Switch to Protonmail Reason #34: Keep correspondence about health, finances, or legal matters encrypted in storage
Messages about a diagnosis, debt, or a dispute can remain in a mailbox for years.
Digital Self-Defense
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Switch to Protonmail Reason #33: Detect tampering with supported signed contact information
Changing a stored contact detail could redirect a private message or call toward an attacker.
Switch to Protonmail Reason #32: Use encrypted contacts for sensitive details such as phone numbers and addresses
A contact book can expose the identities and personal details of many people besides you.
Switch to Protonmail Reason #31: Filter known spam and malware before it lands in your inbox
Malicious attachments and scam campaigns often arrive as ordinary-looking mail.
Switch to Protonmail Reason #30: Confirm a destination before opening a suspicious email link
A link can display one name while sending you to a lookalike login page.
Switch to Protonmail Reason #29: Get phishing warnings before trusting an impersonated sender
A fake invoice or reset notice can take credentials in minutes.
Switch to Protonmail Reason #28: Review authentication logs for suspicious account access
A quiet account takeover can continue while you assume your mailbox is safe.
Switch to Protonmail Reason #27: Protect your mailbox with a security key or authenticator-based two-factor login
A stolen password can give an intruder access to your inbox and the reset links for many other accounts.
Switch to Protonmail Reason #26: Check a message's lock icon before assuming it was encrypted end to end
A secure-looking inbox does not mean every route to an outside recipient had end-to-end protection.
Switch to Protonmail Reason #25: Get a warning when a trusted contact's encryption key changes unexpectedly
A changed key can be legitimate, but it deserves attention before confidential mail goes out.
Switch to Protonmail Reason #24: Verify a trusted correspondent's PGP key before sharing sensitive information
Encryption to the wrong key can defeat the point of a protected message.
Switch to Protonmail Reason #23: Use PGP with outside contacts who have configured it
A contact's unwillingness to change providers does not have to force plaintext email.
Switch to Protonmail Reason #22: Set an expiration date on a password-protected external message
A sensitive link should not stay available indefinitely after its purpose ends.
Switch to Protonmail Reason #21: Send password-protected encrypted mail to someone outside Proton
Ordinary email to another provider may be readable by that provider.
Switch to Protonmail Reason #20: Limit the damage when a newsletter sells or shares your address
A newsletter signup can spread beyond the publisher through partners, brokers, or a breach.
Switch to Protonmail Reason #19: Separate job applications from accounts tied to your employer
Career moves can be sensitive.
Switch to Protonmail Reason #18: Give political or advocacy groups an address separate from your daily identity
Association with a cause should not automatically expose the address used for banking or family mail.
Switch to Protonmail Reason #17: Keep a public contact address separate from private account recovery
A public address is easy for attackers to scrape and target with password-reset messages.
Switch to Protonmail Reason #16: Make it harder to join your shopping and financial accounts by email address
The same email address is a convenient key for matching records across businesses and data brokers.
Switch to Protonmail Reason #15: Identify which service exposed an address by checking the alias that receives spam
When every company gets the same address, it is hard to know where unwanted mail began.