Email Sender Verification for Thunderbird

Phishing emails have become quite common in past years and it has become increasingly important to verify the sender - or origin - of emails that are received.
Experienced users can do that manually by checking email headers for instance, or identify most phishing emails by content. Since those emails share some traits -- they need to get you click on something, call someone or execute a file -- it is usually easy to spot them with some experience.
While that is possible, sophisticated phishing emails are harder to verify as they look like exact copies of legitimate emails that you receive from a company.
Update: The Thunderbird extension is not compatible with recent versions of the email client. It cannot be used anymore, and there is no comparable extension available.
Sender Verification for Thunderbird
The email Sender Verification extension for Mozilla Thunderbird integrates an automatic option that verifies email senders to the Thunderbird email client.
It tells you if the sender that is shown in the from header of the email was the actual sender of the email. The extension uses the Sender Policy Framework and various reputation services like Spamhaus or Sender Score Certified to retrieve information about the domains.
The Sender verification add-on is compatible with Thunderbird 3. It adds a new column to the list of emails in the mail client which needs to be enabled before it is visible. This is done by clicking on the header row icon that allows Thunderbird users to display additional columns with information in the client.
Sender Verify looks up all emails and displays status information such as pass, fail, none or neutral to give the user an indication of the trustworthiness of particular emails.
The add-on displays information in the email's header as well which gives further information that can be helpful to identify the email sender.
The Sender Verification extension is still in development but works fine as it is.
The developer plans to add preferences, verification of hotmail accounts and other features to the extension in the future. The extension can be downloaded from the Mozilla website.






You said that Outlook isn’t your main email client, so which is your main one?
I think its thunderbird
It is Mozilla Thunderbird.
Awesome! This actually solved my problem… what a stupid bug.
If this is the same bug that I’ve encountered, there may be another fix: (1) hover over open Outlook item in Taskbar, cursor up to hover over Outlook window item, and right-click; (2) this should give you Restore / Move / Size / Minimize / Maximize — choose Move or Size; (3) use your cursor keys, going arbitrarily N/S/E/W, to try to move or size the Outlook window back into view. Basically, the app behaves as though it were open in a 0x0 window, or at a location that’s offscreen, and this will frequently work to resize and/or move the window. Don’t forget to close while resized/moved, so that Outlook remembers the size/position for next time.
THANK YOU Claude!!! I could get the main window to launch but could not get any other message window to show on the desktop. You are my hero!!!!
Solved my issue! 6 years later and this is still problem…
Fantastic. Thank you. Size did the trick.
This solved my Outlook problem, too. Thank you. :)
Thank you so much, this started happening to me today and was causing big problems. You are a life saver, I hope I can help you in some way some day.
You are a god – thank you!
thanks a lot…. work like charm.. :-)
Yah…thanks Claude. I’ve been having the same problem and tried all the suggestions…your solution was the answer. It had resized itself to a 0/0 box. Cheers
Excellent post. This had me baffled even trying to accurately describe the problem. This fixed it for me.
Thank you
Thanks a lot for the article. Don’t know why it happenend, don’t know how it got fixed, but it was really annoying and now it works :-)
Thanks a lot. I was facing this issue from past 3 week. I tried everything but no resolution. The issue was happening intermittently and mainly when I was changing the display of screen ( as i use 2 monitors). The only option i had was to do system restore. But thanks to you.
I’ve been tried to sole this problem for 12hours. Your comment about changing the display of screen helped me a lot!! Thanks!!
Thank you…don’t know why this happened but your instructions helped me fix it. Running Windows 10 and office pro 2007
Great tip! Thanks!
Worked for me, too – thank you!!!
It’s Worked for me, too
thank you very much!
I had a similar issue with Outlook 2013 on Windows 10 and this helped me to fix it. Thank you very much!
Thank you so much. Solved!
Considering you published this in 2012, incredible not been debugged by Microsoft.
Thank you again. M
This problem was faced by only one user logging to TS 2008 r2 using outlook 2010.The issue was resolved.
Thanks.
Great tip. Thank you!!!! If it helps, I had to use the Control Key and the arrow keys at the same time to bring my window back into view. Worked like a charm.
Thank you, this worked !!!!
Man, you are a fucking god. Thanks a lot, what an annoying bug!!
Awesome, this post solved the issue. Many thanks!