Spark Mail

Where it fits

email

GmailOutlookiCloudSomething else

device

MacWindowsiPhoneAndroid

must-haves

AI replies and summariesShared team inbox

price

FreeUp to $10 a monthUp to $20 a month

Pricing

Free plan

Yes

Free trial

7 days

Paid from

$8.25/month per user billed yearly

Billed monthly

$10/month per user

From Readdle's pricing page, checked October 26, 2026. Prices change; the vendor's page has today's.

Features

Works on

Mac, Windows, iPhone, Android

Accounts

Gmail, Outlook, iCloud, Any IMAP

AI features

Yes

Shared inbox

Yes

Spark Mail alternatives

• MicrosoftMicrosoft OutlookMicrosoft's email and calendar app; free with ads, ad-free with a Microsoft 365 plan.Free plan · paid from $1.67/user/mo
• SuperhumanSuperhuman MailKeyboard-driven email app with AI drafting and team sharing for Gmail and Outlook.From $25/user/mo
• CartasecCanary MailEmail app with an AI Copilot, read receipts, PGP encryption and shared inboxes.Free plan · paid from $3/user/mo
• AppleMailBuilt into macOS, iOS and iPadOS: Apple's mail app, with Apple Intelligence summaries.Free
• MZLA Technologies (Mozilla)ThunderbirdFree, open-source desktop email client funded by donations, now also on Android.Free
• Proton AGProton MailEnd-to-end encrypted email from Switzerland-based Proton, with a free plan.Free plan · paid from $3.99/user/mo
• GoogleGmailGoogle's email service on web and mobile, with Gemini drafting and thread summaries.Free plan · paid from $7/user/mo
• MimestreamMimestreamNative macOS email client for Gmail, built on the Gmail API.From $4.17/user/mo