Puntuado con 5 de 5 estrellas

por MartinCZE el Oct. 17, 2025 ·

Thank you.

Puntuado con 1 de 5 estrellas

por TLS el Oct. 16, 2025 ·

Very nice extension but why does it need full access to my computer ?
OK as Portable App or on test machine but unacceptable on a production computer.
Is this a Security add-on or a backdoor ?

de Philippe Lieser (desarrollador) el Oct. 16, 2025 ·

The reasons why the add-on needs full, unrestricted access to Thunderbird are described in https://github.com/lieser/dkim_verifier/wiki/FAQ#why-does-the-add-on-need-full-unrestricted-access-to-thunderbird.

Also note all versions of such add-ons are reviewed by another person.

It is understandable if you still don't want to grant the add-on such access.
But to imply malicious intend is a little rude.

Puntuado con 5 de 5 estrellas

por Marcos el Sept. 18, 2025 ·

Indispensable extension! I got hooked on checking the authentication of the emails I receive. The translation into my language, Portuguese, is excellent, clearly done with care, not automatic. You can tell the developers are dedicated. Highly recommend!

Esta valoración es de una versión anterior del complemento (6.1.0). 

Puntuado con 5 de 5 estrellas

por Dmytro Kartashov el Sept. 12, 2025 ·

Thank you to the developer for this wonderful and stable application. Very useful.

Esta valoración es de una versión anterior del complemento (6.1.0). 

Puntuado con 5 de 5 estrellas

por Some Random Mozilla User el Sept. 10, 2025 ·

A great, simple and useful extension. If configured with the option to add a background colour to the sender's email address, it's immediately evident at a glance if DKIM is valid or not.

Esta valoración es de una versión anterior del complemento (6.1.0). 

Puntuado con 5 de 5 estrellas

por Babyblue69 el Jul. 30, 2025 ·

Very useful add-on. I hope to see a long-term follow-up. Thank you for your excellent work.

Esta valoración es de una versión anterior del complemento (6.1.0). 

Puntuado con 5 de 5 estrellas

por major-mayer el Abr. 24, 2025 ·

Very useful add on. Make sure that you activate the visual highlighting in the add-on settings.

Esta valoración es de una versión anterior del complemento (6.0.1). 

Puntuado con 5 de 5 estrellas

por Dabonz el Abr. 6, 2025 ·

Excellent Add-On

Esta valoración es de una versión anterior del complemento (6.0.1).  Este usuario tiene una valoración anterior de este complemento.

Puntuado con 5 de 5 estrellas

por Rei.N el Abr. 1, 2025 ·

Excellent!

Esta valoración es de una versión anterior del complemento (6.0.1).  Este usuario tiene una valoración anterior de este complemento.

Puntuado con 5 de 5 estrellas

por Tblue el Mar. 4, 2025 ·

Works well! Allows me to quickly see whether a message passes DKIM validation.

Esta valoración es de una versión anterior del complemento (5.6.0). 

Puntuado con 5 de 5 estrellas

por Jan Klass el Feb. 1, 2025 ·

Great extension

Esta valoración es de una versión anterior del complemento (5.5.0). 

Puntuado con 5 de 5 estrellas

por AtomicRobotMan0101 el Oct. 12, 2024 ·

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.

Esta valoración es de una versión anterior del complemento (5.4.0). 

Puntuado con 1 de 5 estrellas

por Boristhemoggy el Ago. 21, 2024 ·

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.

Esta valoración es de una versión anterior del complemento (5.4.0). 

de Philippe Lieser (desarrollador) el Ago. 21, 2024 ·

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.

Puntuado con 5 de 5 estrellas

por tancrackers el Jul. 26, 2024 ·

Great addon!

Esta valoración es de una versión anterior del complemento (5.4.0).  Este usuario tiene una valoración anterior de este complemento.

Puntuado con 4 de 5 estrellas

por taoky_42 el Mar. 2, 2024 ·

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.

Esta valoración es de una versión anterior del complemento (5.4.0). 

Puntuado con 5 de 5 estrellas

por sha-265 el Nov. 15, 2023 ·

Nice

Esta valoración es de una versión anterior del complemento (5.3.1). 

Puntuado con 2 de 5 estrellas

por s6df4sfd el Nov. 2, 2023 ·

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.

Esta valoración es de una versión anterior del complemento (5.3.1). 

de Philippe Lieser (desarrollador) el Nov. 2, 2023 ·

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).

Puntuado con 5 de 5 estrellas

por Aykut Çevik el Oct. 18, 2023 ·

Works great!

Esta valoración es de una versión anterior del complemento (5.3.1). 

Puntuado con 5 de 5 estrellas

por wildernessfamily el Jul. 5, 2023 ·

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!

Esta valoración es de una versión anterior del complemento (5.3.1). 

Puntuado con 1 de 5 estrellas

por Firefox user d1abf1 el Dic. 11, 2022 ·

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.

Esta valoración es de una versión anterior del complemento (5.1.1). 

de Philippe Lieser (desarrollador) el Dic. 14, 2022 ·

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.