkedIn URL, job title, and company size.
Warmy: Warmy does not include a lead finder. There’s no B2B lead database for finding potential clients. You bring your own lead lists from another source.
4. AI Features & Personalization
Instantly: Instantly’s AI assistant generates email copy, subject lines, and full sequences. It uses custom variables and conditional logic for personalized emails. The AI also categorizes responses by intent to aid in early-stage conversations.
Warmy: Adeline AI focuses on the warm up process itself. It creates real human interactions to teach Gmail and Outlook that your domain is trustworthy. AI here works behind the scenes, not in your email content.
5. Unified Inbox & Reply Management
Instantly: The unified inbox (called Unibox) pulls every reply from all your sending accounts into one place. You can mark leads, send follow ups, and respond fast. It saves hours when running multiple campaigns at once.
Warmy: Warmy has no unified inbox feature. The platform is not built for replying or managing conversations. Reply handling happens in your regular email client.
6. Email Deliverability Tools
Instantly: The deliverability network includes inbox rotation across all your sending accounts. The platform’s deliverability focus is evident in its integrated email warming service, which is included in the basic package. Built-in lookalike domains help protect your main domain.
Warmy: Warmy gives you free tools to track deliverability. You can check your email deliverability score in seconds. The template checker tests messages against spam filters before you send.
7. Campaign Analytics & Insights
Instantly: Campaign analytics show open rates, response rates, and reply intent in real time. The platform provides advanced analytics to help users improve email campaigns based on performance metrics. Dashboard insights make it easy to spot which subject lines and email content win replies.
Warmy: Analytics focus on warm up progress and inbox placement. Google Postmaster integration gives real domain reputation data. You can track sender reputation improvement week by week.
8. Email Validation & Bounce Protection
Instantly: Built-in email validation cleans verified leads before sending. The system checks every email address to reduce bounce rates. This protects your sending reputation across separate campaigns.
Warmy: Warmy includes email validation as part of its deliverability toolkit. The SPF record generator helps fix domain authentication issues. Both tools work together to lower bounce rates.
9. Integrations & Zapier
Instantly: Native Zapier integration connects to thousands of apps and CRMs. You can push verified leads from the lead finder into your sales pipeline. Instantly relies more on third-party integrations than direct CRM connections.
Warmy: Warmy integrates with most major email service providers. It works with Gmail, Outlook, and dedicated sending tools. The platform connects to Instantly itself, since many users run both.
10. Setup & Onboarding Tools
Instantly: Setup focuses on connecting email accounts and launching campaigns fast. The campaign builder walks you through subject lines, email content, and lead lists. Onboarding includes templates and example outreach campaigns.
Warmy: Warmy includes a signature builder and template checker to polish outbound messages. The seed list helps you test how messages land in real inboxes. Setup is straightforward but the full warm up process takes weeks to mature.
Pricing & Cost
Let’s compare the pricing plans side by side.
| Plan Tier | Instantly | Warmy |
|---|---|---|
| Starter / Entry | $30/month (Growth) | $49/month (Starter) |
| Mid-Tier | $77.60/month (Hypergrowth) | $129/month (Business) |
| Pro | $286.30/month (Light Speed) | $189-$279/month |
| Top Tier | Custom (Enterprise) | $429/month (Platinum) |
| Free Trial | 14 days | 7 days |
Instantly: The growth plan at $30/month gives you unlimited email accounts, unlimited email warmup, campaign builder, and Unibox. That’s a lot of features for the price. Pricing is competitive compared to other tools.
Warmy: The starter plan at $49/month covers only basic warm up. Plans differ mainly in daily warm-up email volume. Heavy users with multiple inboxes can see total costs above $2,000/month.
Different Scenarios
| If You Need… | Choose | Why |
|---|---|---|
| Tight budget | Instantly | $30/month vs $49/month |
| Full cold email platform | Instantly | Send, warm up, leads in one |
| Pure email warm up only | Warmy | Deep deliverability focus |
| Multi-language warm up | Warmy | 30+ languages supported |
| B2B lead finder | Instantly | 160M+ verified leads |
| Beginner-friendly setup | Instantly | One platform, less learning curve |
💰 Your Budget
Instantly’s growth plan is $30/month with everything bundled in. Warmy starts at $49/month but only covers warm up.
🔌 Your Tech Stack
Instantly uses Zapier integration to connect to your CRM. Warmy plugs into existing sending tools rather than replacing them.
📝 Your Sales Process
If you need to run outreach campaigns and close deals, Instantly is the best tool. If you just need to fix sender reputation, Warmy works.
🎓 Your Experience Level
Instantly is straightforward for beginners running their first cold email campaigns. Warmy has a learning curve and works best for users who already understand deliverability.
🆓 Free Trials and Demos
Test before you commit. Instantly offers a 14-day free trial. Warmy offers a 7-day free trial.
🛟 Support Options
Both platforms offer email support and documentation. Warmy reviews highlight excellent customer service. Instantly users praise the knowledge base for quick answers.
Switching Guide
Already using one tool? Here’s what to expect if you switch.
🔄 Switching from Instantly to Warmy?
✅ What you’ll gain:
- Deeper warm up testing with Google Postmaster integration
- Warm up in 30+ languages for global teams
- Free deliverability testing tools
❌ What you’ll lose:
- Unlimited email accounts on a single plan
- B2B lead database with 160M+ contacts
- Unibox unified inbox for replies
📋 How to switch:
- Export your lead lists from Instantly
- Sign up for Warmy and connect your mailboxes
- Pair Warmy with a separate sending tool for actual outreach
🔄 Switching from Warmy to Instantly?
✅ What you’ll gain:
- Full campaign builder for outreach campaigns
- Free unlimited email warmup on every plan
- Built-in lead finder with verified leads
❌ What you’ll lose:
- 30+ language warm up support
- Google Postmaster integration for domain tracking
- Free standalone deliverability test tools
📋 How to switch:
- Pause your Warmy warm up process
- Create an Instantly account and connect your sending accounts
- Turn on free warmup and import your lead lists
What Our Review Didn’t Cover
This comparison focused on solo founders, small sales teams, and agencies. We didn’t test enterprise SSO setups or audit Warmy’s high-volume Platinum plan at scale. Custom Enterprise plans for Instantly weren’t part of this review. If you run a large sales team or have strict compliance needs, your priorities may differ from what we’ve covered here.
Final Verdict
| Category | Winner |
|---|---|
| 💰 Pricing | Instantly |
| 🚀 Core Features | Instantly |
| 🔥 Email Warm Up Depth | Warmy |
| 🎯 Cold Email Campaigns | Instantly |
| 👶 Ease of Use | Instantly |
| 🌍 Multi-Language Warm Up | Warmy |
| 📊 Campaign Analytics | Instantly |
| 🔌 Integrations | Instantly |
| 🏆 Overall Winner | Instantly |
🏆 WINNER: INSTANTLY
Instantly wins 6 out of 8 categories.
Best for: Cold emailing at scale, sales engagement, lead generation, automated outreach
Instantly and Warmy are two very different products.
Instantly is a full sales engagement platform with email warm up built in.
Warmy is a dedicated email deliverability tool focused on warm up only.
Warmy is excellent for teams that already have a sending tool. The art automatic warm up process works well for domain warming.
Instantly bundles advanced automations, interacting with leads through one unified inbox, and lead automation in a single site.
However, if you need to scale your outreach and book meetings, Instantly is the better choice. Join thousands of users on the growth plan at $30 for more features and more value.
More of Instantly Compared
Here’s how Instantly stacks up against other top tools in cold email and lead generation:
Instantly vs Apollo
Instantly wins on: Unlimited email accounts, larger warm up network (1.5M+ users), cheaper growth plan
Apollo wins on: Larger contact database, dialer for phone outreach, native CRM features
Instantly vs Lemlist
Instantly wins on: Unlimited sending accounts, free email warmup, simpler campaign setup
Lemlist wins on: Complex campaign creation, image personalization, multichannel sequences
Instantly vs Smartlead
Instantly wins on: Built-in lead finder (SuperSearch), more polished AI features, faster onboarding
Smartlead wins on: Master inbox for agencies, more granular sub-account control
Instantly vs Saleshandy
Instantly wins on: Larger warm up pool, unified Unibox, AI response intent categorization
Saleshandy wins on: Email tracking for Gmail, lower entry pricing for small teams
More of Warmy Compared
Here’s how Warmy stacks up against other warm up tools and deliverability services:
Warmy vs Warmbox
Warmy wins on: 30+ language support, Adeline AI engagement, Google Postmaster integration
Warmbox wins on: Lower starting price, simpler dashboard, faster setup
Warmy vs Maildoso
Warmy wins on: Stronger Trustpilot reviews (4.6/5), more advanced AI warm up, template checker tool
Maildoso wins on: Bundled inbox provisioning, lower per-inbox cost at scale
Warmy vs Manyreach
Warmy wins on: Dedicated deliverability focus, free standalone testing tools, deeper insights
Manyreach wins on: Built-in sending platform, unlimited inboxes on flat pricing
Warmy vs Mailshake
Warmy wins on: Specialized warm up depth, domain warming, multi-language inbox seeding
Mailshake wins on: Full sending platform, sales engagement features, native CRM integration
Frequently Asked Questions
Is Instantly AI worth it?
Yes. The growth plan at $30 includes unlimited email accounts, free warmup, and Unibox. Most users save thousands per year by replacing several tools.
What does Warmy do?
Warmy automates the email warm up process using AI. It builds sender reputation and improves inbox placement so outreach emails avoid the spam folder.
How does email warm up work?
Warm up sends small batches of emails to friendly inboxes. Replies and opens teach providers your domain is trustworthy, lifting deliverability over weeks.
Is Instantly warm up free?
Yes. Free unlimited email warmup is included in every paid plan, including the $30 growth plan. The network covers over 1.5 million inboxes.
What is better than Instantly AI?
Lemlist offers richer personalization. Apollo has a larger contact database. For dedicated warm up only, Warmy can outperform Instantly on language depth.
English 
Spanish 
Chinese 
German 
French 
Arabic 
Russian 
Portuguese 
Japanese 
Korean 
Italian 
Turkish 
Dutch 
Polish 
Indonesian 
Thai 
Vietnamese 