Mailo vs Citadel Team
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mailo
This app provides a secure, all-in-one platform for email, calendar, contacts, and cloud storage, prioritizing user privacy and data confidentiality. It offers tailored accounts for individuals, families, and professionals, with a focus on ethical data handling and a reduced environmental footprint.
- Secure email service
- Synchronized address book
- Calendar management
- Cloud storage for documents and photos
- Photo sharing albums
- Real-time push notifications
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With the Mailo app, access a complete suite of services designed to protect your privacy and personal data: email, calendar, contacts, documents, photos, and much more, all in one app. • A comprehensive and secure email service • An address book synchronized with your device • A calendar to manage your schedule • Cloud storage for storing and sharing documents and photos • Photo albums to share with your loved ones Mailo meets everyone's needs: • Individuals: a free Mailo Free account or Mailo Premium starting at $1/month • Children: a free, 100% secure email address and a fun, ad-free interface • Families: an account for everyone, a shared domain name, a family website • Professionals, associations, schools, and town halls: Mailo Pro accounts with centralized administration and a personalized domain name Mailo, designed and hosted in Europe (France), is proud of its commitments and values: • Data confidentiality and security • A reduced environmental footprint • The defense of an open and sovereign Internet • Priority given to user needs The app puts all of Mailo in your pocket: • Quick and direct access to your inbox • All Mailo services in a single app • Real-time push notifications for new messages • Access to advanced features (read receipts, PGP encryption, etc.) • Synchronization of your address book with that of your phone or tablet Log in with a Mailo account or create your email address for free in just a few seconds. For more information: https://www.mailo.com https://www.mailo.com/mailo/en/mailo.php
Citadel Team
This app offers a secure platform for team collaboration, enabling audio/video conferences, messaging, group creation, and file sharing. It prioritizes confidentiality with end-to-end encryption and adheres to strict privacy laws. Enjoy synchronized multi-device access and controlled contact invitations.
- Audio and video conferences
- Instant messaging and direct chats
- File sharing (documents, photos)
- Secure phone service
- Group creation
- Multi-device synchronization
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With Citadel Team, organize audio and video conferences, start calls, send messages, create groups with all your colleagues, share all kind of documents, videos and high-quality photos with complete confidentiality. Your communications are protected by advanced encryption technologies, including end-to-end encryption. This means that no one but you and your correspondent can listen to or read your exchanges. The Citadel Team service is hosted in France and applies strict French and European laws that protect your privacy. - More comfortable conversations: group instant messaging or direct chats, file sharing, Secure phone service, audio and video conferences - Keep your data under control: invite your contacts without your phonebook being stolen - Multi-devices automatic sync: Your mobile devices and computer are always synchronised And that's just the beginning: We have many other improvements coming to help you be more efficient at work every day!
Screenshots
Verdict
The clearest difference is rating: Mailo at 4.0 against Citadel Team's 2.6. Mailo also leads on iOS requirement (11.0 vs 13.0). Citadel Team's advantage is ads (none vs shown) and review sentiment (51% vs 29%). On price, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Mailo holds the better App Store score, 4.0 against 2.6. That said, the two scores are not equally well evidenced: Citadel Team has 10 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 29% of Mailo's written reviews are positive against 51% of Citadel Team's, so the app with the better star average is not the one people write more warmly about.
Mailo ships an update every 7 months, Citadel Team every 2 months. The most recent releases landed on September 15, 2026 and September 18, 2026 respectively.
| Parameter | Mailo | Citadel Team |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) — better | 2.6 (10 ratings) |
| Positive reviews | 28.6% of reviews | 51.3% of reviews — better |
| Number of ratings | 1 | 10 — better |
| Update frequency | Every 7 months | Every 2 months — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 12 MB | 137 MB |
| Age rating | 4+ | 17+ |
| Developer | Mail Object | THALES SIX GTS FRANCE S.A.S |
Customer experience
Mailo
Citadel Team
In-app purchases
Mailo
No in-app purchases
Citadel Team
No in-app purchases








