PGP email encryption services
Sub Rosa: Webmail interface supports server side GPG/PGP message encryption, their servers are located outside the EU and do not store any logs, service can be accessed with Tor using a dedicated .onion address.
Countermail: Supports OpenPGP encryption and digital signatures for webmail, it also hides your IP on the headers, servers located in Sweden.
AnonymousSpeech: PGP email encryption supported, IP is hidden in the headers, the servers are located outside the US and Europe, guarantee not to reply to correspondence of foreign Governments.
Posteo: Cheap privacy email service in Germany that aims to keep customer to the minimum and comes preconfigured to use Mailvelope, a free plugin to send encrypted PGP mail.
TorGuard Email: Anonymous email service from VPN provider TorGuard, it can send and receive messages encrypted with PGP, you can have it for free if you buy their VPN service or pay for a stand alone email account.
StartMail: Made by the same company that manages privacy search engine StartPage. This email service is based in the Netherlands and the interface allows you to encrypt and decrypt emails using PGP.
4SecureMail: Support for wemail PGP encryption and signing, all emails get scanned with a ICSA-Certified antivirus, your computer IP is hidden and not forwarded with the messages.
HushMail: Web based support for PGP encryped email and digital signatures, computer IP hidden in the headers, company headquarters based in Canada.
S-Mail: PGP email encryption and digital signatures support.
SecureNym: Public/private key email encryption and digital signatures support.
Safe-Mail: Israeli company supporting PGP email encryption and digital signatures as well as using of digital certificates for sending encrypted messages using the web interface. Safe-Mail DOES NOT hide your computer IP on the headers.
NeoMailBox: Supports OpenPGP encryption and digital signatures, it will hide your IP on the headers and you can choose to host your email in the US or Switzerland.
KeptPrivate: All of your email messages are kept encrypted in their servers using the Blowfish algorithm, no support for PGP, the person you are emailing to will need a KeptPrivate email account too in order to sent emails encrypted.
E-mail clients supporting OpenPGP encryption
Claws Mail: Claws Mail supports GnuPG email encryption and decryption installing the GPG plugin. This is a multi platform email client, it works in Windows and Linux.
The Bat!: Premium email client that allows PGP email encryption, spam filtering and scripting.
Sylpheed: Open source multi platform email client and newsgroup reader supporting GnuPG email encryption.
Software to encrypt emails using GPG/PGP
PGP Desktop Email: Paid for business oriented application to encrypt all outgoing email communications with PGP.
Safester: Propietary mail client using OpenPGP, this tool lets you exchange encrypted messages with other users of the same software and invite non users.
ArticSoft: Premium OpenPGP encryption and digital signature software to encrypt emails and files.
GPG4Win: Windows GnuPG software for email and file encryption, you will need gnupg to make it work, this comes included in the package.
GnuPG: GnuPG, also known as GPG, is a command line tool for GPG encryption, you will need a front end GUI unless you are willing to use command line from C: to encrypt your emails.
PGP public Key servers list
Note that you only need to upload your public key to one of the servers and it will propagate to all the others, also note that all of the PGP/GnuPG encryption software comes with some predefined keyservers where to get encryption keys from.
- https://keyserver.pgp.com (PGP Corporation KeyServer)
- http://pgp.mit.edu (Massachusetts Institute of Technology Keyserver)
- http://pgp.nic.ad.jp (Japan KeyServer)
Alternative to email encryption
Lockbin: Web application to send private email messages and files, use of AES256 symmetric encryption to secure your messages in the server with the site sending a link to your contact who will need to know the password beforehand.
SendInc: Fast and free way to send encrypted email through a web form, the site is secured with SSL. A paid for version gives you extra features like more space and big attachments.
Note: The services above will log your computer IP when you send an email, the IP might not be included in the message header but it can be recovered from the server logs in case of abuse.