Inbox Warmup vs TrulyInbox: Email Warmup Tool Comparison

Inbox Warmup vs TrulyInbox: Email Warmup Tool Comparison

Inbox Warmup and TrulyInbox compete head-to-head in the email domain warming and deliverability space. This guide compares their pricing tiers, feature sets, and integration ecosystems to help you make a confident decision.

The Quick Answer

By each vendor's own wording, Inbox Warmup lists smtp diagnostics and dns authentication, while TrulyInbox lists unlimited email account connections on all paid plans and customizable reply rate per plan (10% to 65%). A capability both offer can appear under different names, so read both feature lists below.

TrulyInbox offers a lower entry point at $0/mo compared to Inbox Warmup at $39/mo.

If your priority is building sender reputation and improving inbox placement, both tools target it. The right choice depends on your budget, team size, and the specific capabilities you need most.

Understanding the Core Difference

Inbox Warmup is Inbox warm-up and sender reputation platform that connects SMTP infrastructure, authenticates sending domains (SPF, DKIM, DMARC), increases activity gradually, monitors reputation signals and enforces hourly and monthly sending limits from one dashboard.

TrulyInbox is Cost-effective email warmup platform that supports unlimited inbox connections on paid plans, with customizable reply rates, ramp-up schedules, and real-time deliverability scoring.

The two platforms take different approaches to solving the same core challenge.

Pricing Comparison

$39/moInbox Warmup entry plan

Launch

FreeTrulyInbox entry plan

Free

Inbox Warmup Pricing (as of September 2026)

Source: Inbox Warmup Pricing

TrulyInbox Pricing (as of September 2026)

Source: TrulyInbox Pricing

Pricing Analysis

TrulyInbox offers the lower entry point ($0/mo vs $39/mo). Teams watching their budget will appreciate the savings, especially when starting out.

TrulyInbox offers 5 pricing tiers compared to Inbox Warmup's 4, giving you more granularity as you scale.

TrulyInbox includes a free tier, which is helpful for evaluating the platform without upfront cost.

Features Breakdown

Inbox Warmup lists

• SMTP diagnostics
• DNS authentication
• Smart warmup
• Reputation Center
• Campaign controls
• Admin-managed SMTP
• and 1 more listed below

TrulyInbox lists

• Unlimited email account connections on all paid plans
• Customizable reply rate per plan (10% to 65%)
• Customizable email ramp-up schedules
• Human-like email interaction simulation
• Real-time deliverability score tracking
• Multiple email open simulation for natural engagement
• and 2 more listed below

Inbox Warmup Key Features

• SMTP diagnostics
• DNS authentication
• Smart warmup
• Reputation Center
• Campaign controls
• Admin-managed SMTP
• Free Tools

TrulyInbox Key Features

• Unlimited email account connections on all paid plans
• Customizable reply rate per plan (10% to 65%)
• Customizable email ramp-up schedules
• Human-like email interaction simulation
• Real-time deliverability score tracking
• Multiple email open simulation for natural engagement
• Advanced warmup settings on higher plans
• Free forever plan with 1 inbox

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 Inbox Warmup

• SMTP diagnostics
• DNS authentication
• Smart warmup
• Reputation Center
• Campaign controls
• Admin-managed SMTP
• Free Tools

Listed only by TrulyInbox

• Unlimited email account connections on all paid plans
• Customizable reply rate per plan (10% to 65%)
• Customizable email ramp-up schedules
• Human-like email interaction simulation
• Real-time deliverability score tracking
• Multiple email open simulation for natural engagement
• Advanced warmup settings on higher plans
• Free forever plan with 1 inbox

Integration Ecosystem

Inbox Warmup Integrations

Inbox Warmup connects with: SMTP.

TrulyInbox Integrations

TrulyInbox connects with: Gmail, Google Workspace, Outlook, Microsoft 365, Zoho Mail, SMTP, Yahoo Mail.

Shared Integrations

Both tools integrate with: SMTP.

Integrations listed only by TrulyInbox: Gmail, Google Workspace, Outlook, Microsoft 365, Zoho Mail, Yahoo Mail.

Use Case Recommendations

Best Fit for Inbox Warmup

• Budget-conscious teams looking for an affordable email warmup tool
• Enterprise buyers who prefer custom pricing and dedicated support
• Teams launching new email domains for outreach
• Organizations recovering from deliverability issues

Best Fit for TrulyInbox

• Budget-conscious teams looking for an affordable email warmup tool
• Teams that need a wide feature set (8 capabilities listed)
• Organizations with complex tech stacks needing broad integration support (7 integrations)
• Teams that want to start free and scale up as needs grow

Feature Comparison Summary

Getting Started Checklist

1. Define your email domain warming and deliverability requirements and monthly budget
2. Estimate your expected warmup email volume to find the right tier
3. List the integrations your team currently relies on
4. Sign up for free trials or demos of both platforms
5. Run a small test with each tool before making a commitment
6. Evaluate the onboarding experience and support quality

Final Thoughts

Inbox Warmup and TrulyInbox both serve the email domain warming and deliverability market. TrulyInbox offers a more accessible entry point, while Inbox Warmup starts at $39/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 Inbox Warmup and TrulyInbox for current information.