Is email encrypted?
Mostly not. Nearly all email is encrypted on the way, but Gmail, Outlook, Yahoo Mail and iCloud Mail hold the keys to your mailbox, so they can read it. Proton Mail and Secria Mail seal mail between their own users and lock your stored mailbox.
Checked on 25 October 2026. 6 apps, 31 sources.
Made by Secria. Secria Mail is ours, and it's graded and sorted by the same rules as everyone else. How we check
Sorted by how many parts are sealed by default, then by how many can be. Ties go A to Z.
| App | Between its own users | To other services | Stored mailbox | Post‑quantum |
|---|---|---|---|---|
| Secria MailMade by us | Only you and the people you write to | Partly | Only you | Yes |
| Proton MailProton | Only you and the people you write to | Partly | Only you | Yes, once you turn it on |
| GmailGoogle | Google can read it | Google can read it | Google can read it | Not yet |
| iCloud MailApple | Apple can read it | Apple can read it | Apple can read it | Not yet |
| OutlookMicrosoft | Microsoft can read it | Microsoft can read it | Microsoft can read it | Not yet |
| Yahoo MailYahoo | Yahoo can read it | Yahoo can read it | Yahoo can read it | Not yet |
Want a mailbox only you can read?
Gmail, Outlook, Yahoo Mail and iCloud Mail all hold the keys to your mailbox. Secria Mail is the email we make: your mailbox is locked with a key made from your password, on your device. We don't read your mail, show ads or build a profile.
Create a free encrypted addressFree plan. Keep your old address while you switch.