ISEC7 MAIL vs Marco
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ISEC7 MAIL
Securely access and manage Microsoft Exchange and Office 365 email, contacts, and calendars from your mobile device. Offers features like mailbox delegation, public folder integration, and S/MIME encryption for sensitive information.
- Secure access to Exchange/Office 365
- Contact, calendar, task, and note management
- Mailbox delegation
- Public folder integration
- Certificate-based authentication
- S/MIME encrypted and signed emails
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ISEC7 MAIL enables access to Microsoft Exchange and Office 365 environments with secure Personal Information Management (PIM) data such as contacts, calendar, tasks, and notes. ISEC7 MAIL also allows for mailbox delegation capabilities and public folder integration. ISEC7 MAIL operates with modern and certificate-based authentication (CBA) and allows users to securely send, receive, and enforce encrypted and signed emails (S/MIME). As the top priorities of ISEC7 MAIL are security, classification, and authentication, it is an ideal tool for managing classified or sensitive information, organizational or group mailboxes, and supporting executive leadership and their staff. Easiliy manage inboxes from your mobile device Easily managed from a mobile device, ISEC7 MAIL enables mobile access to Microsoft Exchange accounts with the ability to delegate access for approved staff. Delegation gives authorized users read and write access to email, calendar, public folders and more. No complex technical skills are required, simply add delegates from the Outlook client. With access to a delegated account, the user can book or change calendar appointments with ISEC7 Mail's Smart Scheduler, monitor and respond to emails, and access content in the public folders–directly from any mobile device. KEY BENEFITS • Easily access and delegate access to email, calendar, contacts, public folders, and more • Ability to use functional & shared mailboxes and multiple email domains • Utilize helpful classification tool ISEC7 CLASSIFY and automation of deployment • Share your business card with a touch of a button • Improve productivity and response time with significant impact on customer satisfaction • Maintain security of sensitive information and comply with security policies • Build greater team collaboration and transparency of knowledge share ISEC7 MAIL is free to download and use with limited features. Upgrading to Premium removes the restrictions of the free version mentioned below and is available through an auto-renewing subscription. A yearly subscription is available for $32.99. Free version: • Only one master account • Only one delegate access • Only 3 default folders for the master account (inbox, contacts, calendar) • Only 3 default folders for the delegate access (inbox, contacts, calendar) • No access to public folders • No action possible, such as create/forward/delete e-mails; create/delete appointments and contacts • Only the last 10 emails are displayed • In the calendar, only the current week is available Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. No cancellation of the current subscription is allowed during active subscription period. Technical Requirements • Microsoft Exchange Server 2007 SP1 or higher, 2010, 2013 or 2016 • Microsoft Office 365 • Microsoft Exchange WebService must be activated and available to connect to Privacy policy available at: https://apps.isec7.com/privacy/https://apps.isec7.com/privacy/ISEC7_DataPrivacyPolicy_ISEC7_MAIL.pdf End User License Agreement available at: https://apps.isec7.com/eula/ISEC7_EULA.pdf
Marco
Consolidate all your email accounts into a single, fast inbox. This privacy-focused application offers offline access, instant syncing, and a clean interface for managing multiple email providers on Apple devices.
- Unified inbox for all accounts
- Native Apple experience
- Offline email access
- Privacy-first design
- Instant speed
- Smart email views
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All your email accounts, one fast inbox. Marco is a fast, privacy-first email app that unifies Gmail, iCloud, Outlook, Yahoo, and IMAP accounts into one clean inbox. Works offline, syncs instantly, and runs natively on iPhone, iPad, and Mac. Key features: • Unified inbox for all accounts – Gmail, iCloud, Outlook, Yahoo, Exchange, and any IMAP provider in one place. • Native Apple experience – Built for iPhone, iPad, and Mac with full keyboard shortcuts and system integration. • Works offline – Read, search, and compose without a connection. Everything syncs when you're back online. • Privacy-first email – No tracking, no data selling, no ads. Your emails stay yours. • Instant speed – Opens, searches, and sends faster than default mail apps. • Smart email views – Filter by account, label, or sender. Zero inbox clutter. Tired of slow, bloated email clients? Marco is the lightweight, private alternative to Spark, Superhuman, and Apple Mail — with multi-account support, offline access, and no subscription required.
Screenshots
Verdict
The clearest difference is in-app purchases: Marco at none against ISEC7 MAIL's 1. Marco also leads on update cadence (every 4 days vs every 3 weeks) and review sentiment (13% vs 0%). On price, ads, device support and iOS requirement 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. ISEC7 MAIL sells 1 in-app purchase, starting at $32.99 per year. Marco asks for nothing beyond the download.
ISEC7 MAIL ships an update every 3 weeks, Marco every 4 days. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.
| Parameter | ISEC7 MAIL | Marco |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.7 (3 ratings) — better |
| Positive reviews | 0.0% of reviews | 12.5% of reviews — better |
| Number of ratings | — | 3 — better |
| Update frequency | Every 3 weeks | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 74 MB | 114 MB |
| Age rating | 4+ | 4+ |
| Developer | ISEC7 Group | Marco Technology Inc. |
Customer experience
ISEC7 MAIL
Marco
In-app purchases
ISEC7 MAIL
- Premium Subscription$32.991 Year
Marco
No in-app purchases









