What is Proton Mail?
ProtonMail is a webmail application founded in 2013. It uses client-side encryption to protect email content and other data of users before it sent to ProtonMail servers, unlike other email providers like Gmail, Yahoo, etc. It is available in various languages like English, Spanish, French, Dutch, Turkish, Russian, etc.

ProtonMail Storage Capacity
ProtonMail comes in three different plans with different storage capacity and features among them.
| ProtonMail Free | ProtonMail Plus | ProtonMail Visionary | |
|---|---|---|---|
| Storage | 500 MB | 5 GB | 20 GB |
| Address | 1 Address | 5 Addresses | 50 Addresses |
| Domain | No custom domains | One Custom Domain | 10 Custom Domains |
| Supports | Limited support | Support | Priority support |
| Priority support | 20 labels | 200 labels | Unlimited Labels |
| Plans | Free | Pay yearly, $4.00 per month | Pay monthly, $5.00 per month |
| Message limits | 150 messages per day | 1000 messages per day | Unlimited messages |
| Download to Free | Update Plus | Upgrade Visionary |
Features of Proton Mail
- ProtonMail launched ProtonMail Bridge app for end-to-end encryption to any desktop email client.
- Full PGP support
- Capable to send encrypted emails to non-ProtonMail users.
- Available for Android and iOS mobile apps
- Capable to send self-destructing messages, that are automatically deleted as the sender specifies.
- Available in multiple languages – English, Spanish, Romanian, Russian, Italian, Polish, Dutch, etc.
Pros of Proton Mail
- Webmail, encryption algorithms, and open-source application
- Used with many desktop clients through ProtoMail bridge app
- Import contacts and emails using the Bridge
- App for iOS and Android mobile devices
- Zero-access encryption for emails, calendar, and contact information
Cons of Proton Mail
- It does not encrypt email subject lines
- Utilizes phone number verification
ProtonMail Servers and data security
ProtonMail saves all its emails in encrypted form so no other user can read your email messages. The messages that you send or receive are automatically protected by end to end encryption mechanism. For creating a message, go to the Encryption option and enter a security password. The receiver will get a link of the message and prompted to enter the security password to read the email message.

ProtonMail DDOS Attack
ProtonMail provides protection from DDOS attack and secure your emails. All emails of ProtonMail mailboxes are stored as well as protected by end-to-end encryption. ProtonMail is one of the most secure email options available for users.
Conclusion
With this article, we have discussed all the relevant information about ProtonMail including its features, storage capacity, security, DDOS attacks, etc. It has been widely used and well known among users for its security features.

