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La prima regola è la privacy."],"People before profits":["Le persone prima dei profitti"],"Security through transparency":["Più sicurezza grazie alla trasparenza"],"The best Proton Mail ${ BLACK_FRIDAY } deals":["Le migliori offerte di Proton Mail per il ${ BLACK_FRIDAY }"],"The world’s only community- supported email service":["L'unico servizio di email al mondo supportato dalla community"]},"specialoffer:limited":{"${ hours } hour":["${ hours } ora","${ hours } ore"],"${ hoursLeft }, ${ minutesLeft } and ${ secondsLeft } left":["Restano ${ hoursLeft }, ${ minutesLeft } e ${ secondsLeft }"],"${ minutes } minute":["${ minutes } minuto","${ minutes } minuti"],"${ seconds } second":["${ seconds } secondo","${ seconds } secondi"],"Limited time offer":["Offerta a tempo limitato"]},"specialoffer:listitem":{"Create multiple addresses":["Crea indirizzi multipli"],"Hide-my-email aliases":["Alias hide-my-email"],"Quickly unsubscribe from newsletters":["Annulla rapidamente l'iscrizione alle newsletter"],"Use your own domain name":["Utilizza il tuo nome di dominio"]},"specialoffer:logos":{"As featured in":["Ne hanno parlato"]},"specialoffer:metadescription":{"Get an encrypted email that protects your privacy":["Scegli un'email cifrata per proteggere la tua privacy"]},"specialoffer:metatitle":{"Proton Mail Black Friday Sale - Up to 40% off":["Offerta Black Friday di Proton Mail - sconti fino al 40%"]},"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.":["Per questo Black Friday ti offriamo fino al 40% di sconto sugli abbonamenti a Proton Mail. Scopri le straordinarie offerte sui piani di abbonamento alla nostra email dotata di crittografia end-to-end."]},"specialoffer:newmetatitle":{"Proton Mail Black Friday sale | Up to 40% off secure email":["Offerta di Proton Mail per il Black Friday | Fino al 40% di sconto sulla nostra email sicura"]},"specialoffer:note":{"* Billed at ${ TOTAL_SUM } for the first year":["* Addebito di ${ TOTAL_SUM } per il primo anno"],"*Billed at ${ TOTAL_SUM } for the first 2 years":["*Addebito di ${ TOTAL_SUM } per i primi 2 anni"],"30-day money-back guarantee":["Garanzia soddisfatti o rimborsati di 30 giorni"],"Billed at ${ TOTAL_SUM } for the first 2 years":["Addebito di ${ TOTAL_SUM } per i primi 2 anni"],"Billed at ${ TOTAL_SUM } for the first year":["Addebito di ${ TOTAL_SUM } per il primo anno"],"You save ${ SAVE_SUM }":["Risparmi ${ SAVE_SUM }"]},"specialoffer:off":{"${ PERCENT_OFF } off":["−${ PERCENT_OFF }"]},"specialoffer:testimonial":{"I love my ProtonMail":["Adoro ProtonMail"],"My favorite email service":["Il mio servizio email preferito"],"Thanks Proton for keeping us all safe in the complicated internet universe.":["Grazie Proton perché ci proteggi nell'universo complicato di 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":["Ottieni quello per cui hai pagato. Nel caso di big tech, se non paghi niente, vieni usato. Ho smesso di usare Gmail e sono passata a @ProtonMail"]},"specialoffer:time":{"Days":["Giorni"],"Hours":["Ore"],"Min":["Min"]},"specialoffer:title":{"And much more":["E altro ancora"],"Safe from trackers":["Protezione dai tracker"],"Stay organized":["Tieni tutto in ordine"],"Black Friday email deals":["Offerte email del Black Friday"],"Don’t just take our word for it":["Non lo diciamo solo noi"],"Make your inbox yours":["Rendi la tua posta in arrivo davvero tua"],"Our story":["La nostra storia"],"Transfer your data from Google in one click":["Trasferisci i tuoi dati da Google con un solo clic"]},"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.":["Accedi a contenuti bloccati e naviga in modalità privata. Include oltre ${ TOTAL_VPN_SERVERS } server in più di ${ TOTAL_VPN_COUNTRIES } Paesi, possibilità di connettere fino a 10 dispositivi, accesso a servizi di streaming in tutto il mondo, anti-malware, ad-blocker e altro ancora."],"Easily share your calendar with your family, friends or colleagues, and view external calendars.":["Condividi facilmente il tuo calendario con familiari, amici o colleghi e visualizza calendari esterni."],"Includes support for 1 custom email domain, 10 email addresses, 10 hide-my-email aliases, calendar sharing, and more.":["Include il supporto per 1 dominio email personalizzato, 10 indirizzi email, 10 alias hide-my-email, condivisione del calendario e altro ancora."],"Includes support for 3 custom email domains, 15 email addresses, unlimited hide-my-email aliases, calendar sharing, and more.":["Include il supporto per 3 domini email personalizzati, 15 indirizzi email, alias hide-my-email illimitati, condivisione del calendario e altro ancora."],"Manage up to 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readingTime } min":["${ readingTime } minuto","${ readingTime } minuti"],"Category":["Categoria","Categorie"],"Didn’t find what you were looking for?":["Non hai trovato quello che cercavi?"],"General contact":["Contatti generali"],"Get help":["Ottieni supporto"],"Legal contact":["Contatti legali"],"Media contact":["Contatti per la stampa"],"Partnerships contact":["Contatti per collaborazioni"],"Reading":["Lettura"]},"Support Form Platform option":{"VPN for Android TV":["VPN per Android TV"],"VPN for Apple TV":["VPN per Apple TV"],"VPN for Chromebook":["VPN per Chromebook"]},"Support troubleshooting":{"App version":["Versione dell'app"],"Browser":["Browser"],"Check if this helps":["Verifica se questo ti è utile"],"Choose a product":["Scegli un prodotto"],"Did this solve your issue?":["Ha risolto il tuo problema?"],"Faster assistance is just a few clicks away":["Ottieni assistenza più velocemente con pochi clic"],"How can we help?":["Come possiamo aiutarti?"],"No, contact support":["No, contatta il supporto"],"Please fill out one field after another":["Compila un campo dopo l'altro"],"Please make your selections":["Fai la tua selezione"],"Proton account":["Account Proton"],"Proton for Business":["Proton for Business"],"Thank you for your feedback":["Grazie per il feedback"],"What can we help with?":["In cosa possiamo esserti di aiuto?"],"Yes":["Sì"]},"support_modal_search_query":{"Search query":["Query di ricerca"]},"support_search_button":{"Search":["Cerca"]},"support_search_i_am_looking_for":{"I'm looking for":["Sto cercando"]},"SupportForm":{"For a faster resolution, please report the issue from the Bridge app: Help > Report a problem.":["Per una risoluzione più rapida, segnala il problema dall'app Bridge: Aiuto > Segnala un problema."],"Information":["Informazioni"]},"SupportForm:option":{"Account Security":["Sicurezza dell'account"],"Contacts":["Contatti"],"Custom email domain":["Dominio email personalizzato"],"Email delivery and Spam":["Consegna delle email e 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Many of you might have noticed that Proton Mail had a brief scheduled downtime last week. That was actually the first step of a major infrastructure upgrade that we have just completed. Thanks to the support from our crowdfunding contributors(nuova finestra) and around-the-clock work of our team, Proton Mail today is more secure and reliable than it has ever been, even with the huge number of additional users we have recently invited from the waiting list.
For those users who have been on our waiting list for several months, the wait will soon be over as our new infrastructure will allow us to support almost everybody. We will be inviting nearly everybody over the next month!The reason it has taken us so long to get to this point is because building an email architecture that is secure, scalable, and also reliable is no easy task. In this post, we will be describing some of the work the Proton Mail team has been doing in the past couple months to keep your data safe.
Hardware and Network
Proton Mail’s infrastructure scaling is complicated by the fact that we run our own servers which means we also need to build in redundancy on the hardware and network level which greatly increases the required effort. Fortunately, our team has worked on building and managing large scale systems at CERN(nuova finestra) and are able to draw from that experience.
Because Proton Mail’s encryption is zero access and we do not have the ability to read our user’s encrypted data, in some ways, it does not matter where we store encrypted data. However, as we have seen in the past, third parties simply cannot be trusted(nuova finestra) to safeguard online privacy and freedom. The ONLY way to ensure the highest level of data security and uptime is to have full control over the server hardware and network. This is why despite the added difficulty and complexity, we go a step beyond and only use hardware that we physically own and control within Switzerland to host Proton Mail.
All of our servers feature fully encrypted disks and we use RAID arrays with high redundancy for our storage. The redundancy even extends to the way we power our servers. Within each datacenter, only half of our servers are connected to a single power unit so a failure of an upstream power unit cannot take all servers offline.
Datacenter Redundancy
While we have excellent redundancy within our main datacenter, to ensure even higher reliability, Proton Mail began to build out in a second datacenter this summer. Today, Proton Mail’s hardware infrastructure is spread out across two datacenters in Switzerland to ensure that a catastrophic disaster at one datacenter will not lead to data loss. In a follow up post, we will talk more about Proton Mail’s datacenters.
Infrastructure Architecture
The diagram below gives a high level overview of Proton Mail’s latest architecture after last week’s upgrade. The overarching design philosophy is to eliminate as many single points of failure as possible in order to make Proton Mail the most reliable encrypted email service ever built.
Load Balancing
As Proton Mail’s userbase grew, we rapidly exceeded the capacity of a single server which made it necessary to load balance across multiple servers. Our load balancing system splits the load among multiple web and mail servers and also provide instantant failover in the event of a web or mail server crash.
Web Servers
All Proton Mail servers (web servers included) exclusively run open source software and are Linux based. Our architecture allows additional web servers to be added without downtime. Furthermore, any individual web servers can be taken offline without impacting users. This gives full redundancy in the event of a web server failure, and also allows us to take machines offline at any time to perform security updates.
Mail Servers
Proton Mail’s mail infrastructure is also fully redundant and any mail server can fail without impacting inbound or outbound mail deliverability. Our mail software architecture also allows us to buffer mail on the mail servers. This means in the event of a database failure, mail servers can save incoming messages until the database servers come back online so a database failure will not lead to the loss of incoming messages.
Database Layer
We use a cluster of database servers to store encrypted user messages. We have multiple SQL servers with automatic failover which allows us to lose SQL servers without system downtime. The data servers are clusterized so that individual data servers can be lost without leading to data loss or downtime.
As an additional layer of security, we have a backup data cluster which replicates from the master cluster in real time so in the event of a catastrophic failure of the primary cluster, we can switch to the backup with minimal data loss.
DNS
For added security against DNS attacks and better control over our domain, Proton Mail also runs our own DNS infrastructure which is distributed between our two datacenters for redundancy. Our DNS root zone is managed by SWITCH(nuova finestra) which administers .ch domain names on behalf of the Swiss Federal Office of Communications (OFCOM).
Monitoring
Proton Mail utilizes a sophisticated monitoring system that is also distributed between two datacenters in order to monitor the health of our hardware and also detect for potential network intrusions or abnormalities.
Looking Forward
When Proton Mail was first opened to the public back in May, our architecture at that time was run on just two servers (a primary and a backup) and was rapidly overloaded(nuova finestra) by users from around the world. Our current architecture is a huge advancement from that and would not have been possible without many months of hard work from our team and the support of our crowdfunding contributors(nuova finestra).
There is still much infrastructure work to be done and we will continue to add improvements on two main fronts. First, we will keep pushing to eliminate single points of failure to reduce the risk of downtime. Secondly, we will work on bringing more components of the internet infrastructure needed to run Proton Mail under our direct control to improve privacy and reliability. We recently took a step in this direction by joining Réseaux IP Européens NCC and becoming a Local Internet Registry which serves Proton Mail exclusively. As you can see, we are far from done and 2015 will certainly be a busy year!