Who is S/MIME Email Signing for?

S/MIME Email Signing is an open-source project built for wordPress administrators.

Is S/MIME Email Signing free?

Yes — S/MIME Email Signing is open source under the Open Source license and free to use.

What platforms does S/MIME Email Signing run on?

S/MIME Email Signing runs on the web.

Is S/MIME Email Signing still active?

Unverified. S/MIME Email Signing has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

Who makes S/MIME Email Signing?

S/MIME Email Signing is developed by Liups233.

When did S/MIME Email Signing launch?

S/MIME Email Signing first shipped in 2025.

Is S/MIME Email Signing open source?

Yes — S/MIME Email Signing is open source under the Open Source license.

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S/MIME Email Signing

Name: S/MIME Email Signing
Author: Liups233

wordpress.orgInfrastructure

S/MIME Email Signing is an open-source WordPress plugin that signs all outbound emails with an S/MIME certificate, enhancing email security and authenticity for WordPress site administrators. It integrates with PHPMailer and supports certificate management.

Open SourceWeb

Visit wordpress.org

Overview

5 features

S/MIME Email Signing sits in PulseGate's Email & inbox category. It focuses on enabling secure email signing for WordPress sites using S/MIME certificates. It is built as an open-source project for wordPress administrators. The project is open source (Open Source). S/MIME Email Signing is available on the web.

Liups233 builds and maintains S/MIME Email Signing, and it first shipped in 2025. Key capabilities include S/MIME signing, email encryption, and PHPMailer integration.

Summary written by a language model from the project’s public pages.

S/MIME signing
Email encryption
PHPMailer integration
Certificate management
WordPress integration

Built with & integrations

Runs on

Browser

Trust & compliance

License

Open Source

Verified signals

HTTPSPrivacy PolicyOpen SourceFree tier

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed16 Jun · 00:04 UTC
Listing verified against its public source
Source: PulseGate · Open

Frequently asked questions about S/MIME Email Signing

What does S/MIME Email Signing do?: S/MIME Email Signing focuses on enabling secure email signing for WordPress sites using S/MIME certificates. It is catalogued under Email & inbox on PulseGate.
Who is S/MIME Email Signing for?: S/MIME Email Signing is an open-source project built for wordPress administrators.
Is S/MIME Email Signing free?: Yes — S/MIME Email Signing is open source under the Open Source license and free to use.
What platforms does S/MIME Email Signing run on?: S/MIME Email Signing runs on the web.
Is S/MIME Email Signing still active?: Unverified. S/MIME Email Signing has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
Who makes S/MIME Email Signing?: S/MIME Email Signing is developed by Liups233.
When did S/MIME Email Signing launch?: S/MIME Email Signing first shipped in 2025.
Is S/MIME Email Signing open source?: Yes — S/MIME Email Signing is open source under the Open Source license.

At a glance

Pricing: Open Source
Platforms: Web
Languages: English
License: Open Source
Built for: WordPress administrators
Model: Open source
Solves: Enabling secure email signing for WordPress sites using S/MIME certificates.

Registered as

WordPress.org: smime-email-signing

Developer

Liups233

Index record

Identity confidence: High · 95
Indexed: 16 Jun 2026
Lifecycle: Alive
Last seen: 16 Jun 2026

Identity audit (12)

Slug: s-mime-email-signing-wordpress-org
Lifecycle last checked: 8 Aug 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 16 Jun 2026
Timeline basis: Indexed-at chronology. This listing's first-seen date was written by the catalog backfill, not observed here, so it is not treated as a sighting.
Name from: Derived from the project's own page and URL.
Category from: Assigned by the 2026 taxonomy migration.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Canonical URL: https://wordpress.org/plugins/smime-email-signing

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