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GlockApps Alternatives: Find Better Email Deliverability Tools in 2025
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Looking for a GlockApps alternative that actually helps your emails reach the inbox? You’re not alone.
While GlockApps has been around for years as an email deliverability testing tool, many sales teams and marketers are discovering it falls short of modern outreach needs. The platform’s limited testing scope, aggressive pricing tactics, and lack of proactive features have pushed professionals to seek better solutions.
17% of all cold emails never reach the primary inbox due to deliverability issues. With Google and Yahoo’s new 2024 requirements mandating proper authentication and complaint rates below 0.3%, choosing the right deliverability tool isn’t just helpful—it’s essential for business survival.
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TLDR: Top GlockApps Alternatives and Competitors in 2025
Here’s a quick overview of the best GlockApps alternatives:
🏆 Salesso – Complete cold email solution with unlimited warm-up, advanced deliverability testing, and outreach automation ⚡ Saleshandy – Scalable outreach platform with integrated deliverability tools 📈 Instantly.ai – High-volume sending powerhouse with unlimited account connections
🎯 MailReach – Specialized B2B deliverability and warm-up expert 🤖 Folderly – AI-powered deliverability repair and optimization
Best GlockApps Alternatives in 2025
Salesso – Your Complete Cold Email Solution
Why Salesso leads the pack: Unlike GlockApps’ diagnostic-only approach, Salesso handles your entire cold email workflow from prospecting to delivery.
Key Features:
- Unlimited email warm-up across all connected accounts
- Advanced deliverability testing with deep B2B inbox focus
- Email finder and verification for accurate prospect data
- Automated outreach sequences with AI-powered personalization
- Real-time deliverability monitoring and reputation protection
Pricing: Plans start at competitive rates with transparent pricing (no sudden 400-500% increases like reported with GlockApps)
Perfect for: Sales teams and marketers who want an all-in-one solution that eliminates the need for multiple tools and subscriptions.
Saleshandy – The Scalable Outreach Engine
Saleshandy transforms the traditional deliverability testing approach by combining it with actual sending capabilities.
Standout Features:
- Unlimited email account connections and warm-up
- Inbox Radar for comprehensive deliverability testing
- AI-powered sequence writer for automated follow-ups
- Sender rotation to distribute volume across accounts
Pricing: Outreach Starter at ~$36/month, Outreach Pro at ~$99/month
Best for: Agencies and growing sales teams who need scalable, predictable pricing without per-inbox limitations.
Instantly.ai – High-Volume Powerhouse
Instantly.ai has gained massive traction in the outreach community for its unlimited approach to scaling.
Core Strengths:
- Unlimited email accounts and warm-up on all plans
- Robust campaign builder with advanced sequencing
- Separate B2B database and lightweight CRM available
- High-volume sending infrastructure
Pricing: Growth plan at $37/month, Hypergrowth at $97/month
Ideal for: Lead generation agencies and teams focused on high-volume outreach campaigns.
MailReach – B2B Deliverability Specialist
MailReach directly addresses GlockApps’ biggest weakness: shallow B2B testing.
Key Advantages:
- Deep Google Workspace and Office 365 testing (not just 1-2 accounts like GlockApps)
- AI-powered warm-up engine with intelligent engagement patterns
- Customizable inbox targeting for professional email environments
- Detailed reputation monitoring including blacklist and DNS checks
Pricing: ~$25/month per mailbox
Perfect for: B2B teams who demand the highest accuracy in inbox placement testing and need dedicated warm-up capabilities.
Folderly – AI-Powered Deliverability Repair
Folderly takes a revolutionary approach by actively fixing deliverability problems, not just identifying them.
Advanced Features:
- AI-powered problem diagnosis with automated solutions
- Real-time monitoring and alerts for spam placement
- DNS optimization with automatic implementation
- EmailGen AI for deliverability-optimized content creation
Pricing: Core service ~$120/month, Insights tool available separately
Best for: Teams with chronic deliverability issues who need advanced AI-driven repair and optimization.
Proactively Find and Fix Deliverability Issues Before They Affect Your Outreach
Modern email deliverability isn’t about reacting to problems—it’s about preventing them. Here’s how the best alternatives approach this challenge:
The Email Warm-Up Revolution
Email warm-up is non-negotiable for any serious outreach campaign. New or dormant email accounts that suddenly send hundreds of messages daily trigger spam filters immediately.
Modern warm-up tools solve this by:
- Gradually increasing send volume over 2-4 weeks
- Generating positive engagement signals (opens, replies, marking as important)
- Connecting to networks of thousands of high-reputation inboxes
- Automatically pulling emails out of spam folders
Critical insight: GlockApps offers zero warm-up functionality, forcing users into disjointed workflows with separate subscriptions.
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Authentication: Your Digital Passport
Before any deliverability testing makes sense, your technical foundation must be solid:
SPF (Sender Policy Framework): Your domain’s “authorized sender list” – specifies which servers can send on your behalf.
DKIM (DomainKeys Identified Mail): The “tamper-proof seal” – adds encrypted signatures to verify email integrity.
DMARC (Domain-based Message Authentication): The “security policy” that tells receiving servers what to do with emails failing SPF/DKIM checks.
The B2B Testing Gap
For business development and sales teams, 61% of prospects use either Google Workspace or Microsoft Office 365. GlockApps’ testing includes only 1-2 seed accounts for these crucial providers—statistically unreliable for real-world B2B campaigns.
The best alternatives focus their testing on deep, relevant B2B inbox networks, providing actionable data for professional outreach.
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Complete targeting, campaign design, and scaling—no deliverability testing tools needed
Why Teams Are Moving Away From GlockApps
The Trust Problem
Multiple users report sudden price increases of 400-500% just one month after signup. Even more concerning are reports of invasive privacy requirements—users being asked for bank statements and photo IDs just to upgrade paid plans.
Professional insight: A deliverability tool should build trust, not erode it. These practices create the exact opposite relationship successful outreach teams need.
The Action Gap
GlockApps remains firmly in the “diagnose and report” category while modern teams need “prevent and optimize” solutions. The platform can tell you an email landed in spam but offers little to prevent future occurrences or build the reputation needed to stay in the inbox.
The Integration Challenge
With no native sending capabilities or warm-up features, GlockApps positions itself as a supplementary tool rather than a central component. Modern sales teams prefer integrated platforms that eliminate tool-switching and subscription juggling.
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Strategic Implementation: Your 2025 Action Plan
Technical Foundation Checklist
✅ Verify SPF, DKIM, and DMARC records using MXToolbox or similar tools ✅ Start with DMARC p=none policy to monitor without affecting delivery
✅ Warm up every new domain for 2-4 weeks minimum before campaigns ✅ Never buy email lists – purchased lists destroy sender reputation ✅ Clean lists every 6 months – remove hard bounces and unengaged contacts
Content Optimization Framework
Personalization depth matters: Reference recent company announcements, LinkedIn posts, or industry-specific pain points beyond basic name merge tags.
Keep it concise: Ideal cold email length is 50-150 words with short, scannable sentences.
Limit spam triggers:
- Maximum 1-2 links in initial emails
- Avoid ALL CAPS and excessive exclamation points
- Use plain text or simple HTML over heavy design
- Include single, clear calls-to-action focused on generating replies
Measuring Success
Track metrics that matter:
- Inbox placement rate (not just delivery rate)
- Reply rates as engagement signals
- Domain reputation scores over time
- Spam complaint rates (must stay below 0.3%)
FAQs
Q: What's the biggest difference between GlockApps and its alternatives?
Q: Do I need email warm-up if I'm just testing deliverability?
Q: Which alternative is best for B2B outreach?
Q: How much should I expect to spend on deliverability tools?
Q: Can I use these tools with my existing email platform?
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