7 Best TrulyInbox Alternatives — 2025

While TrulyInbox offers affordable email warmup for cold outreach teams, it falls short for e-commerce brands battling Gmail's Promotions tab. The market now offers powerful alternatives ranging from specialized inbox placement tools like Mailmend to enterprise-grade warmup platforms like Warmforge. This guide examines each platform's strengths, pricing models, and ideal use cases to help you find the right solution beyond TrulyInbox's limitations.

Key Takeaways

• E-commerce brands need inbox placement, not warmup: Traditional warmup tools like TrulyInbox address sender reputation for cold email—but e-commerce promotional emails require algorithmic solutions that move campaigns from the Promotions tab to Primary inbox

• Time-to-results varies dramatically: Mailmend delivers Day 1 revenue impact while warmup tools require 2-6 weeks to build sender reputation—evaluate based on your campaign urgency

• Pricing models favor different use cases: TrulyInbox's starter pricing suits multi-account cold email, while Mailmend's ROI-focused model delivers 50-100% email revenue increases for e-commerce brands

• Integration depth determines workflow efficiency: Mailmend offers native Klaviyo integration with drag-and-drop implementation, while TrulyInbox requires SMTP configuration across generic email providers

Email deliverability determines whether your messages reach subscribers' primary inboxes or disappear into spam folders and promotional tabs. For e-commerce brands, the difference between Primary and Promotions tab placement translates directly to revenue—emails in the Primary inbox receive significantly higher visibility and engagement.

Traditional email warmup tools solve a specific problem: building sender reputation for cold outreach campaigns. They gradually increase sending volume to establish trust with email providers. However, e-commerce brands using platforms like Klaviyo face a different challenge entirely.

Gmail's algorithms categorize promotional emails based on content signals, sending patterns, and template characteristics—not just sender reputation. A brand with perfect deliverability metrics can still watch every campaign land in the Promotions tab, where open rates drop significantly compared to Primary inbox placement.

This distinction matters because warmup tools simply cannot address promotional tab categorization challenges that many e-commerce brands face.

1. Mailmend — Primary Inbox Placement for E-commerce

Mailmend stands apart as the only solution specifically designed to move e-commerce marketing emails from Gmail's Promotions tab to the Primary inbox without requiring content changes.

Key Features:

• Proprietary algorithmic inbox placement technology

• Native Klaviyo integration with drag-and-drop code implementation

• Day 1 measurable results versus weeks of warmup

• Zero changes required to email content, copy, or technical infrastructure

• Built-in A/B testing through Klaviyo's native functionality

• Dedicated 1-to-1 partnership support model

Performance Metrics:

• Up to 82% open rate increases reported by e-commerce clients

• 50-100% email revenue growth across client base

• Setup completes in less than 15 minutes

Pricing Structure:

• Custom ROI-based pricing

• Revenue satisfaction guarantee

• No long-term warmup investment required

Mailmend's approach fundamentally differs from warmup tools. Rather than gradually building sender reputation over weeks, the platform uses proprietary AI to analyze Gmail's "promotional threshold" factors and generate custom code calibrated specifically for each Klaviyo account.

The case studies speak for themselves: Dr. Squatch achieved 112% email revenue increase with 13% increase in open rates and 18% increase in CTR within 24 hours. StickerYou saw their 20% boost grow to 100% increase by month one.

For e-commerce brands using Klaviyo—the dominant ESP in the space—Mailmend eliminates the fundamental disconnect between traditional warmup approaches and actual inbox placement challenges. While warmup tools help cold emailers avoid spam folders, Mailmend specifically addresses the promotional categorization issue that costs e-commerce brands revenue every day.

2. Warmforge — Enterprise-Grade DNS Control

Warmforge positions itself as the premium warmup solution for agencies and teams managing 30+ email accounts, offering advanced technical control that TrulyInbox lacks.

Core Capabilities:

• Automated SPF, DKIM, and DMARC configuration

• Zero inbox drops reported across 30-100+ accounts

• Full control over DNS, warmup behavior, and routing

• Real-time spam alerts and domain health tracking

• Advanced monitoring with bounce tracking

• Dedicated account manager for enterprise tier

Pricing Tiers:

• Email Warmup starts at $9/slot per month when billed annually

• Pro Plan: $32.5/month annually

• Growth Plan: $140.8/month annually

Warmforge excels where TrulyInbox struggles: at scale. While TrulyInbox users report instability beyond 15 inboxes, Warmforge maintains stable performance across enterprise deployments.

The platform's auto DNS setup—automatically configuring SPF, DKIM, and DMARC—eliminates technical barriers that trip up non-developers. However, the interface can feel complex for beginners, and DNS setup may require initial configuration time.

Best For: Agencies and sales teams managing 30+ cold email accounts who need enterprise-grade reliability and advanced technical control.

3. Warmy.io — AI-Driven Behavioral Warmup

Warmy.io brings artificial intelligence to email warmup, using behavioral algorithms that adapt based on mailbox age and sender history.

Standout Features:

• AI-driven warmup adjusting to mailbox characteristics

• 35,000+ genuine high-quality inboxes in warmup network

• Google Postmaster Tools integration for Gmail-specific insights

• Custom language and topic selection

• Comprehensive real-time deliverability analytics

• Peer quality selection for warmup network matching

Pricing Structure: Volume-based pricing in B2B sender, B2C sender, and custom plans.

Warmy.io's behavioral algorithms prevent triggering spam filters by adjusting warmup patterns based on individual mailbox characteristics. The main drawback: expensive scaling with linear cost increases.

Best For: B2B companies prioritizing AI-driven optimization and comprehensive Gmail deliverability insights over cost efficiency.

4. Lemwarm — ESP-Specific Reporting Excellence

Lemwarm differentiates through detailed ESP-specific reporting, telling you exactly how emails perform on Gmail versus Outlook versus Yahoo.

Key Strengths:

• ESP-specific deliverability reporting across major providers

• Smart Cluster feature tailoring content to industry and audience

• Seamless integration with Lemlist cold email platform

• Template warmup capabilities

• Automated engagement simulation

Integrated Pricing:

• Included in Lemlist Email Pro

• Standalone Essential Plan priced at €24/month (annually) per email 

• Smart Plan priced at €40/month (annually) per email 

Lemwarm's Smart Cluster feature tailors email content to your industry and target audience, improving warmup relevance.

The limitation: Lemwarm functions primarily as an add-on to Lemlist, offering less standalone value compared to dedicated warmup platforms.

Best For: Teams already using Lemlist for cold outreach who want integrated warmup functionality with detailed ESP-level insights.

5. Folderly — Enterprise Compliance Focus

Folderly targets large organizations requiring comprehensive deliverability management with enterprise-grade compliance features.

Enterprise Capabilities:

• Comprehensive spam folder prevention

• Advanced compliance and authentication monitoring

• Detailed deliverability auditing

• Multi-domain management

• Enterprise security features

Pricing: $96/mailbox/month when billed annually

Folderly serves organizations where email compliance and security requirements exceed what budget-friendly tools like TrulyInbox offer. The platform provides the rigorous monitoring and documentation enterprises need for regulatory compliance.

Best For: Large organizations with strict compliance requirements and dedicated IT resources for deliverability management.

6. InboxAlly — Agency-Focused Engagement Simulation

InboxAlly caters specifically to marketing agencies, simulating genuine engagement patterns to build sender reputation.

Agency-Centric Features:

• Engagement simulation mimicking real subscriber behavior

• Multi-client management capabilities

• Deliverability monitoring across client accounts

• Agency partnership programs

Pricing Structure:

• Entry: $149 monthly (100 seed emails daily)

• Mid-tier: $645 monthly (500 seed emails daily, 5 sender profiles)

• Enterprise: $1,190 monthly (1,000 seed emails daily, strategic advisory)

InboxAlly's approach focuses on simulating the engagement patterns that email providers use to determine sender quality. By generating opens, clicks, and replies that mirror real subscriber behavior, the platform builds reputation signals that improve inbox placement.

Best For: Marketing agencies managing deliverability across multiple client accounts who need scalable engagement simulation.

7. Warmup Inbox — Entry-Level Simplicity

Warmup Inbox provides basic warmup automation for individuals and small teams entering the email deliverability space.

Basic Features:

• Automated warmup sequences

• Simple setup process

• Affordable entry pricing

• Basic analytics dashboard

Value-Oriented Pricing:

• Starter: $15/month (annually) for single inbox

• Pro: $49/month annually per inbox with advanced features

• Max: $79/month annually per inbox with additional features

• Custom team plans for agencies managing multiple clients

Warmup Inbox serves users who need basic warmup functionality without the complexity of enterprise platforms. The straightforward approach appeals to solopreneurs and small sales teams just beginning cold outreach.

Best For: Individuals and small teams seeking simple, affordable warmup without advanced features.

Selecting the Right TrulyInbox Alternative

Choosing between these alternatives depends on your specific use case, team size, and primary email challenges.

For E-commerce Brands Using Klaviyo

Choose Mailmend when you need:

• Primary inbox placement for promotional emails (not just spam avoidance)

• Immediate revenue impact rather than weeks of warmup

• Native integration with your existing Klaviyo workflows

• Zero changes to email content or templates

• Dedicated partnership support

Traditional warmup tools cannot solve the Promotions tab challenge. If your campaigns consistently land in Gmail's Promotions tab despite good sender reputation, you need Mailmend's algorithmic approach rather than additional warmup.

For Cold Email Outreach Teams

Choose TrulyInbox when you need:

• Budget-friendly multi-account warmup

• Simple B2B cold email sender reputation building

• Basic warmup without complex configuration

Choose Warmforge when you need:

• Enterprise-grade control over DNS and routing

• Reliable scaling beyond 30 accounts with zero drops

• Automated SPF, DKIM, DMARC configuration

Choose Warmy.io when you need:

• AI-driven warmup optimization adapting to mailbox characteristics

• Google Postmaster Tools integration for Gmail insights

• Comprehensive analytics and reporting

Enhancing Email Effectiveness with Workflow Automation

Beyond inbox placement, maximizing email marketing ROI requires integrating deliverability solutions with your broader marketing automation stack.

The Klaviyo Integration Advantage

For e-commerce brands, Klaviyo's 350+ integrations create a unified ecosystem connecting your email marketing with Shopify, WooCommerce, BigCommerce, and other platforms. Mailmend enhances this ecosystem by ensuring campaigns reach the Primary inbox without disrupting existing workflows.

This integration approach means:

• No ESP migration required

• Existing automation sequences remain intact

• A/B testing through Klaviyo's native functionality

• Revenue attribution within familiar analytics dashboards

For brands exploring partnership opportunities, Mailmend's agency program allows email marketing agencies to offer enhanced deliverability to their client base.

Complementary Tool Strategies

E-commerce brands can use traditional warmup tools alongside Mailmend for comprehensive deliverability:

• Initial domain warmup: Use warmup tools for new sending domains

• Ongoing inbox placement: Implement Mailmend for promotional tab optimization

• Continuous monitoring: Leverage both for different aspects of deliverability

The approaches work alongside each other rather than requiring exclusive commitment.

Frequently Asked Questions

What is the main difference between a traditional email warmup tool and Mailmend?

Traditional warmup tools like TrulyInbox, Warmforge, and Warmy.io build sender reputation by gradually increasing sending volume—a process taking 2-6 weeks. They help cold email senders avoid spam folders. Mailmend addresses a fundamentally different challenge: moving e-commerce promotional emails from Gmail's Promotions tab to the Primary inbox through algorithmic technology. This delivers Day 1 results without requiring content changes or weeks of warmup.

Can switching email warmup tools improve my e-commerce email performance?

Switching between traditional warmup tools (TrulyInbox to Warmforge, for example) won't solve Promotions tab placement issues because all warmup tools address sender reputation, not Gmail's promotional categorization algorithms. E-commerce brands experiencing Promotions tab placement need Mailmend's specialized approach, which has delivered up to 82% open rate increases for brands like Dr. Squatch and Caraway Home.

How does Mailmend's setup compare to traditional warmup tools?

Mailmend implements in under 15 minutes through a drag-and-drop code snippet in Klaviyo—no DNS configuration, SMTP settings, or technical infrastructure changes required. Traditional warmup tools typically require 10-60 minutes for initial setup, plus 2-6 weeks before seeing results. Warmforge's advanced DNS setup can take 1+ hour for initial configuration.

What results can I expect from implementing Mailmend?

E-commerce brands using Mailmend report measurable results within 24 hours. Documented outcomes include: Dr. Squatch achieving 112% email revenue increase with 13% increase in open rates and 18% increase in CTR, Ministry of Supply seeing 22% open rate and 41% CTR increases within one business day, and Amberjack recording 34% open rate and 71% CTR increases. For a consultation on expected results for your brand, contact Mailmend directly.