Mailwarm vs NuReply: Email Warmup Tool vs Cold Email Platform Comparison
Compare Mailwarm (email warmup tool) and NuReply (cold email platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Mailwarm is an email warmup tool built for domain warming and deliverability, priced from $79/mo, while NuReply is a cold email platform for outreach campaigns, priced from $25/mo. They serve different jobs rather than competing directly, so teams focused on sender reputation should pick Mailwarm, and teams focused on sending campaigns should pick NuReply, with many running both.
Key takeaways
- Mailwarm's Starter plan costs $79/mo for 1 mailbox or SMTP to warm and up to 50 warmup emails per day.
- NuReply's Starter plan costs $25/mo for 10,000 contacts, 500 AI credits, and 30,000 monthly emails across 50 email accounts.
- NuReply offers 6 pricing tiers ranging from $25/mo to $400/mo, compared to Mailwarm's 4 tiers ranging from $79/mo to a custom Tailored Plan.
- Mailwarm integrates with Gmail, Google Workspace, Outlook, Microsoft 365, Yahoo, and Custom SMTP, while NuReply integrates with Gmail, Outlook, HubSpot, Zapier, and SMTP.
- NuReply is operated by DuoCircle LLC and lists features such as Unlimited Warm-up, Unlimited Sequences, Cold Email Writer, and API Access.
Reviewed and updated September 5, 2026
Mailwarm vs NuReply: Email Warmup Tool vs Cold Email Platform Comparison
Mailwarm (email warmup tool) and NuReply (cold email platform) 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
Mailwarm is an email warmup tool for email domain warming and deliverability; NuReply is a cold email platform for cold email outreach. By each vendor's own wording, Mailwarm lists b2b & b2c warm up and spam score monitoring, and NuReply lists unlimited warm-up and unlimited sequences.
NuReply offers a lower entry point at $25/mo compared to Mailwarm at $79/mo.
If your priority is building sender reputation and improving inbox placement, Mailwarm is the one built for it; for sending campaigns that land in the inbox and generate replies, that is NuReply. Many teams run one of each.
Understanding the Core Difference
Mailwarm is Email warmup and deliverability platform that generates engagement across a network of aged real inboxes and includes a deliverability expert on every plan. Each interaction produces several positive signals, such as marking as non-spam, opening, marking as important and replying.
NuReply is AI cold email outreach platform that personalizes each email with AI, warms up sender reputation and runs multi-step campaigns across many connected sending accounts. Plans are metered by email accounts, AI credits, stored contacts and monthly email volume. Operated by DuoCircle LLC.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Starter
Starter
Mailwarm Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Starter | $79/mo | 1 mailbox/SMTP to warm; 1 user | Up to 50 warmup emails/day |
| Growth | $189/mo | 3 mailboxes/SMTPs to warm; 2 users | Up to 200 warmup emails/day |
| Scale | $549/mo | 10 mailboxes/SMTPs to warm; 5 users | Up to 500 warmup emails/day |
| Tailored Plan | Contact Sales | unlimited mailboxes, users | unlimited warmup emails, and replies |
Source: Mailwarm Pricing
NuReply Pricing (as of September 2026)
| Plan | Price | Contacts | Emails |
|---|---|---|---|
| Starter | $25/mo | 10,000 contacts; 500 AI credits | 30,000 monthly emails; 50 email accounts |
| Launch | $50/mo | 25,000 contacts; 1,200 AI credits | 80,000 monthly emails; 100 email accounts |
| Growth | $100/mo | 50,000 contacts; 3,000 AI credits | 160,000 monthly emails; 250 email accounts |
| Scale | $200/mo | 100,000 contacts; 5,000 AI credits | 350,000 monthly emails; 500 email accounts |
| Pro | $300/mo | 175,000 contacts; 7,000 AI credits | 700,000 monthly emails; 800 email accounts |
| Enterprise | $400/mo | 250,000 contacts; 9,000 AI credits | 1,000,000 monthly emails; 1,500 email accounts |
Source: NuReply Pricing
Pricing Analysis
NuReply offers the lower entry point ($25/mo vs $79/mo). Teams watching their budget will appreciate the savings, especially when starting out.
NuReply offers 6 pricing tiers compared to Mailwarm's 4, giving you more granularity as you scale.
Features Breakdown
- B2B & B2C warm up
- Spam score monitoring
- Provider-Level warmup
- Warmup your email content
- Authentication fix tools
- No IMAP access required
- and 3 more listed below
- Unlimited Warm-up
- Unlimited Sequences
- Cold Email Writer
- Sentiment Analysis
- Multi-Variant Testing
- ESP Routing
- and 2 more listed below
Mailwarm Key Features
- B2B & B2C warm up
- Spam score monitoring
- Provider-Level warmup
- Warmup your email content
- Authentication fix tools
- No IMAP access required
- Progressive volume ramp-up to avoid spam filters
- SPF, DKIM, and DMARC validation
- Blacklist detection across major databases
NuReply Key Features
- Unlimited Warm-up
- Unlimited Sequences
- Cold Email Writer
- Sentiment Analysis
- Multi-Variant Testing
- ESP Routing
- API Access
- Email Warmer
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 Mailwarm
- B2B & B2C warm up
- Spam score monitoring
- Provider-Level warmup
- Warmup your email content
- Authentication fix tools
- No IMAP access required
- Progressive volume ramp-up to avoid spam filters
- SPF, DKIM, and DMARC validation
- Blacklist detection across major databases
Listed only by NuReply
- Unlimited Warm-up
- Unlimited Sequences
- Cold Email Writer
- Sentiment Analysis
- Multi-Variant Testing
- ESP Routing
- API Access
- Email Warmer
Integration Ecosystem
Mailwarm Integrations
Mailwarm connects with: Gmail, Google Workspace, Outlook, Microsoft 365, Yahoo, Custom SMTP.
NuReply Integrations
NuReply connects with: Gmail, Outlook, HubSpot, Zapier, SMTP.
Shared Integrations
Both tools integrate with: Gmail, Outlook.
Integrations listed only by Mailwarm: Google Workspace, Microsoft 365, Yahoo, Custom SMTP.
Integrations listed only by NuReply: HubSpot, Zapier, SMTP.
Use Case Recommendations
Best Fit for Mailwarm
- Teams that need a wide feature set (9 capabilities listed)
- Organizations with complex tech stacks needing broad integration support (6 integrations)
- Enterprise buyers who prefer custom pricing and dedicated support
Best Fit for NuReply
- Budget-conscious teams looking for an affordable cold email platform
- Sales teams running high-volume outbound email campaigns
- Agencies managing multiple client outreach programs
- SDR teams focused on pipeline generation
Feature Comparison Summary
| Feature | Mailwarm | NuReply |
|---|---|---|
| Starting Price | $79/mo | $25/mo |
| Top Tier Price | Contact Sales | $400/mo |
| Total Features Listed | 9 | 8 |
| Integrations | 6 | 5 |
Getting Started Checklist
- Define your email domain warming and deliverability and cold email outreach requirements and monthly budget
- Estimate your expected warmup email volume and email sending 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
Mailwarm serves the email domain warming and deliverability side of an outbound stack and NuReply the cold email outreach side. NuReply offers a more accessible entry point at $25/mo, while Mailwarm starts at $79/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 Mailwarm and NuReply for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between Mailwarm and NuReply?
- Mailwarm is an email warmup and deliverability platform that generates engagement across a network of aged real inboxes, while NuReply is an AI cold email outreach platform that personalizes emails, warms up sender reputation, and runs multi-step campaigns across connected sending accounts. They address different parts of the outbound stack rather than competing head to head.
- Which is cheaper, Mailwarm or NuReply?
- NuReply has the lower entry price at $25/mo compared to Mailwarm's $79/mo Starter plan. NuReply also offers 6 pricing tiers up to $400/mo, giving more granularity as usage scales, while Mailwarm offers 4 tiers topping out at a custom Tailored Plan for unlimited mailboxes and users.
- Do Mailwarm and NuReply integrate with the same tools?
- They share Gmail and Outlook integrations. Beyond that, Mailwarm also connects with Google Workspace, Microsoft 365, Yahoo, and Custom SMTP, while NuReply also connects with HubSpot, Zapier, and SMTP, so each has integrations the other does not list.
- Can I use Mailwarm and NuReply together?
- Yes, the article notes that many teams run one of each. Mailwarm is built for building sender reputation and improving inbox placement, while NuReply is built for sending campaigns that land in the inbox and generate replies, so they can complement each other in the same outbound stack.
- Who is Mailwarm best suited for?
- Mailwarm is best suited for teams that need a wide feature set, listing 9 capabilities such as spam score monitoring, provider-level warmup, and blacklist detection, as well as organizations with complex tech stacks needing broad integration support across 6 listed integrations.
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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