Removing the header from the metadata

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An email typically contains metadata about its recipient and the sender's computer, browser, and network.

Many secure email providers remove this information.

Open source
Open source software makes its source code available to users and developers. This means that anyone can examine the product's code to ensure that it is secure.

Other encrypted functions
Your standard email provider may also provide other tools, such as Google Calendar and Google Drive with Gmail .

Some secure email providers offer similar features, but encrypted, such as a secure calendar or secure cloud storage .

Usability on desktop and mobile
You're moving to secure email for data encryption, but that doesn't mean user experience isn't important.

If you like to check your email on a mobile device, choose an malaysia whatsapp number data email provider that works well on mobile. You can't always add a secure provider to your favorite email client app.

Top 14 Secure Email Providers in 2025
Let's break down the top 14 secure email providers, including their key features and pricing.

1. ProtonMail
ProtonMail is the most popular secure email provider.

It's open source, based in Switzerland, and offers end-to-end asymmetric encryption. You can use ProtonMail for free if you send fewer than 150 messages a day and don't need much storage.

A cool feature of ProtonMail is the self-destructing of emails. You set an expiration date for an email, and it is deleted from the recipient's inbox at that time.

With ProtonMail, your data is stored with zero-access encryption. That means ProtonMail itself doesn't know your password and can't decrypt your emails. (It also means they can't reset your password.)

ProtonMail also offers a mobile app for Android and iOS.