Spark Mail

AI-assisted email client from Readdle with a Smart Inbox and team collaboration features

As of 1 September 2026, Spark Mail is free to use. A consumer and team email client that layers AI summaries, drafting and a Smart Inbox over your existing Gmail, Outlook or IMAP accounts. Softwr lists it under Productivity. Spark Mail is made by Readdle, available on macOS, Windows, iOS, Android.

Visit siteVisit Spark Mail

Overview

What Spark Mail does

Spark Mail is made by Readdle, the Ukrainian company also behind PDF Expert and Scanner Pro, and it connects to existing Gmail, Outlook, iCloud and IMAP accounts rather than hosting mail itself. It adds a Smart Inbox that separates personal mail from notifications and newsletters, an AI Copilot for drafting and summarising threads, send-later and snooze, and shared team inboxes with internal comments on emails. The feature that distinguishes it, and that a buyer should weigh deliberately, is that several of its background features work by storing account credentials and syncing state on Readdle-operated servers rather than only on device. That is what makes cross-device snooze, send-later and push notifications work reliably, but it means Spark sits in the middle of your mail flow in a way a purely local IMAP client does not. Readdle has a long clean security record and is self-funded with no outside investors, but the architecture is a factual trade-off, not a rumour. Buyers are individuals and small teams who want AI triage and drafting without moving their mail hosting anywhere. The trade-off against a host like Fastmail or Proton Mail is that Spark adds a layer on top of accounts you still pay for elsewhere, and against local-only clients like Canary Mail it trades some control over where mail is processed for smoother multi-device sync.

What people use it for

A freelancer juggling Gmail and Outlook accounts who wants one AI-assisted inbox
A small support team sharing a single inbox with internal notes before replying
Someone who wants drafts and summaries generated without switching to a new mail host
A user who wants notification triage without writing their own filters

Where it falls short

Concrete and checkable, so you can decide whether any of them matter to you. This is the half of a review a vendor will not write about Spark Mail.

Several sync features route mail metadata and, for some features, credentials through Readdle servers, which is a materially different trust model from a local-only IMAP client.
It is a client over accounts you still pay for elsewhere, so the total cost is Spark plus whatever Gmail, Outlook or Fastmail plan you already hold.
The free tier lacks AI Copilot and summaries, so the features it is best known for sit behind the paid plan.
Team features are basic next to dedicated shared-inbox tools like Front or Help Scout, so a support team scaling past a few agents will likely outgrow it.
Windows and Android versions have historically lagged the macOS and iOS apps in feature parity.

Cross-shopped

What people choose instead of Spark Mail

Each pairing was judged by two reviewers asking whether a buyer would genuinely weigh the two against each other. The ones that failed were deleted rather than published.

Spark Mailvs
Canary Mail
Canary Mail: If you want AI features with a more security-focused positioning and a lifetime purchase option
Spark Mailvs
Bluemail
Bluemail: If you want a free client with unified accounts and do not need AI drafting
Spark Mailvs
Fastmail
Fastmail: If you want to change where your mail is actually hosted rather than add a client on top of it

Pricing

What Spark Mail costs

Taken from the vendor's own pricing page. Prices move, so check before you buy.

Basic

Free

Unlimited accounts
Smart Inbox
Basic send later

Premium

$7.99 /mo

AI Copilot and summaries
Unlimited snooze and send later
Priority support

Premium Teams

$10 /mo

Shared inboxes
Delegation and internal comments
Admin controls

Capabilities

Features

Smart Inbox
Automatic separation of personal mail, notifications and newsletters
AI Copilot
Drafts, replies and tone adjustment generated from thread context
AI Summaries
Condenses long threads into a few lines
Team collaboration
Shared inboxes with internal comments and delegated replies
Send later and snooze
Scheduling that syncs across devices via Spark servers
Multi-account unified inbox
Gmail, Outlook, iCloud and IMAP accounts in one view

Answered, with sources

Questions people ask

Each answer names the page it came from, so you can check it rather than take our word for it.

Does Spark host my email?

No. It is a client that connects to Gmail, Outlook, iCloud or any IMAP account; you still need a mail host.

Does Spark store my email credentials on its servers?

For some features, including cross-device snooze and send-later sync, yes. It is part of how those features stay consistent across devices.

Is there a one-time purchase option?

No, Spark is subscription only for individuals and teams; the base client is free but AI and unlimited scheduling need Premium.

Keep looking

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Softwr does not host reviews and shows no star rating for Spark Mail, because a rating we did not collect is not ours to publish. What is here is the pricing and platform detail from the vendor’s own pages, limitations we could state concretely, and alternatives a reviewer confirmed people weigh against it. Tell us if any of it is wrong.

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