Spark +AI

Overview

Spark +AI is Spark’s email assistant for people who want search, writing help and inbox tasks in the same app. It is strongest for users juggling several email services and workplace tools; its monthly AI quota and the retention of query-related emails make it less suited to sensitive work without a careful privacy review.

Spark comes from Readdle, a privately held productivity software company, and dates to 2007. AI Assistant works with Gmail and Google Workspace, Outlook and Office 365 (including Exchange Online), iCloud, Yahoo and standard IMAP accounts, so it can serve as an assistant across a mixed set of accounts rather than only one provider.

For a broader comparison of this category, see our AI Email Assistants list.

Key features

Search and follow-up

AI Assistant searches emails, attachments, calendar information and meeting notes for relevant details. It can summarize threads and help with follow-up actions, which makes it useful when the answer is buried across messages and meeting records. Attachment search is limited to PDF and TXT files.

Writing and inbox actions

The assistant can draft and rephrase messages, proofread grammar and clarity, and translate email. It can also check colleagues’ availability, schedule meetings, draft and send emails, and organize the inbox. These capabilities suit people who want help moving from finding information to preparing a response or arranging a meeting. Automatic sending is not a capability; sending remains a distinct action the assistant can draft for.

Integrations and AI limits

Spark lists integrations with Notion, Asana, Slack, Todoist, Zoom, Microsoft Teams and HubSpot. Salesforce and Pipedrive support is described as coming soon, so teams depending on either should not treat it as current support. AI features draw on a monthly Spark +AI quota, and Meeting Notes have separate plan limits: five lifetime notes on Free, 40 per month on Plus, and unlimited notes on Pro and Enterprise. The free allowance is a small sample, not an ongoing meeting-notes workflow.

Privacy and control

Spark says email and request history are processed locally, with only a few emails related to a query sent to its AI provider. Provider copies may be retained for up to 30 days for abuse monitoring. Spark also says providers do not train models on user data, and AI features can be disabled in settings. That combination offers a stated limit on what is shared and a way to opt out, but the possible retention period may rule it out for readers with strict handling requirements.

Pricing

Spark uses a freemium model, with paid plans from $10/user/mo and a 7-day trial. The Free plan costs nothing and includes Smart Inbox, unlimited email accounts, Smart Notifications and Calendar. It is a practical way to use Spark’s core mail features, but it does not provide a recurring Meeting Notes allowance: Free includes five notes for the lifetime of the plan, and AI use is subject to Spark +AI quota.

Plus costs $10 a month, billed $10 / month per user or $120 / year. It adds Spark +AI, AI Assistant, 40 AI Meeting Notes per month and Essential Team Collaboration. Spark describes it for individuals and small teams. It is the entry point for regular AI use, though the monthly quota still matters and the Meeting Notes allowance is not unlimited.

Pro costs $20 a month, billed $20 / month per user or $240 / year. It includes everything in Plus, unlimited AI Meeting Notes, Advanced Team Collaboration and HubSpot integration. Professionals and client-facing teams who need those expanded collaboration features or frequent meeting notes have a clearer case for Pro; others may not need the doubled per-user price.

Enterprise has custom pricing. It includes everything in Pro, Security & Controls, a Dedicated Success Manager and 1:1 Productivity Coaching. Spark positions it for larger teams needing advanced security and support, so the custom quote is most relevant when those services justify moving beyond a per-user plan.

Platforms

Spark is available on Windows, macOS, iOS and Android. The range covers desktop and mobile use, but does not include a web platform.

Who it's for

Spark +AI is a good fit for individuals and teams that work across supported mail providers and want search, drafting, scheduling and inbox organization together. Plus is the sensible starting point for individuals and small teams; Pro better fits professionals and client-facing teams that need unlimited Meeting Notes or advanced collaboration. Larger teams needing security controls and dedicated support can consider Enterprise. It is a weaker choice for anyone requiring unlimited AI use on a low-cost plan, attachment formats beyond PDF and TXT, or a guarantee that query-related emails are never retained by an AI provider.

Pros and cons

Broad email coverage: Support for major services and standard IMAP makes it useful across multiple accounts.

Connected email work: Search, writing, scheduling and inbox actions cover more than message drafting alone.

Useful plan progression: Meeting Notes rise from five lifetime notes on Free to 40 monthly on Plus and unlimited on Pro.

Meaningful privacy controls: Spark says providers do not train on user data and lets users disable AI, but query-related emails may be retained for up to 30 days.

Quota and file constraints: AI use has a monthly quota, and attachment support is limited to PDF and TXT.

Per-user costs scale: Plus and Pro are priced per user, which can make them less attractive for teams that do not need their collaboration or meeting-note benefits.

Alternatives

Choose Mailbutler Smart Assistant if its free Starter plan and wider platform range, including web, Linux and browser extension, better match your setup; its Starter emails include a visible Mailbutler marker.

Perplexity is a freemium alternative with limited daily use on its Free plan and a $20 a month Pro plan for individuals who need expanded use; it is not presented here as an email-specific assistant.

Consider Superhuman Go if its free plan’s inline suggestions, chat with tabs and apps, editable shareable docs and synced conversations better suit your workflow.

Serif may suit readers looking for email triaging and drafting alongside a meeting recorder, task manager and knowledge base; its Lite plan costs $30 a month.

Spike offers a free Starter plan for up to three members, with one teamspace, 60 days of search history and 15 GB storage per member; consider it if those team limits fit your needs.

Fyxer is an option for readers seeking an inbox-and-calendar plan: its Starter plan costs $22.50 a month when billed annually for one inbox and one calendar.

Shortwave may be a better fit if its Business plan’s AI search history, thread limits and AI-powered filters align with your email workflow; the plan costs $30 a month per seat.

Drag is worth considering for teams that want shared Gmail inboxes with Kanban, list and preview board views; its Starter plan costs $16 a month.

Verdict

Choose Spark +AI if you want one assistant for searching across supported email and meeting information, composing messages and handling related inbox tasks, with desktop and mobile apps. The main reason to look elsewhere is its monthly AI quota and the possibility that query-related emails remain with the provider for up to 30 days—especially if your work demands stricter data handling or predictable, unlimited AI use.