Unlock The Inbox
4.8 From 1 to 5
42 Reviews
Overall Ratings
5 Stars
4 Stars
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  • 42 Reviews
  • 10 / 10 Recommend
  • 9.6 / 10 TrustScore
Nov 09, 2017
Simple, no unnecessary frills (clutter), relatively easy to use. Great tool for email system administrators!
Nov 09, 2017
Very thorough report of email server configuration
Nov 09, 2017
Very easy to perform and assessment has good coverage
Very easy to perform - as simple as sending an email. The assessment was technically detailed and precisely what I was looking for.
Nov 09, 2017
Great details!
The detail on every aspect of modern e-mail configuration was excellent, and having independent verification that my SPF, DKIM and DMARC are configured correctly is invaluable.
Nov 09, 2017
Good tool for DKIM debugging
Perfect debugging tool to find subtle DKIM configuration errors that only affect certain DKIM validators.
Nov 09, 2017
Perfect! great service
Nov 08, 2017
Awesome tool, great job! Very useful and complete testing.
Nov 08, 2017
it does exactly what it claims. a great tool for anyone trying to configure their email system to comply with RFCs and/or best practices.
Nov 08, 2017
I think that your tool has been incredibly helpful in my attempt to make a useful personal mail server that doesn't bounce mails. It is a bit visually confusing at first, especially when using the free version. For example it had listed me for 2 criticals and I couldn't tell what it was refering

Using the full version with the code you sent out for November I was able to set up an abuse@ mailbox, which I would not have known about otherwise.
Nov 08, 2017
Detailed and helpful test report for running your own email service
Unlock The Inbox kindly provides me with a free email test, which gave me very detailed and helpful report on various settings, such as DNS, SMTP, IMAP, SSL, SPF, DKIM, DMARC, etc. The report highlights the critical problems and reminds the possible warnings/issues, which is really helpful.

One missing thing from the report, I think, is the open relay check, but Unlock The Inbox provides such check on a separate URL for free.

Thanks to Unlock The Inbox for their great service.
Nov 08, 2017
Comprehensive email/inbox diagnostic tool...
if you're looking for comprehensive geeky details to help diagnose your email setup, unlock the inbox is a great service/resource to ensure no stone is left unturned.

if your business is dependent on email communication and optimizing authenticity and maximizing email delivery, you'll want this in your back pocket for tools!
Nov 07, 2017
Enabled us to configure our organization's e-mail correctly so that our messages get accepted while helping to fight spam.
Oct 31, 2017
Awesome service for testing email deliverability, easy to use, great tools, reasonable pricing.
Oct 17, 2017
Excellent service and a bargain price
I would have been going around in circles for many more weeks if I had not used this service to pin point what was going wrong.
Oct 04, 2017
Best email testing tool ever, you can see where your email delivery has issues and how to overcome them.
Oct 03, 2017
Great app, and great team behind!
Oct 03, 2017
Unlock the Inbox has been amazing, it has helped me lot in testing and proper configuration of my mail server and customers are really happy.
i was able to diagnose properly based on tools available at Unlock the Inbox.
Sep 28, 2017
Best of the best
Sep 26, 2017
Great set of extremely useful tools for reasonable price
I use UnlockTheInbox for almost a year.

Found it accidentally then was surfing Internet in search of good tool to help with assessing mail server/system proper configuration.

One of most useful, paid functionality of UnlockTheInbox is the so called "Inbox Placement Test", which allow you to check deliverability of particular email sent to around 35 different email providers test email addresses. In the result you can see where you email was landed - Inbox, Spam or not delivered at all.

I highly recommend UnlockTheInbox for those who are dealing with mail systems fine tuning and troubleshooting.
Sep 24, 2017
A great service and a more than fair price.
The premium feature is a great secret weapon. The email test alone is worth the price.
About Unlock The Inbox
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