Dev tools · alternatives · 2026
24 alternatives to GlockApps
Test where your email will appear: Inbox or Spam
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. GlockApps launched in 2015; newer entries below may have overtaken it.
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Warmup Inbox▲204Free email spam checker & inbox placement tester
2023 · warmupinbox.com · its alternatives →
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Preview, analyze & test emails with one click
2022 · inboxpirates.com · its alternatives →
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See where your and your competition's emails are landing.
2018 · gmass.co · its alternatives →
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Mailnest▲100Sandbox Email testing tool for IT product, service companies
2020 · mailnest.io · its alternatives →
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Vetter▲134Test if your emails will be spammed, using real accounts.
2020 · vetter.monsoonyeti.com · its alternatives →
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Mailtrack.io▲282The best email tracking solution I've found. Free
2014 · mailsuite.com · its alternatives →
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TestSubject▲133Test how your email subject line displays on mobile devices.
2016 · zurb.com · its alternatives →
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lockrMail▲195Own the power to organize and protect your email inbox
2021 · app.lockrmail.com · its alternatives →
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Inbox When Ready▲116Protect your focus... hide your Gmail inbox by default
2016 · chromewebstore.google.com · its alternatives →
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Track email opens, know which emails are opened by recipient
2021 · its alternatives →
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Emails Landing in Spam? 1-click to know what went wrong.
2020 · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →