GlockApps

09/24/2026

These things in our latest Inbox Insights newsletter are worth your time:
🔹 AI in GlockApps: two new ways to work with deliverability data, including Send to AI and the new MCP Server
🔹 Accurate testing: the main things to look for when evaluating a deliverability tool
🔹 Yahoo Mail research: how different users manage their inboxes

Read the latest issue 👇

Inbox placement, reputation, authentication, spam scores — email deliverability involves a lot of moving parts, and when something goes wrong, the hardest part is usually knowing where to start fixing. The right data can guide you on where to focus your attention and what to look into next.

09/14/2026

Our September Inbox Insights issue is here 👇
• Why You Should Test Your Email Deliverability: What regular testing can help you catch.
• Spam Test Top-Up Packs: Need more tests than your plan includes? Add extra credits without changing your subscription.
• Google Workspace Email Setup Status: A quick new check for MX, SPF, and DKIM records.
Plus a few more useful reads from the GlockApps blog.

Take a look 👇

Email deliverability can change even when you haven’t changed your email strategy. That’s why regular testing, monitoring, and keeping your email setup in good shape matter.

09/03/2026

New Feature: Klaviyo & HubSpot integrations in GlockApps 💥
Want to test a campaign without leaving your deliverability tool?

You can now connect your account to GlockApps in just a few clicks:
1️⃣ Connect your Klaviyo or HubSpot account
2️⃣ Select the campaign you want to test
3️⃣ Run the test directly from the application

You can also set up Automatic tests to monitor selected campaigns on a schedule without repeating the setup.

❎ No manual seed-list uploads or extra audience setup
✅ Your original campaigns stay unchanged

Connect and start testing 👉 https://app.glockapps.com/inbox-insight/connected-mailboxes/add

08/26/2026

🙌 We’re thrilled to share some updates that make GlockApps way easier to use for your everyday email tasks. Now you can expect more flexibility for testing deliverability and better protection for your email infrastructure.

Here are three things to check out👇
1️⃣ Google Postmaster Tools V2 Integration
GlockApps now supports Google Postmaster Tools V2, giving you access to new metrics and more detailed email performance information.

The V2 view includes:
• Compliance Dashboard
• Deliverability Analysis

Important: Google has officially announced that the legacy Google Postmaster Tools V1 interface is being deprecated and that users are being redirected to the new V2 experience. As of August 25, 2026, the legacy interface is no longer available.

Connect your Postmaster Tools V2 account to start seeing the new V2 data in GlockApps 👉 https://app.glockapps.com/integrations/postmaster/v2/domains/p/1

2️⃣Unlimited Connected Mailboxes
Managing multiple sending domains in GlockApps just got easier. You can now connect unlimited mailboxes to your account.
Connected Mailboxes, formerly called Sending Accounts, let you test emails across all your senders:
• Multiple brands and outreach domains
• Client accounts and agency projects
• Different teams and sending tools

Connect your mailboxes and manage them all in one place 👉 https://app.glockapps.com/inbox-insight/connected-mailboxes/page/1

💡For API users: With Sending Accounts now replaced by Connected Mailboxes and the previous limits removed, please check your integration’s error handlers to make sure they’re ready for the update.

3️⃣ New Free Email Security Checker
There’s also a new free tool in GlockApps: Email Security Checker. Instead of checking different parts of your email setup separately, you can now run one scan to get a broader picture of your domain’s email security.
The checker analyzes six key areas:
• Authentication: SPF, DKIM, DMARC
• Transport: MTA-STS, TLS-RPT
• Delivery: MX, DNS, rDNS
• Reputation: IP and domain blocklists
• Identity: BIMI, VMC
• Hygiene: TXT records, deprecated tags, content

You’ll get an Email Security Score and Spoofability Level, plus a clear breakdown of issues that may affect your domain protection.

You can also request a full PDF report with all detected issues, fix instructions, raw DNS records, and a personal link to share your results with your team.

Check Your Domain 👉 https://glockapps.com/email-security-checker/

08/18/2026

“How much does email marketing cost?” There’s no single answer. And looking only at the price of your email platform can give you a pretty misleading picture.

For many businesses, email marketing costs vary significantly depending on their needs and the complexity of their email program. According to WebFX research involving U.S. marketers, $51–$1,000 per month is a common overall range.

So before setting a budget, look at what you’re actually paying for:
#1 Your audience size
Many platforms charge based on the number of contacts. Keeping thousands of inactive subscribers can increase your bill without adding much value.

#2 Sending volume
10,000 subscribers receiving one newsletter a month is very different from 10,000 subscribers receiving newsletters, promotions, welcome sequences, and behavioral emails.

#3 Campaign complexity
Basic newsletters are relatively simple to run. Customer journeys, dynamic content, A/B testing, CRM integrations, and advanced automation require more tools and more time.

#4 People and production
Someone still has to write, design, build, test, segment, and analyze your campaigns. Whether that’s your team, a freelancer, or an agency, it belongs in the budget.

#5 Deliverability
Paying to send 100,000 emails doesn't help much if a large share ends up in spam. Inbox placement testing, reputation monitoring, and authentication checks may be a relatively small part of your budget, but they can help protect the rest of your investment.

Tools like GlockApps can help identify inbox placement issues before they affect important campaigns. You can run 2 free tests to see where your emails are landing before deciding if you need more.

Rather than looking for the cheapest possible option, look at the cost-to-return ratio.

👌 Ultimately, the best email marketing budget is the one that gives your business the functionality it needs without unnecessary expenses on tools or resources.

08/14/2026

How did email deliverability change in the first half of 2026?
We analyzed average Inbox placement rates across five major free providers: AOL, Gmail, Hotmail, Outlook, and Yahoo, and three monthly sending-volume tiers.

All five major free providers recorded higher average Inbox placement rates than in H1 2025. Gmail showed the largest overall improvement, with Inbox rates increasing by nearly 9% for mailboxes aged 4+ years and 7% for mailboxes aged 6+ months.

Sending volume also made a difference:
• 1-10K emails/month: average Inbox placement increased by nearly 5%. AOL and Yahoo saw the largest gains, at 15% and 17%, respectively. Gmail, however, declined by 7% for 6+ month mailboxes and by 3% for 4+ year mailboxes.
• 10-50K emails/month: average Inbox placement decreased by 2,4%. Gmail was the exception, improving by 7-10%, while AOL and Yahoo both declined by around 13%.
• 50-200K emails/month: average Inbox placement increased by 4%. Hotmail and Outlook recorded the strongest gains, both at around 9%.

So, while the overall deliverability benchmark has increased, the results look quite different when you break them down by individual providers and sending volumes.

📊 But there’s more in the full report:
The PDF version expands the analysis to 17 ESPs, 11 Inbox providers, and 5 sending-volume tiers, including business mailbox providers such as Office 365, Google Workspace, Amazon WorkMail, and Zoho, as well as ESP-level benchmarks and data for senders sending 200K–1M and 1M+ emails per month.

Check out the detailed statistics to see how your sending profile compares with the latest benchmarks 👇
https://glockapps.com/education/email-deliverability-benchmark-report-2026-vs-2025/

08/04/2026

Most deliverability discussions focus on authentication, content, or sender reputation.
But mailbox providers also learn your sending patterns: frequency, volume, timing, audience selection, and consistency.
They evaluate these signals alongside authentication, engagement, complaint rates, and sender reputation to decide where future messages should be placed.

A few examples:
✓ Consistent weekly campaigns help build a predictable sending history.
⚠️ A sudden jump from 20,000 emails to 300,000 can trigger additional filtering because the behavior is unusual.
⚠️ Sending to inactive subscribers month after month weakens engagement signals and can hurt future inbox placement.

That's why healthy sending patterns usually include:
• Gradual volume increases for new domains or IPs
• More frequent emails to engaged subscribers
• Lower frequency (or suppression) for inactive contacts
• Splitting large campaigns into batches instead of sending everything at once

One more important point: volume alone doesn't determine deliverability. A high volume sender with strong engagement often outperforms a smaller sender with inconsistent campaigns and poor list hygiene.

The easiest way to spot problems is to monitor inbox placement by mailbox provider. GlockApps helps you test where your emails actually land, so you can quickly identify provider-specific issues before they affect campaign performance.

07/30/2026

GlockApps API Now Available on All Plans (Even Free)
💥 Great news! The GlockApps API is now available to all users, regardless of their subscription plan.
Whether you're building custom integrations, automating deliverability workflows, or using AI, you now have full API access from day one, with your first 2 free spam tests 👉 https://app.glockapps.com/signup?utm_source=facebook&utm_medium=social&utm_campaign=openapi2026

That means you can:
· Trigger spam tests and pull results programmatically, no manual exports
· Create, update, and manage projects and tests via the API
· Connect an AI assistant like ChatGPT, Gemini, or Claude to the API and ask it to run spam tests, analyze deliverability data, identify issues, and recommend improvements

You don't need development experience to use it. If you can describe what you want, an AI assistant will handle the request for you.

➡️ Getting started is easy: log in to your GlockApps account, copy the API key from your Account Settings, and explore the documentation to build your first integration or AI-powered workflow.
Explore the API 👉 https://glockapps.com/api-documentation-v2/?utm_source=facebook&utm_medium=social&utm_campaign=openapi2026

07/21/2026

How Many Links Are Too Many for Your Email?
There isn't a fixed number. But if your email contains links in nearly every paragraph, it's worth reviewing.

A high number of links can make the message look overly promotional, raise suspicion, and increase the likelihood that it ends up in the Promotions tab or even Spam.
Also, it makes it harder for recipients to identify the action you actually want them to take. So why risk losing a potential customer?

Before sending, check:
• Are all links necessary, or do several point to similar destinations?
• Is there one primary call to action, or are multiple CTAs competing for attention?
• Do all links work correctly and lead where they should?

GlockApps Spam Test helps answer those questions before your campaign goes live.

The built-in Link Checker in the Content Analysis:
✅ Lists every URL found in the email (header, HTML, and plain text).
✅ Verifies that each link is valid and points to the correct destination.
✅ Highlights duplicate links and images, helping you spot inconsistent anchors or alt text.
✅ Flags link overload as an Action Step when your email contains an excessive number of links.

Simplifying the email and keeping only the most important links makes the message easier for recipients to act on and reduces unnecessary promotional signals.

Before launching your next campaign, run a deliverability test to review your content, validate every URL, and catch potential issues.

💡 Remember: Every link should have a purpose. If removing a link doesn't change the email's outcome, it probably doesn't need to be there.

How many links do you think are appropriate for one email?

07/07/2026

Your email was delivered. But did it reach the inbox?
Inbox placement depends on much more than hitting Send. Authentication, reputation, engagement, and sending behavior all influence where mailbox providers place your messages.
If you're trying to improve deliverability, start by identifying the problem:
📥 Emails land in spam instead of the inbox
→ Test inbox placement and identify provider-specific issues.
Tool: GlockApps

🔐 Authentication issues or domain spoofing concerns
→ Check SPF, DKIM, and DMARC alignment, monitor reports, spot unauthorized senders, and protect your domain.
Tool: DMARKOFF

📊 Low engagement affecting sender reputation
→ Review campaign metrics, clean inactive subscribers, and improve list quality.
Tools: MailerLite

📧 Cold outreach performance is declining
→ Monitor bounces, replies, and sending consistency.
Tool: GMass

📈 Need to understand how Gmail sees your domain
→ Monitor domain reputation, spam rate, authentication status, and compliance.
Tools: Google Postmaster Tools or GlockApps Postmaster Integration

The strongest deliverability strategy combines several types of monitoring:
✔️ Inbox placement
✔️ Authentication
✔️ Sender reputation
✔️ Subscriber engagement
✔️ Mailbox-provider insights

Track these signals together to catch problems before they turn into lost revenue and opportunities.