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With the rise of phishing attacks (fraudulent emails masking as legitimate individuals or organizations), Secure Email Signing Certificates - also known as S/MIME certs - have become not just an optional provision, but a requirement if you want to get your messages digitally signed.

Digitally signing and encrypting communications with one of our Email Certificates will secure your email and verify yourself as the sender with a unique private key setup. The content of the email will also be verified as unmodified and legitimate with the S/MIME implementation.

Our email certificate solutions are supported by all popular mail applications and let you secure email messages, as well as a variety of other communication vectors. Including Microsoft Exchange and Outlook Web App, Apple Mail, Gmail, Thunderbird, and others. Using these SSL certificates, you can ensure total recipient compatibility and industry-standard end-to-end encryption.

With an S/MIME solution, you can get a top-grade digital signature for all of your communication channels.

Your signed and encrypted messages cannot be intercepted and decrypted by attackers. Dangers such as those of man-in-the-middle attacks, packet-sniffers, or HTTPS proxies are all nullified in one fell swoop. Email security is easy if you stick with SSLTrust and S/MIME certs in our repertoire, and you could have your very own digital signature in record time.

Email Signing Certificates
ProductLowest PriceSecuresValidationIssuance Time 
Comodo Personal Authentication Certificate$12.65 / yr
$22 Saved
Email, Document, Two-Factor AuthEmail1-15 minutes
Comodo Email & Identity Authentication Certificates$29.98 / yr
$54 Saved
Email, Document, Two-Factor AuthEmail and Identity1-3 days
Comodo Email, Identity and Business Authentication$39.98 / yr
$60 Saved
Email, Document, Two-Factor AuthEmail, Identity and Business1-5 days
DigiCert S/MIME Email Certificate$15.29 / yr
$10 Saved
EmailEmail1-5 minutes
Most PopularDigiCert Premium Client Certificate$33.12 / yr
$13 Saved
Email, Document, Two-Factor AuthEmail, Identity and Business1-5 days
Comodo DigiCert
24/7 Support
Money Back Guarantee
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Email Security

Don't leave Your Email Security to Chance

Also known as Personal Identification Certificates or S/MIME certificates, secure email signing certificates are a great way to ensure safety for employees, organizations, and infrastructure. Digital signatures are one of the easiest and simplest ways of ensuring that your email messages are not intercepted by malicious elements.

Not only can you use S/MIME Email Encryption Certificates for email signing, but you can also use them to get your Office and Open Office documents digitally signed, too. This ensures that the received document had not been modified in any way, shape, or form, and that it was signed by you specifically.

Your digital signature cannot be faked once it's protected by a signing certificate. This alone makes S/MIME signing certificates - such as the ones available via SSLTrust - a must-have for secure communication. Your private key for digital signatures can be combined with the recipient's private key in remarkably short order, thus minimizing the odds of your email messages getting compromised.

How does an S/MIME Email Certificate Work?

Email-centric SSL certificates (S/MIME) are built from the ground up to serve as special sender-recipient communication validation solutions. These certificates supply webmasters with dedicated digital signatures which add the ability to send encrypted messages from point A to point B. They can help you get digitally signed in every imaginable context. From intra-organization communications all the way to encryption of private messages. Depending, of course, on where they've been implemented.

The goal of an S/MIME is delightfully simple: to ensure that each and every document transit, message, or any other type of online data exchange is protected. You can turn any point of communication into an encrypted message, for all intents and purposes. As a service, these validation options use PKI (Public Key Infrastructure) to do the following:

  • let users sign their emails digitally, so as to apply a Certificate Authority's identity validation
  • encrypt the entire contents of said emails before they are sent online

This combination of features can protect from even the most relentless data mining attempts on the Internet. An email featuring a digital certificate installation of this type will successfully protect all users, allowing you to send an encrypted message using any of your internal communication services. All thanks to special, purpose-built digital signatures. Whether they are the sender or the recipient, it matters little - the S/MIME email certificate will safeguard everyone involved.

S/MIME Certificates and Secure Email Sending

S/MIME certificates also allow you to set up two-factor authentication of users that log in to your organization's intranet and systems. This ensures a secure mailing domain across all email clients, bolstering your integrated security solutions.

The goal is always for your messages to get to their intended recipient and no one else. The catch, however, is that you'll need an SSL S/MIME security implementation to guarantee that. Digital data security is a tricky business in modern times. Relying on SSL encryption on the Internet is the only way to enjoy any level of web security in 2021.

Secure email sending might sound like redundant phrasing, but it's really not. If you value security, and if your data matters a great deal, an SSL is a must-have.

Sending Secure Email

Should You keep your e-mail communication safe?

You should do your best to maintain security on your IP address and domain. Make your company stand out to both private and enterprise-grade users with email certificates provided by industry-leading SSL providers.

Invest in data protection today: it's better to have an S/MIME implementation and not need it, rather than find yourself in a situation where you need an SSL, but don't have it. Reach out to SSLTrust today and make use of our support service in a matter of minutes, with your very own digital signatures.

Certificate Signed Email

What are the best Certificate Authorities for Secure Email Signing?

Here at SSLTrust, we offer SSL certificates from two major Certificate Authorities: Comodo and DigiCert.

These CAs' S/MIME SSLs will secure any organization or business domain online, as well as offering a total service model. Customer support is available every step of the way, from installation to ongoing security issues.

You'll need to decide whether Comodo or DigiCert offers the best public-key security for your particular business. In practice, both CAs are tremendously valuable, and will quickly sign and encrypt your email certificates.

Either way, you can rest easy knowing that all of your users' communication will be well-protected on your domain with an email certificate of this caliber.

Email Certificate FAQ

Email signing certificates (S/MIME) are a comprehensive cryptographic security solution that ensures the authentication, integrity, privacy, and non-repudiation of the origin of protected lines of communication.

Email certificates are necessary for enterprise-grade communication (e. g. sensitive data transfer), but they've become increasingly important for private data as well. Also known as S/MIME SSL, they can be used in a variety of ways, from web server integration to Microsoft Outlook safeguarding.

If you're a business owner, you should get an Email Certificate. Investing in S/MIME certificates is key to guaranteeing safety from data theft. Safety for your employees, users, and for your business partners - all equally crucial for your enterprise's authority.

You can get top-of-the-line email safety SSL right here at SSLTrust. In fact, you'll find an amazing array of options right on this page, featuring Comodo and DigiCert Certificate Authorities.

You can certify your email in the settings menu of your email client. The exact option setup will vary, of course, but on Microsoft Outlook, you can follow this path to enable certification:

File/Options/Trust Center/Trust Center Settings/Email Security (left pane)/ Encrypted Email/Settings/Certificates and Algorithms/Choose

There, you'll be able to pick your S/MIME certificate for encryption.

All of your available email SSL S/MIME products will be visible in the settings/options menu(s) of the specific client application you may be using. On Outlook, it's a simple enough process:

File/Options/Trust Center/Trust Center Settings/Email Security (left pane)/Encrypted email/Settings/Certificates and Algorithms/Choose

This will open up a list of available SSLs. All you need to do is to click the one you're interested in, and hit 'View'.

You can export/download your installed S/MIME email certificates on any modern email client. Of course, every client application has its own settings menu and option tree, so you'll need to do some digging or consult with the support team - if one is available.

Using Outlook, you can follow this path to export your S/MIME SSL:

File/Options/Trust Center/Trust Center Settings /Email Security (left pane)/ Digital IDs/Import-Export/Export Your Digital ID to a file

Then, you'll be greeted by a window to choose the desired location of the exported email certificate. Enter your password, hit 'OK', and you'll have your email certificates downloaded in no time.

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Comodo Personal Authentication Certificate

Lowest price guarantee, starting as low as $12.65 /yr

Get the Comodo entry-level S/MIME Personal Authentication Certificate to Digitally Sign and Encrypt your email and documents. Ensure message integrity with end-to-end encryption. Have your recipients see you as the verified sender.

Comodo Email and Identity Authentication Certificate

Lowest price guarantee, starting as low as $29.98 /yr

Get your email and identity verified using a Comodo S/MIME to ensure that your recipients can easily and safely verify your identity. Stop any phishing attempts on your email address, and encrypt emails with your own Digital Signature provided by Comodo.

Comodo Email, Identity and Business Authentication Certificate

Lowest price guarantee, starting as low as $39.98 /yr

Have your email, identity, and business details verified by a Comodo S/MIME and shown to your recipients. All your emails and attachments can easily be encrypted using your own private key and the recipient's public key (or vice-versa). Have your critical documentation signed to assure that it had not been modified. Comodo understands that safety is key for continued business, and their S/MIME SSL can help you bolster your enterprise's growth.

DigiCert S/MIME Email Certificate

Lowest price guarantee, starting as low as $15.29 /yr

Encrypt and sign your emails with end-to-end S/MIME encryption provided by DigiCert, one of the most prominent SSL providers around. DigiCert technology is a key component of many security systems around the globe. Ensure that your recipients are getting your emails without any malicious modifications with DigiCert.

DigiCert S/MIME Premium Client Certificate

Lowest price guarantee, starting as low as $33.12 /yr

Personal ID Certificates (Client certificates) are used to verify the identity of an individual. This DigiCert SSL allows you to encrypt, digitally sign and verify emails and documents across the board. It's a highly versatile S/MIME option that can quickly, easily, and affordably protect your email setup, too.