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Privacidade por padrão."],"People before profits":["Pessoas acima do lucro"],"Security through transparency":["Segurança por meio da transparência"],"The best Proton Mail ${ BLACK_FRIDAY } deals":["As melhores ofertas de ${ BLACK_FRIDAY } do Proton Mail"],"The world’s only community- supported email service":["O único serviço de e-mail do mundo apoiado pela comunidade"]},"specialoffer:limited":{"${ hours } hour":["${ hours } hora","${ hours } horas"],"${ hoursLeft }, ${ minutesLeft } and ${ secondsLeft } left":["${ hoursLeft }, ${ minutesLeft }, e ${ secondsLeft } restantes"],"${ minutes } minute":["${ minutes } minuto","${ minutes } minutos"],"${ seconds } second":["${ seconds } segundo","${ seconds } segundos"],"Limited time offer":["Oferta por tempo limitado"]},"specialoffer:listitem":{"Create multiple addresses":["Crie vários endereços"],"Hide-my-email aliases":["Use aliases do hide-my-email"],"Quickly unsubscribe from newsletters":["Cancele a assinatura de newsletters rapidamente"],"Use your own domain name":["Use seu próprio nome de domínio"]},"specialoffer:logos":{"As featured in":["Destaques"]},"specialoffer:metadescription":{"Get an encrypted email that protects your privacy":["Obtenha um e-mail criptografado que proteja sua privacidade"]},"specialoffer:metatitle":{"Proton Mail Black Friday Sale - Up to 40% off":["Oferta de Black Friday do Proton Mail - Até 40% de desconto"]},"specialoffer:newmetadescription":{"Get up to 40% off Proton Mail subscriptions this Black Friday. Find great deals on our secure end-to-end encrypted email plans.":["Obtenha até 40% de desconto nas assinaturas do Proton Mail nesta Black Friday. Confira ótimas ofertas em nossos planos de e-mail seguro com criptografia de ponta a ponta."]},"specialoffer:newmetatitle":{"Proton Mail Black Friday sale | Up to 40% off secure email":["Oferta de Black Friday do Proton Mail - Até 40% de desconto no e-mail protegido"]},"specialoffer:note":{"* Billed at ${ TOTAL_SUM } for the first year":["* Com o preço de ${ TOTAL_SUM } no primeiro ano"],"*Billed at ${ TOTAL_SUM } for the first 2 years":["*Com o preço de ${ TOTAL_SUM } nos primeiros dois anos"],"30-day money-back guarantee":["Garantia de reembolso de 30 dias"],"Billed at ${ TOTAL_SUM } for the first 2 years":["Com o preço de ${ TOTAL_SUM } nos primeiros dois anos"],"Billed at ${ TOTAL_SUM } for the first year":["Com o preço de ${ TOTAL_SUM } no primeiro ano"],"You save ${ SAVE_SUM }":["Economize ${ SAVE_SUM }"]},"specialoffer:off":{"${ PERCENT_OFF } off":["-${ PERCENT_OFF }"]},"specialoffer:testimonial":{"I love my ProtonMail":["Adoro ProtonMail"],"My favorite email service":["Meu serviço favorito de e-mail"],"Thanks Proton for keeping us all safe in the complicated internet universe.":["Agradecemos ao Proton por nos manter a salvo no complicado universo da internet."],"You get what you pay for. In the case of big tech, if you pay nothing, you get used. I quit using Gmail and switched to @ProtonMail":["Você recebe pelo que paga. No caso das grandes tecnologias, você se acostuma quando não paga nada. Parei de usar o Gmail e troquei para o @ProtonMail"]},"specialoffer:time":{"Days":["Dias"],"Hours":["Horas"],"Min":["Min"]},"specialoffer:title":{"And much more":["E muito mais"],"Safe from trackers":["A salvo de rastreadores"],"Stay organized":["Mantenha tudo organizado"],"Black Friday email deals":["Ofertas de e-mail da Black Friday"],"Don’t just take our word for it":["Não confie apenas em nossa palavra"],"Make your inbox yours":["Deixe sua caixa de entrada do seu jeito"],"Our story":["Nossa história"],"Transfer your data from Google in one click":["Transfira seus dados do Google com um clique"]},"specialoffer:tooltip":{"Access blocked content and browse privately. Includes ${ TOTAL_VPN_SERVERS }+ servers in ${ TOTAL_VPN_COUNTRIES }+ countries, connect up to 10 devices, access worldwide streaming services, malware and ad-blocker, and more.":["Acesse conteúdo bloqueado e navegue com privacidade. Inclui mais de ${ TOTAL_VPN_SERVERS } servidores em mais de ${ TOTAL_VPN_COUNTRIES } países, conexão com até 10 dispositivos, acesso a serviços de streaming do mundo todo, um bloqueador de anúncios e malware e muito mais."],"Easily share your calendar with your family, friends or colleagues, and view external calendars.":["Compartilhe facilmente seus calendários com amigos, familiares ou colegas e visualize calendários externos."],"Includes support for 1 custom email domain, 10 email addresses, 10 hide-my-email aliases, calendar sharing, and more.":["Inclui suporte para 1 domínio de e-mail personalizado, 10 endereços de e-mail, 10 aliases do hide-my-email, compartilhamento de calendário e muito mais."],"Includes support for 3 custom email domains, 15 email addresses, unlimited hide-my-email aliases, calendar sharing, and more.":["Inclui suporte para 3 domínios de e-mail personalizados, 15 endereços de e-mail, aliases ilimitados do hide-my-email, compartilhamento de calendário e muito 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min":["${ readingTime } min","${ readingTime } min"],"Category":["Categoria","Categorias"],"Didn’t find what you were looking for?":["Não encontrou o que procura?"],"General contact":["Contato geral"],"Get help":["Obter ajuda"],"Legal contact":["Contato jurídico"],"Media contact":["Contato de mídia"],"Partnerships contact":["Contato de parcerias"],"Reading":["Leitura"]},"Support Form Platform option":{"VPN for Android TV":["VPN para Android TV"],"VPN for Apple TV":["VPN para Apple TV"],"VPN for Chromebook":["VPN para Chromebook"]},"Support troubleshooting":{"App version":["Versão do aplicativo"],"Browser":["Navegador"],"Check if this helps":["Confira se isso ajuda"],"Choose a product":["Selecione um produto"],"Did this solve your issue?":["Isso resolveu seu problema?"],"Faster assistance is just a few clicks away":["Assistência mais rápida a apenas alguns cliques de distância"],"How can we help?":["Como podemos ajudar?"],"No, contact support":["Não, entrar em contato com o 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Key Transparency for email is a new advanced security feature for Proton Mail that is based on blockchain technology.
To keep your information safe, Proton Mail applies end-to-end encryption (E2EE) automatically whenever you email contacts who also use Proton Mail.
This encryption relies on public key cryptography, which consists of key pairs: a private key and a public key. When you send an email to someone who also uses Proton Mail, the app on your device will automatically encrypt it using their public key, which the app retrieves from Proton’s servers. That person’s Proton Mail app then decrypts your email on their device using their private key.
Depending on your threat model, you might want to make sure you’re emailing the person you intend to by verifying their public key.
While you may have already used our address verification feature to check public keys, we’ve now made this process easier and more accessible for those who need it, whether you’re a public figure, a high-profile organization, or simply concerned about your security. Proton Mail’s new key verification feature automatically checks your contacts’ public keys, so you can be sure you’re emailing the people you intend. Based on a cryptographic concept known as Key Transparency, it lets you check the status of your keys and those of your contacts using the web version of Proton Mail.
It works as follows: Your Proton Mail client (for now, our web app) checks if the public key retrieved from the server matches the one in the auditable Key Transparency directory which is stored on a private blockchain. This ensures that your Proton Mail client encrypts your message with the correct key and thus sends your email to your intended recipient.
Public keys aren’t directly published in a directory. Instead, we use hashed results of Proton Mail addresses and their public keys to protect your privacy.
Please note that this feature is currently in beta. Certain functionality is still being developed and refined.
Also note that even though Proton’s Key Transparency feature leverages blockchain technology, there is no public blockchain, token, or cryptocurrency associated with this feature in its current form.
Periodically, Proton Mail will run an audit to verify that your keys and your contacts’ keys are consistent with what was published in the Key Transparency directory.
To view more information about your and your contact’s public keys, you can check the results of this audit.
2. Go to Settings → All settings → Proton Mail → Encryption and keys and togglethe Verify keys with Key Transparency switch on.
To verify public keys
Sign in to mail.proton.me(nova janela) and go to Settings → Key verification (at the bottom of the quick settings panel).
You can now check:
If key verification was successful for your own addresses
If key verification detected an issue for your own addresses or your contacts who use Proton Mail
In the rare scenario when Proton Mail detects an issue with your or your contacts’ keys, you may see one of the following messages:
Proton Mail detected that changes you made recently to the keys of this address have not been properly applied — In this case, Proton Mail will prompt you to resolve the key issue in your key settings.
Proton Mail detected that keys used in the past for this address might not be authentic — In this case, Proton Mail will give you the fingerprint of the public key in question (a unique string of letters and numbers), which you can compare with the fingerprint the recipient sees in their account. If the fingerprints match, you can be certain your mail was delivered without being tampered with.
Proton Mail could not verify some changes made to this address’s keys in the past — This might be due to a recent key deletion or a password reset.
This address has been disabled and re-enabled recently. While it was disabled, data shared to this address might not have been encrypted with your keys.
Note that this screen will not list your contacts’ addresses that successfully passed key verification — it will only inform you when it detects an issue.
How to verify your contact’s keys using the composer
You can easily verify your contact’s keys when you send them a message. Using the Proton Mail web app, open the composer and enter the address of the contact you’d like to send a message to.
If Proton Mail successfully verifies their public key, you will see a blue lock icon next to their email address, and a tooltip that says End-to-end encrypted when you hover over it.
If Proton Mail detects an issue with your contact’s keys, you will see a red warning icon next to their email address, and sending messages to this address will be disabled for your security.
Note, it is possible for Proton’s Key Transparency system to give false positives, particularly since the feature is still in beta.If you have questions about Key Transparency or are not sure ifyou have encountered a false positive, please reach out to our support team.
Frequently asked questions
Is Key Transparency available on Proton Mail’s mobile apps?
Key Transparency is currently a beta release and is only available on the Proton Mail web app. It may come to our mobile apps at a later date.
Will Key Transparency only work with my contacts who have also enabled it?
Key Transparency works with all your Proton Mail contacts who use the web version of Proton Mail. They don’t need to enable the feature. Enabling Key Transparency simply lets you check the status of your public keys and those of your contacts.