Best Fastmail alternatives: apps like Fastmail – Email &amp; Calendar

Whether you want more options like Fastmail or a completely different take on the same concept, our curated list of 10+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.

KobCard by KOB MARKETING

Gift Card Information Platform

4.1(395 ratings)

Free

KobCard is a comprehensive gift card information platform that offers real-time exchange rates, price calculations, and the latest news on gift cards. It serves as a one-stop destination for individuals looking to buy, sell, or stay informed about the world of gift cards.

Top Alternatives to Fastmail

HEY Email by 37signals LLC

Email at its best, by Basecamp

Editor's Choice

4.6😊(4.3K ratings)

Free

This app revolutionizes email management with built-in workflows and organization features. It allows users to screen senders, group messages naturally, and access attachments easily. Prioritizing privacy, it blocks email trackers and offers customizable notifications.

What We Love

🚀 Streamlined email workflow
🔒 Strong privacy focus
👍 Intuitive and user-friendly design
💡 Innovative email organization features
🚀 Fast and responsive app
👍 Enjoyable email experience

Room to Improve

🐛 Occasional bugs and glitches
🔋 Concerns about offline functionality
💰 Expensive subscription cost
🔍 Limited search and navigation capabilities

Tuta Mail: Secure Email by Tutao GmbH

Encrypted Private Inbox

Strong Contender

4.7😐(3.9K ratings)

FreeIn-App Purchases

This secure email service offers end-to-end encryption for your messages and contacts, ensuring your privacy. It provides a user-friendly interface, offline access, and a free encrypted calendar, all developed and hosted in Germany.

What We Love

🔒 Secure email service
💡 Encrypted subject lines and contacts
👍 Clean and simple interface
🚀 Reliable and fast
🔒 End-to-end encryption
💰 Affordable paid plans

Room to Improve

🐛 Occasional app crashes
🐛 Inconsistent email delivery
🐛 Unreliable search functionality
🐛 Inability to export emails
🐛 Frequent app disconnections
🐛 Small font size issues

Canary Mail – AI Email by Cartasec Pte. Ltd.

Read Receipts, Unified Inbox

Worth Considering

Encrypted Email - Mailfence

4.5😐(8.8K ratings)

FreeIn-App Purchases

Manage all your email accounts in one unified inbox. Utilize AI to draft, reply, and summarize messages, track read receipts, and organize your communications with smart sorting and cleaning tools.

What We Love

👍 Clean and intuitive interface
🚀 Fast email processing
🔒 Robust security and encryption features
💡 Useful AI-powered features (e.g. email summarization)
👍 Seamless cross-device syncing

Room to Improve

🐛 Inconsistent performance and reliability issues
🐛 Bugs with email deletion, drafts, and notifications
🔋 High battery consumption
👎 Confusing pricing model and paywall for core features
👎 Lack of basic customization options (e.g. signature, font size)

More apps like Fastmail

Secure & private mail suite

OpenPGP encrypted emailsPassword-protected emailsIntegrated cloud storage (Drive)

This app provides a secure and private email service with integrated cloud storage, calendar, and contacts. It offers end-to-end encryption and password-protected emails for enhanced privacy. Ideal for individuals and businesses seeking a secure communication and collaboration platform.

(117)

freemium

Airmail for Gmail Outlook Mail

Your Mail With You

Support for multiple email accounts (Gmail, Outlook, IMAP, POP3)Customizable swipes and interactive push notificationsSnooze and bulk editing of messages

This powerful mail client offers a streamlined inbox experience with extensive customization options. It supports multiple email accounts and integrates seamlessly with other apps and services for enhanced productivity. Enjoy features like snoozing, interactive notifications, and iCloud sync for a unified workflow across devices.

free with in-app purchases

(4.7K)

Email Client - Boomerang Mail

Gmail, Outlook E-mail Triage

One-tap calendar schedulingRead receipts and trackingEmail scheduling for later

Manage multiple email accounts efficiently with features like one-tap calendar scheduling, read receipts, and email scheduling. Get AI-powered feedback for better writing and pause your inbox when needed. Supports Gmail and Outlook.

free with in-app purchases

(4.7K)

eM Client

Secure e-mail app

Unified inbox for emails, calendars, tasks, contacts, and notesAI-powered email drafting and reply assistancePGP and S/MIME encryption for secure communication

Manage emails, calendars, tasks, contacts, and notes efficiently in one application. Features AI assistance for drafting and replying, robust security with PGP and S/MIME encryption, and instant message translation. Offers advanced privacy options and seamless integration with cloud storage and online meetings.

(51)

free

Chuck – Email with Superpowers

Email Management, Supercharged

On-device AI for private email analysisBatch delete, archive, and unsubscribeUnified inbox for multiple accounts

This app helps you declutter your inbox by quickly processing thousands of emails. It uses on-device AI to intelligently group and suggest emails for deletion, archiving, or unsubscribing, all while keeping your data private. It functions as a full email client, allowing you to read, reply, and compose messages across all your connected accounts.

free with in-app purchases

(15K)

AI-native email for business

Shortwave - AI Email

AI-powered email writing and draftingIntelligent inbox organization and clutter removalReal-time team collaboration and email sharing

This AI-powered email client streamlines your inbox with intelligent assistance for writing, organizing, and scheduling. It offers real-time team collaboration, advanced search, and customizable workflows to boost productivity.

(757)

free

HEY Calendar

Make your day

Day and week-based viewHabits and highlights trackingFlexible 'Sometime this week' scheduling

This calendar app organizes your schedule around days and weeks, reflecting how you naturally think. It offers features like habits, highlights, and flexible scheduling for tasks that don't have a precise time. Enjoy a full-featured calendar with unique twists designed to make managing your day easier.

(662)

free