Write & communicate

Improve my writing

3 apps in this collection help you improve my writing: Canary Mail, Shortwave and Spark Mail. All of them list iOS and Android as platforms, according to their developers.

Compare the options

Improve my writing: agent level, hands-on test, platforms, pricing and last check for each app
AppAgent · hands-on testPlatformsPricingChecked
Canary MailAssistant: answers and suggestsDeveloper states · Not yet tested by usiOSAndroidDesktopFreemiumNov 4, 2026
ShortwaveActs on your behalfDeveloper states · Not yet tested by usiOSAndroidDesktopWebPricing not yet verifiedNov 4, 2026
Spark MailActs on your behalfDeveloper states · Not yet tested by usiOSAndroidDesktopFreemiumNov 4, 2026

Unless a label says otherwise, facts are what each developer states, checked on the date shown. Languages, limits and sources are on each app’s page.

What we haven’t verified

  • Pricing not yet verified for Shortwave.
  • Canary Mail, Shortwave and Spark Mail are not yet tested by us; their facts are what the developer states.

Notes on each app

Canary Mail

Multi-account email app with an AI Copilot that drafts replies, adjusts tone, summarizes threads and answers questions about your mail.

Keep in mind: AI Copilot requires a paid plan (Growth or higher) Developer states

Shortwave

AI email client with a conversational assistant that organizes your inbox, writes and improves emails, answers questions and sends calendar invites.

Keep in mind: AI usage, search history and AI filters are limited by plan quota Developer states

Spark Mail

Email app with an AI Assistant that finds and summarizes mail, drafts and sends replies, cleans up the inbox and schedules meetings.

Keep in mind: AI features use a monthly quota; free users get only a limited preview Developer states

Apps are listed in alphabetical order; order is not a ranking. Facts come from each app’s sources, shown on its profile. How we check apps.

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