all-in-one privacy solution":["Proton Unlimited es una solución de privacidad todo en uno"],"Black Friday":["Black Friday"],"No ads. Privacy by default.":["Sin anuncios. Privacidad por defecto."],"People before profits":["Primero las personas, luego los beneficios"],"Security through transparency":["Seguridad con transparencia"],"The best Proton Mail ${ BLACK_FRIDAY } deals":["Las mejores ofertas de Proton Mail en el ${ BLACK_FRIDAY }"],"The world’s only community- supported email service":["El único servicio de correo electrónico del mundo respaldado por la comunidad"]},"specialoffer:limited":{"${ hours } hour":["${ hours } hora","${ hours } horas"],"${ hoursLeft }, ${ minutesLeft } and ${ secondsLeft } left":["Tiempo restante: ${ hoursLeft }, ${ minutesLeft } y ${ secondsLeft }"],"${ minutes } minute":["${ minutes } minuto","${ minutes } minutos"],"${ seconds } second":["${ seconds } segundo","${ seconds } segundos"],"Limited time offer":["Oferta por tiempo limitado"]},"specialoffer:listitem":{"Create multiple addresses":["Cree múltiples direcciones"],"Hide-my-email aliases":["Seudónimos de hide-my-email"],"Quickly unsubscribe from newsletters":["Cancele suscripciones a boletines rápidamente"],"Use your own domain name":["Use su propio dominio"]},"specialoffer:logos":{"As featured in":["Tal como aparece en"]},"specialoffer:metadescription":{"Get an encrypted email that protects your privacy":["Obtenga un correo electrónico cifrado que protege su privacidad"]},"specialoffer:metatitle":{"Proton Mail Black Friday Sale - Up to 40% off":["Oferta de Black Friday de Proton Mail: hasta un 40% de descuento"]},"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.":["Aproveche las rebajas de Black Friday y obtenga suscripciones de Proton Mail con hasta un 40 % de descuento. Encontrará las mejores ofertas en planes de correo electrónico seguro cifrado de extremo a extremo."]},"specialoffer:newmetatitle":{"Proton Mail Black Friday sale | Up to 40% off secure email":["Rebajas de Black Friday en Proton Mail | Hasta un 40 % de descuento en correo electrónico seguro"]},"specialoffer:note":{"* Billed at ${ TOTAL_SUM } for the first year":["*Con un costo de ${ TOTAL_SUM } durante el primer año"],"*Billed at ${ TOTAL_SUM } for the first 2 years":["*Con un costo de ${ TOTAL_SUM } durante los primeros 2 años"],"30-day money-back guarantee":["Garantía de devolución de dinero de 30 días"],"Billed at ${ TOTAL_SUM } for the first 2 years":["Con un costo de ${ TOTAL_SUM } durante los primeros 2 años"],"Billed at ${ TOTAL_SUM } for the first year":["Con un costo de ${ TOTAL_SUM } durante el primer año"],"You save ${ SAVE_SUM }":["Ahorre ${ SAVE_SUM }"]},"specialoffer:off":{"${ DISCOUNT } off":["-${ DISCOUNT }"],"${ PERCENT_OFF } off":["-${ PERCENT_OFF }"]},"specialoffer:testimonial":{"I love my ProtonMail":["Amo mi Proton Mail"],"My favorite email service":["Mi servicio de correo electrónico favorito"],"Thanks Proton for keeping us all safe in the complicated internet universe.":["Gracias Proton por mantenernos a salvo en el complicado universo de 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":["Obtiene aquello por lo que paga. En el caso de la gran tecnología, cuando uno no paga nada, se acostumbra. Dejé de usar Gmail y cambié a @ProtonMail"]},"specialoffer:time":{"Days":["Días"],"Hours":["Horas"],"Min":["min"]},"specialoffer:title":{"And much more":["Y mucho más"],"Make your inbox yours":["Personalice su bandeja de entrada"],"Safe from trackers":["A salvo de rastreadores"],"Stay organized":["Mantenga el orden"],"Black Friday email deals":["Ofertas en correo electrónico del Black Friday"],"Don’t just take our word for it":["No confíe solo en nuestra palabra"],"Our story":["Nuestra historia"],"Transfer your data from Google in one click":["Transfiera sus datos de Google con un solo clic"]},"specialoffer:tooltip":{"Access blocked content and browse privately. Includes ${ TOTAL_SERVERS }+ servers in ${ TOTAL_COUNTRIES }+ countries, connect up to 10 devices, access worldwide streaming services, malware and ad-blocker, and more.":["Acceda a contenido bloqueado y navegue de forma privada. Incluye ${ TOTAL_SERVERS } servidores en más de ${ TOTAL_COUNTRIES } países, conecta hasta 10 dispositivos, acceda a servicios de transmisión en todo el mundo, malware y bloqueador de anuncios, y más."],"Easily share your calendar with your family, friends or colleagues, and view external calendars.":["Comparta su calendario con familiares, amigos y compañeros fácilmente y consulte calendarios externos."],"Includes support for 1 custom email domain, 10 email addresses, 10 hide-my-email aliases, calendar sharing, and more.":["Incluye compatibilidad con 1 dominio de correo electrónico personalizado, 10 direcciones de correo electrónico, 10 seudónimos de hide-my-email, posibilidad de compartir calendario, etc."],"Includes support for 3 custom email domains, 15 email addresses, unlimited hide-my-email aliases, calendar sharing, and more.":["Incluye compatibilidad con 3 dominios de correo electrónico personalizado, 15 direcciones de correo electrónico, seudónimos ilimitados de hide-my-email, posibilidad de compartir calendario, etc."],"Manage up to 25 calendars, mobile apps, secured with end-to-end encryption, 1-click calendar import from Google, and more.":["Administre hasta 25 calendarios, apps móviles, protegido con cifrado de extremo a extremo, importación de calendario con 1 clic desde Google y más."]},"Status Banner":{"At the moment we are experiencing issues with the Proton VPN service":["En este momento, tenemos problemas con el servicio Proton VPN."],"Learn more":["Más información"]},"Status banner":{"Learn more":["Más información"],"Please note that at the moment we are experiencing issues with the ${ issues[0] } service.":["Tenga en cuenta que, en este momento, estamos experimentando problemas con el servicio ${ issues[0] }."],"We are experiencing issues with one or more services at the moment.":["En este momento, tenemos problemas con uno o más servicios."]},"suggestions":{"Suggestions":["Sugerencias"]},"Support":{"Sub category":["Subacategoria","Subcategorías"]},"Support article":{"${ readingTime } min":["${ readingTime } minuto","${ readingTime } minutos"],"Category":["Categoría","Categorías"],"Didn’t find what you were looking for?":["¿No encontró lo que buscaba?"],"General contact":["Contacto general"],"Get help":["Obtener ayuda"],"Legal contact":["Contacto legal"],"Media contact":["Contacto para medios"],"Partnerships contact":["Contacto para colaboradores"],"Reading":["Lectura"]},"Support categories":{"Browse Proton product support":["Explore el soporte de productos de Proton"]},"Support category":{"There is no article in this category yet.":["Todavía no hay ningún artículo en esta categoría."]},"Support troubleshooting":{"--- Select ---":["--- Seleccionar ---"],"App version":["Versión de la app"],"Browser":["Navegador"],"Check if this helps":["Compruebe si le sirve"],"Choose a category for your question":["Elija la categoría de su pregunta"],"Choose a product":["Elija un producto"],"Did this solve your issue ?":["¿Resolvió su problema?"],"Faster assistance is just a few clicks away — please make your selections":["Obtenga ayuda más rápidamente con tan solo unos clics. Haga su selección."],"No, contact support":["No, contactar a soporte"],"Proton account":["Cuenta de Proton"],"Proton Bridge":["Proton Bridge"],"Proton Calendar":["Calendario de Proton"],"Proton Drive":["Proton Drive"],"Proton for Business":["Proton for Business"],"Proton Mail":["Correo de Proton"],"Proton Pass":["Proton Pass"],"Proton VPN":["VPN de Proton"],"Thank you for your feedback":["Gracias por sus comentarios"],"Troubleshooting":["Solución de problemas"],"What can we help with ?":["¿En qué podemos ayudar?"],"Yes":["Sí"]},"support_modal_search_query":{"Search query":["Consulta"]},"support_search_button":{"Search":["Buscar"]},"support_search_i_am_looking_for":{"I'm looking for":["Busco"]},"SupportForm":{"For a faster resolution, please report the issue from the Bridge app: Help > Report a problem.":["Para una resolución más rápida, reporte el problema desde la app Bridge: Ayuda > Reportar un problema."],"Information":["Información"]},"SupportForm:option":{"Account Security":["Seguridad de la cuenta"],"Contacts":["Contactos"],"Custom email domain":["Dominio de correo electrónico personalizado"],"Email delivery and Spam":["Entrega de correo electrónico y spam"],"Encryption":["Cifrado"],"Login and password":["Inicio de sesión y contraseña"],"Merge aliases and accounts":["Combinar alias y cuentas"],"Migrate to Proton":["Migrar a Proton"],"Notifications":["Notificaciones"],"Other":["Otros"],"Plans and billing":["Planes y facturación"],"Proton for Business":["Proton for Business"],"Sign up":["Regístrese"],"Storage":["Almacenamiento"],"Users, addresses, and identities":["Usuarios, direcciones e identidades"]},"SupportForm:optionIntro":{"Select a topic":["Seleccione un tema"]},"swiss_baseed_feature":{"Swiss based":["Con sede en Suiza"]},"Testimonial":{"Awards":["Premios"],"Customers":["Clientes"],"Featured":["Destacados"],"Go to testimonial source":["Ir a la fuente testimonial"],"Reviews":["Reseñas"],"Videos":["Videos"]},"Text":{"Find the plan that's right for you":["Encuentre el plan adecuado para usted"],"If you need help, check out our ${ supportLink }.":["Si necesita ayuda, consulte nuestra ${ supportLink }."],"The page you’re looking for might have been removed, or it could be an\nold link.":["Es posible que la página que busca haya sido eliminada o que sea un\nenlace antiguo."]},"Title":{"On this page":["En esta página"],"Related articles":["Artículos relacionados"],"Share ${ thisPage }":["Compartir ${ thisPage }"],"Thank you!":["¡Gracias!"],"this page":["esta página"]},"Tooltip":{"More information":["Más información"]},"tooltip_calendar":{"Create up to 20 custom & shareable encrypted calendars. On top of that, add up to 5 calendars from friends, family, colleagues, and organizations.":["Cree hasta 20 calendarios personalizados, compartibles y cifrados. Agregue hasta 5 calendarios de amigos, familiares, colegas y organizaciones."]},"tooltip_vpn":{"Access blocked content and browse privately. Includes ${ TOTAL_SERVERS }+ servers in ${ TOTAL_COUNTRIES }+ countries, highest VPN speed, ${ TOTAL_VPN_CONNECTIONS } VPN connections, worldwide streaming services, malware and ad-blocker, and more.":["Acceda a contenido bloqueado y navegue en privado. Tendrá a su disposición más de ${ TOTAL_SERVERS } servidores en más de ${ TOTAL_COUNTRIES } países, VPN de máxima velocidad, ${ TOTAL_VPN_CONNECTIONS } conexiones VPN, servicios de streaming en todo el mundo, bloqueadores de malware y de anuncios, y mucho más."],"Access blocked content and browse privately. Includes ${ TOTAL_SERVERS }+ servers in ${ TOTAL_COUNTRIES }+ countries, highest VPN speed, 10 VPN connections, worldwide streaming services, malware and ad-blocker, and more.":["Acceda a contenido bloqueado y navegue en privado. Tendrá a su disposición más de ${ TOTAL_SERVERS } servidores en más de ${ TOTAL_COUNTRIES } países, VPN de máxima velocidad, 10 conexiones VPN, servicios de streaming en todo el mundo, bloqueadores de malware y de anuncios, y mucho más."]},"version_history_label":{"Version history":["Historial de versiones"]},"version_history_tooltip":{"Store up to ${ versionHistoryNumber } versions of each file for up to ${ years } years":["Comparta hasta ${ versionHistoryNumber } versiones de cada archivo hasta durante ${ years } años"]},"vpn_features_link":{"View VPN plans":["Ver planes de VPN"]},"vpn_features_useCase":{"Access blocked content and browse privately":["Acceda a contenido bloqueado y navegue de forma privada"]}}},"unleashApi":"https://account.proton.me/api"};
// We need to import data (the framework context) from the server
// This Astro feature with define:vars works well but creates an inline script
// So we can't directly import the initFramework helper, we have to store the context
window.frameworkContext = frameworkContext;
})();
What is DKIM (DomainKeys Identified Mail)? | Proton
DKIM is an email authentication method that verifies that a message hasn’t been tampered with in transit. Learn how it works and why you need it to protect your email domain.
DKIM (DomainKeys Identified Mail) is an open standard for email authentication that cryptographically “signs” an email, helping verify that its sender’s address hasn’t been forged (spoofed(new window)) and its message hasn’t been tampered with in transit.
DKIM ensures that an email sent from your domain (for example, @yourdomain.com) is signed with an encryption key owned by your domain. This verifies that it came from a legitimate email server, not an attacker’s server that spoofed your domain.
What is DKIM used for?
DKIM is one of the main methods email servers use to authenticate emails. Together with SPF and DMARC, email platforms use DKIM to identify spoofed addresses, helping to sort and prevent spam(new window) and potential phishing(new window) emails.
If you send emails from your own domain (for example, yourname@yourdomain.com), you should use DKIM to help prevent attackers from spoofing it. If you don’t use DKIM, messages from your domain could be marked as spam or rejected by receiving mail servers.
What’s the difference between DKIM, SPF, and DMARC?
DKIM, SPF, and DMARC are email authentication methods that are used together to verify that emails are genuine. Here are the different roles they play:
DKIM (DomainKeys Identified Mail) cryptographically verifies that the sender’s address and email contents haven’t been changed in transit.
The server sending the email uses its DKIM private key to “sign” the email. When the message arrives, the server receiving the mail verifies the signature using the corresponding DKIM public key.
Here’s what happens when you send an email with DKIM:
The sending mail server creates a hash of the email contents (the From field, subject, message body, etc.) and encrypts it using a private key that only trusted sending mail servers know.
When the email arrives, the receiving mail server looks up the corresponding public key in your domain’s DNS records and decrypts the hash in the DKIM signature.
The receiving mail server then generates its own hashes from the message body and the fields in the email and compares them with the decrypted hashes in the DKIM signature.
If the hashes match, this verifies that the email hasn’t been changed while being sent, and it passes DKIM.
In short, if an email passes DKIM, we learn that:
The message was sent from the domain in the DKIM signature
The message hasn’t been tampered with in transit
If a message fails DKIM, the email is treated as suspicious: The receiving server may send it to the recipient’s spam folder or reject it.
What is a DKIM signature?
A DKIM signature is a digital signature that’s added to an email header(new window) to allow the receiving server to verify cryptographically that the message hasn’t been tampered with.
A DKIM signature consists of a series of tags, like v=1, a=rsa-sha256, etc., as in this example:
Here’s what the main tags mean:
DKIM signature tag
Meaning
Required?
v=1
DKIM version number (should always be v=1)
Yes
a
Algorithm used to create the digital signature
Yes
d
Domain name (used with the DKIM selector to locate the public key)
Yes
s
DKIM selector (used to locate the public key — see below)
Yes
t
Signature time
No
x
Expiration time
No
bh
Hash of the message body
Yes
h
List of the header fields included in the signature (separated by colons)
Yes
b
The digital signature generated from bh and h and signed with the private key
Yes
What DKIM signature tags mean
When a sent email arrives, here’s how the DKIM signature is checked:
The receiving mail server uses the DKIM selector (s) and domain name (d) to locate and fetch the public key and decrypt the digital signature (b).
The server then creates its own hash from the message body and checks it matches the hash in the bh field. Then it creates a hash of the headers (including the DKIM signature containing the bh field) and compares that hash with the digital signature it decrypts using the public key.
If these hashes match, this verifies that the email hasn’t been altered and the message passes DKIM.
What is a DKIM record?
A DKIM record is where the DKIM public key is stored. The DKIM record is published and publicly available on a domain’s DNS server, so any receiving mail server can retrieve it to verify a DKIM signature.
By looking for a particular DKIM selector and domain name, a receiving email server can find the corresponding public key to check a DKIM signature.
What is a DKIM selector?
A DKIM selector is a unique name that indicates where the public key is stored in a domain’s DNS server. It’s stored together with your domain name in a DKIM record.
When you send an email with DKIM, the DKIM selector is included in the DKIM signature as an s= tag. In the example below, the DKIM selector is protonmail2
You can see the DKIM selector for your domain by emailing yourself and checking the DKIM signature in the email header(new window).
Why use DKIM?
If you have your own domain name, we strongly recommend implementing DKIM, SPF, and DMARC. Here’s why:
Protect your domain
DKIM makes it hard for attackers to send emails pretending to be from your domain (email spoofing(new window)). Enabling DKIM will help to prevent bad actors from using your domain for spam or phishing attacks.
Improve email deliverability
Emails with a DKIM signature appear more legitimate and can be verified by a receiving mail server. So implementing DKIM for emails you send reduces the chances of them ending up in the spam folder.
Build your domain reputation
The more you send emails that pass DKIM and other authentication checks, the more you improve your domain’s sending reputation with internet service providers (ISPs) and email providers. So DKIM can help improve your emails’ deliverability over the long term.
Set up a single domain with Proton Mail Plus or get Proton Unlimited with support for three domains, 15 addresses, 500 GB of storage, and unlimited hide-my-email aliases.
Secure, seamless communication is the foundation of every business. As more
organizations secure their data with Proton, we’ve dramatically expanded our
ecosystem with new products and services, from our password manager to Dark Web
Monitoring for cr
On the subject of cybersecurity, one term that often comes up is brute force
attack. A brute force attack is any attack that doesn’t rely on finesse, but
instead uses raw computing power to crack security or even the underlying
encryption.
In this a
Section 702 of the Foreign Intelligence Surveillance Act has become notorious as
the legal justification allowing federal agencies like the NSA, CIA, and FBI to
perform warrantless wiretaps, which sweep up the data of hundreds of thousands
of US citi
In response to the growing number of data breaches, Proton Mail offers a feature
to paid subscribers called Dark Web Monitoring. Our system checks if your
credentials or other data have been leaked to illegal marketplaces and alerts
you if so. Often
Your email address is your online identity, and you share it whenever you create
a new account for an online service. While this offers convenience, it also
leaves your identity exposed if hackers manage to breach the services you use.
Data breaches
Our mission at Proton is to help usher in an internet that protects your privacy
by default, secures your data, and gives you the freedom of choice.
Today we’re taking another step in this direction with the launch of our open
source password manage