Add-ons
To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!
CloseWelcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.
CloseReviews for DKIM Verifier
49 reviews for this add-on
Rated 5 out of 5 stars
This is a very nice and useful add-on.
Rated 5 out of 5 stars
A stellar plugin that does real damage to spam.
DKIM is a huge bonus to the emailing community and works perfectly for servers and admins, but the public doesn't know about it. This allows spammer to win.
DKIM Verifier nukes these spamming scum by showing you very clearly if the account is correct, exists and authorised.
The colour combinations are awesome.
This plugin is definitely one that should be incorporated into Thunderbird by default, its that good.
Recommendation - Use it.
Rated 1 out of 5 stars
I just received an email from ebay, to a gmail account that I don't use for ebay. I sent the email to ebay who verified that it did not come from them. However, DKIM says it is a valid and genuine email from ebay.
Not sure if DKIM has any other use than the simple one I'm using it for, but for me it's a massive fail.
Could you please send the e-mail as a saved eml file to me via e-mail (lieser+dkim@posteo.net)?
I would be very interested to better understand what is going on, instead of guessing and explanation.
Rated 4 out of 5 stars
This is great as it could help verify DKIM signs. However, it does NOT like a good idea to solely use this extension to tell if the email is forged or not:
Today I just received an phishing mail and I configured mails to be forwarded by mailgun to my gmail. DKIM verifier says that it is signed by my domain with a yellow warning. If you enable "Read Authentication-Results header" in options it just shows valid (with my domain) and spf pass without any warnings. However, the correct mail auth info before forwarding is inside the ARC headers, and DKIM Verifier does not read this.
Rated 5 out of 5 stars
Nice
This review is for a previous version of the add-on (5.3.1).Rated 2 out of 5 stars
All emails are apparently invalid and have been modified. Even those that come from known and trusted security focused services.
EDIT: Reading your Wiki link indicates that your extension doesn't work with one of a largest email providers - Microsoft.
It looks like a well known issue to you and yet there is no mention of it on the extension's Add-Ons page. I think it would it be appropriate to add it.
I'm not reporting a problem, I'm reviewing the extension. As it stands, it doesn't work and this review is a signal to others that there are issues with it.
This is probably a problem of your e-mail provider, who modifies incoming e-mails. See https://github.com/lieser/dkim_verifier/wiki/FAQ#all-or-almost-all-e-mails-with-dkim-signature-are-failing-with-the-same-error for more information.
Next time please don't use the reviews to report problems. Use https://github.com/lieser/dkim_verifier/issues or write me an E-Mail (in English or German).
Rated 5 out of 5 stars
Works great!
This review is for a previous version of the add-on (5.3.1).Rated 5 out of 5 stars
I wish I found this plugin sooner! Someone wrote it's awfully slow. From the time of this review, I have had my own Mail-In-A-Box Server on AWS for almost the past decade. I use IMAP with Thunderbird. The DKIM check is almost instantaneous!
To the developer; Thank you for your hard work and time you placed into this plugin! Great work!
Rated 1 out of 5 stars
Sorry 2 say, but it is horrible slow. Using dovecot on OpenBSD to manage my EMails (imap) I have to wait several sends for every click in Thunderbird.
This review is for a previous version of the add-on (5.1.1).To improve the speed I would suggest to try the following:
- Enable reading of the Authentication-Results header
- Enabling caching of the DKIM keys
If that does not help please open an issue (https://github.com/lieser/dkim_verifier/issues) so the cause can be investigated further.
Rated 5 out of 5 stars
Very useful extension, thanks!
This review is for a previous version of the add-on (5.1.1).Rated 5 out of 5 stars
Excellent! I wish it would also check the SPF and DMARC parameters. Any chances the author would add this with an upcoming update?
Thanks so much for your contribution!
The add-on does not do any SPF or DMARC checks, but can read the result from the Authentication-Results header, see https://github.com/lieser/dkim_verifier/wiki/Options#read-authentication-results-header.
In the feature please use the issue tracker and discussions on GitHub for feature request and usage questions.
Rated 5 out of 5 stars
Excellent add-on. Performs as advertised, starts working at once, and quite fascinating to review one's mail and see who has got their DKIM/DMARC config wrong. Including me, in the first instance.
Cheeky suggestion: If Philippe Lieser is looking for something to do in his copious free time, may I suggest he consider adding BIMI logo display to the add-on? At the moment I believe it displays logos of well-known senders from its own private collection of icons. To load the correct logo dynamically would be even cooler.
Regarding BIMI and the potential problems and benefit of using it see https://github.com/lieser/dkim_verifier/issues/242#issuecomment-788283783.
For now you unfortunately have to create an issue/PR or write an email to add an icon missing in the internal list.
Rated 5 out of 5 stars
Very useful addon with a lot of configuration options. Must have for checking email legitimity, or monitor email deliverability. 10/10
This review is for a previous version of the add-on (4.1.1).Rated 5 out of 5 stars
After last update, the add-on works excellent.
This review is for a previous version of the add-on (4.1.0).Rated 5 out of 5 stars
Very useful.
This review is for a previous version of the add-on (4.0.0).This sounds like a known problem. You can get a fixed version from https://github.com/lieser/dkim_verifier/issues/279#issuecomment-997386893.
Next time please don't use the reviews to report problems. Use https://github.com/lieser/dkim_verifier/issues or write me an E-Mail (in English or German).
See also https://addons.thunderbird.net/en-US/review_guide
Rated 5 out of 5 stars
EU/DE
Absolut nützliche Erweiterung zum Schutz vor Junk-/Spam-/Fisching-Mails und anderem Gesocks und Hacks! Vielen Dank an den/die Entwickler! Ausgezeichnete Arbeit!
Weiterempfehlung 100 %!
EN/Brexitania
Absolutely useful extension to protect against junk/spam/fishing mails and other junk and hacks! Many thanks to the developer(s)! Excellent work!
Recommendation 100%!
Rated 5 out of 5 stars
Very useful. Thanks
This review is for a previous version of the add-on (4.0.0).Rated 5 out of 5 stars
Greetings,
I have a custom Domail wit Protonmail and have DKIM has and addon in Thunderbird I sent a ticket to let them know every time I get and to my protonmail or my Domain MY DKIM addon says invalid (email was modified)
and these are legit source like my bank and others but my Gmail Accounts and Yahoo tthat I have added to Thunderbird client they say Valid Signed by reelgood.com only says invalid email modified going into inbox from protonmail and my custom email domain
Rated 5 out of 5 stars
Default settings is a bit off from what you want.
A ton of senders have no DKIM signature. I wanted this addon as fast indicator and it does the job.
To create your own collections, you must have a Mozilla Add-ons account.
