# SMIME Toolkit: S/MIME Setup — Sign & Encrypt mail quickly > Guides users through S/MIME email security setup on iOS devices. (iPhone/iPad app by Seth Farrington18896201822.) - Source: https://appshunter.io/ios/app/smime-toolkit-smime-setup/id6758324323 (this page in markdown: same URL + `.md`) - Developer: [Seth Farrington18896201822](https://appshunter.io/developer/1803242963) - Category: Utilities, Productivity - Price: $2.99 - Rating: 5.00/5 from 2 App Store ratings · 4 written reviews indexed - Age rating: 4+ - Requires: iOS 16.0 · 3 MB - Languages: British English, Arabic, Czech, French (France), German (Germany), Hindi, Italian, Japanese, Korean, Brazilian Portuguese and 6 more - Released: 2026-01-27 - Data updated: 2026-09-06 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/smime-toolkit-smime-setup/id6758324323/reviews.md ## What is SMIME Toolkit? SMIME Toolkit: S/MIME Setup - Secure Email Certificates SMIME Toolkit guides you through S/MIME setup on iPhone and iPad in clear steps. Generate keys on-device, request certificates from your organization or SMIME Toolkit's backend, and export identities for manual installation in iOS Settings. Sign and encrypt email in Apple Mail while keeping your private keys under your control. WHAT THIS APP DOES SMIME Toolkit guides you through the full S/MIME enrollment process: - Generates cryptographic keys securely on your device (RSA-2048 default, optional ECC P-384) - Builds standards-compliant certificate signing requests (CSRs) - Requests signed certificates from your organization's secure backend - Exports PKCS#12 (.p12) identities for manual installation in iOS Settings - Optionally generates both RSA and ECC identities for compatibility targets The app never configures Mail automatically and never accesses your email content. KEY FEATURES - On-device key generation (Keychain-backed) - Standards-compliant CSR with email address (subjectAltName) - Secure HTTPS requests to your organization's issuer - PKCS#12 (.p12) export with a password you choose - Face ID / Touch ID for sensitive actions - Manual install flow (required by iOS) - CA certificate export and optional trust profile for easier setup - Optional ECC P-384 support and dual-identity export flow HOW IT WORKS - Enter your email address - Generate a key pair and CSR on your device - Request a certificate from your signing service - Export your identity (.p12) or trust profile - Install manually in Settings > Mail > Accounts > Advanced Once installed, enable S/MIME signing and encryption in Apple Mail. PRIVACY & SECURITY - Your private key never leaves your device - Only your CSR and email address are sent for certificate issuance - No access to Mail, messages, or accounts - No ads or tracking IMPORTANT NOTES - This app cannot configure Apple Mail automatically - Manual installation is required by iOS - Certificate issuance depends on your organization's backend - Private CAs must be trusted in Certificate Trust Settings FOR TEAMS & ENTERPRISES SMIME Toolkit is designed for organizations that want a simple, user-driven S/MIME enrollment flow: - Works with internal CAs and private trust roots - Predictable, auditable issuance workflows - Pluggable backend interface for partner CA integrations - Enterprise bulk generation supports RSA default, ECC opt-in, or both TROUBLESHOOTING - Ensure your network can reach the signing service - Certificate chain errors usually indicate issuer misconfiguration - If Mail doesn't show encryption, confirm CA trust and recipient certificates COMPATIBILITY - Works with Apple Mail on iOS after manual installation - Compatible with clients that support PKCS#12 identities once installed SMIME Toolkit is a certificate utility. It does not provide email hosting, account management, or message delivery. Apple Mail remains controlled by iOS settings and your email provider. ## Key features - On-device key generation - Standards-compliant CSR creation - Secure certificate requests - PKCS#12 (.p12) identity export - Face ID/Touch ID protection - Manual installation guidance ## Chart rankings - #188 in Top Paid · Utilities (US App Store) ## Recent user reviews (4 of 4) All indexed reviews: https://appshunter.io/ios/app/smime-toolkit-smime-setup/id6758324323/reviews.md ### 5/5 — Secure S/MIME Setup Made Simple on iPhone *2026-05-07* SMIME Toolkit made S/MIME email setup on iPhone fast and hassle-free. The app is intuitive, privacy-focused, and excellent for generating encryption keys and certificate signing requests (CSR). A must-have for anyone who wants secure, encrypted email and digital signing on iOS! ★★★★★ **Developer response:** Thank you. Very much appreciate your review. If you need anything let us know. ### 5/5 — Great solution *2026-04-09* Normally you have to pay a CA a yearly subscription to get your email encrypted. With this app you can sign and encrypt your mail (with any provider or app) for the cost of buying the app. That’s crazy! Highly recommend you buy this app. ### 5/5 — Finally an easy solution *2026-02-14* Unlimited certificates for email encryption for less than the cost of one certificate? No brainer. ### 5/5 — Funktioniert einwandfrei *2026-02-06* Nach kurzer Rücksprache mit dem Support (sehr schnelle und nette Rückmeldung) hat es mit dem Export gut funktioniert.👍🏼 **Developer response:** Das freut mich sehr zu hören! 😊 Vielen Dank fürs Teilen deiner Erfahrung – besonders schön, dass der Support so schnell und hilfreich war. Falls du noch weitere Fragen hast oder etwas unklar ist, melde dich jederzeit gern! ## Frequently asked questions about SMIME Toolkit ### How do I set up SMIME Toolkit? SMIME Toolkit guides you through the S/MIME setup process step-by-step. You'll enter your email, generate a key pair and CSR on your device, request a certificate from your signing service, and then export your identity (.p12) for manual installation in your iOS Settings. ### Does SMIME Toolkit configure Apple Mail automatically? No, SMIME Toolkit does not configure Apple Mail automatically. iOS requires manual installation of S/MIME identities. Once installed, you can enable signing and encryption within Apple Mail's settings. ### Is my private key safe with SMIME Toolkit? Yes, your private key is generated and stored securely on your device using Keychain. It never leaves your device, ensuring your sensitive information remains under your control. ### What devices does SMIME Toolkit support? SMIME Toolkit is compatible with both iPhone and iPad devices running iOS. ### How often is SMIME Toolkit updated? The app was last updated on May 3, 2026, indicating recent development and support. Updates typically address compatibility, security, and feature enhancements. ### What is the price of SMIME Toolkit? SMIME Toolkit is a paid application priced at $2.99. This one-time purchase grants you access to its full suite of S/MIME setup features. ### Does SMIME Toolkit have ads? No, SMIME Toolkit is ad-free. The app is designed to provide a clean and uninterrupted user experience focused solely on S/MIME setup. ### What age rating is SMIME Toolkit? SMIME Toolkit has an age rating of 4+. This indicates it is suitable for users of all ages and does not contain mature or inappropriate content. ## Version history (last 5 releases) ### 1.16 — 2026-05-03 Added optional ECC P-384 (secp384r1) support while keeping RSA-2048 as the default for compatibility. Added a "generate both" option to create RSA + ECC identities together when needed. Improved trust profile/export flows for dual-identity setups. Fixed share/export reliability issues and improved overall setup guidance. ### 1.15 — 2026-04-09 Lokalisierung der App auf Englisch (USA), Englisch (Großbritannien), Französisch, Deutsch, Japanisch, Italienisch, Spanisch (Mexiko) und Spanisch (Spanien) hinzugefügt. ### 1.14 — 2026-04-02 Improved app-to-server connectivity for a more reliable certificate setup and signing experience. This update focuses on backend communication and overall stability to keep things running smoothly. ### 1.13 — 2026-02-03 What’s New: - Improved App Attest reliability and recovery - Clearer error messages during certificate issuance - Minor UI copy fixes and stability improvements ### 1.12 — 2026-01-31 • Introduced a new designated backend at www.smimetoolkit.com for certificate issuance • Added Apple App Attest–based authentication to improve security and prevent abuse • Consolidated marketing, privacy policy, and support pages under a single domain • Improved certificate issuance reliability with per-user rate limits (up to 10 requests per minute, no lifetime cap) ## More apps by Seth Farrington18896201822 - [EXIFer Pro: GPS Timestamp EXIF](https://appshunter.io/ios/app/exifer-pro-gps-timestamp-exif/id6756196293) - [B4U Post](https://appshunter.io/ios/app/b4u-post/id6758669603) - [AEStego](https://appshunter.io/ios/app/aestego/id6759262567) - [Optimized Route](https://appshunter.io/ios/app/optimized-route/id6759760714) - [Untethered LLM](https://appshunter.io/ios/app/untethered-llm/id6760574420) All apps by Seth Farrington18896201822: https://appshunter.io/developer/1803242963 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-06.*