Pros
- Free plan supports unlimited email accounts
- Works with Gmail, Outlook, iCloud, Yahoo and any IMAP account
- Runs on Mac, Windows, iPhone, iPad and Android
- Smart Inbox, Gatekeeper and Priority keep noise out of the inbox
- Spark +AI writing, summaries and an AI Assistant on paid plans
- Shared threads, shared drafts and private comments for team collaboration
- One subscription unlocks paid features on every device
Cons
- AI runs on a monthly credit quota; heavy use can exhaust it
- Spark +AI is switched off by default and free users get only a limited preview
- Shared inboxes and read statuses require the $16.58 Pro plan
- Stores email credentials on Readdle's servers to power push and Send Later
- Read statuses rely on tracking pixels, so they can be inaccurate
- Autopilot rules and Auto-Drafts were still marked "coming soon" on the pricing page
Video
Key features
Groups mail into personal, notifications and newsletters automatically.
Read every connected account in a single inbox.
Approve or block first-time senders before they reach your inbox.
Pin important senders and threads to the top.
Defer email, schedule sends and get nudged if no one replies.
Draft, rephrase, proofread, translate and summarise emails with AI.
Find, summarise and act on emails, attachments, meeting notes and events.
Transcribe and summarise meetings (40/month on Plus, unlimited on Pro).
Write emails together in real time and comment privately.
Connect sales@ or support@ and work it as a team (Pro).
Desktop summary of new email to build better inbox habits.
Give AI agents read or triage access to your inbox.
Integrations
FAQs
Is Spark Mail free?
Yes. Spark Free includes the Smart Inbox, unlimited email accounts, smart notifications and calendar. AI is limited to a small preview, and the full Spark +AI starts with Plus at $8.25 per user per month billed annually.
What happened to Spark Premium?
Spark Premium closed to new sign-ups when Readdle launched Plus and Pro. Existing Premium subscribers keep their plan and price; new users choose between Free, Plus ($99/year) and Pro ($199/year).
Is Spark's AI unlimited on paid plans?
No. Every paid plan has a monthly Spark +AI credit quota. Meeting notes, drafts, summaries and Assistant requests all draw from it. You can buy a one-time add-on or wait for the monthly refill.
Does Spark have shared inboxes?
Yes, on the Pro plan. Pro lets you connect shared addresses like sales@ and work them as a team, alongside read statuses and unlimited AI meeting notes.
Is Spark Mail safe to use?
Spark encrypts data, runs on Google Cloud infrastructure and is GDPR compliant. It does store account credentials (OAuth tokens or encrypted passwords) on its servers to deliver push notifications and Send Later.
What users say
Free cross-platform email app with AI assistant and team inboxes
Who it's for
Juggles personal, client and project addresses across providers
- Unified inbox
- Free plan
- Any IMAP provider
- Heavy AI users
- Strict data-residency needs
Wants AI writing and summaries without Superhuman pricing
- Spark +AI
- AI Assistant
- Gatekeeper
- Shared support queues
3–10 people sharing sales@ or hello@
- Shared inboxes
- Shared drafts
- HubSpot
- Teams needing SLAs and ticket reporting
Industry fit
Security, data & support
Support
- Help center and self-serviceAll plansSelf-serve
- Email (support@sparkmailapp.com)All plansNot published
- Priority supportPlus and ProFaster than free (no SLA published)
- Dedicated success managerEnterprisePriority
API & languages
- LanguagesWebsite languages listed; confirm in-app UI languagesEnglish, German, Spanish, French, Italian, Japanese, Portuguese, Ukrainian, Chinese (Simplified)