Spike
Spike: A flexible email workspace for people and teams that want more than a traditional inbox. Ranked #18 of 142 in Email Clients by our editors (7.6/10); pricing: Free plan; best for conversational email and team collaboration.
At a glance
- Editor score7.6 / 10
- PricingFree plan
- Best forConversational email and team collaboration
- Free planYes
- Paid from$4/user/mo
- App coverageAll
- Facts checked21 Sep 2026
Where it wins
- Unified inbox supports Gmail, Outlook, Yahoo, iCloud, Hotmail, and IMAP
- AI summaries, generation, scheduled sending, and priority sorting
- Calendar, tasks, notes, calls, and shared inboxes in one app
Where it doesn't
- Free supports one email address, 60 days of search, and 1 GB storage
- Pro supports unified inboxes for up to three email addresses
- Unlimited email addresses require the $12 Ultimate plan
Our verdict on Spike
Spike is an email client for individuals, professionals, and teams that want email and collaboration features in one workspace. It turns traditional email threads into chat-like conversations and connects Gmail, Outlook, Yahoo, iCloud, Hotmail, and IMAP accounts. The app is available on the web, Windows, macOS, iOS, and Android, with features including unified inboxes, priority sorting, scheduled sending, AI assistance, calendars, notes, tasks, voice messages, and audio or video calls.
The published plans make the account and storage limits central to the buying decision. Free includes a Smart Inbox for one email address, 60 days of search history, 1 GB of storage, and AI features. Pro costs $6 per user per month when billed annually and adds a Unified Inbox for up to three email addresses, unlimited search history, 5 GB of storage, and priority support. Ultimate costs $12 per user per month when billed annually and adds unlimited email addresses, 20 GB of storage, and VIP support. The paid tiers are therefore most relevant to people managing multiple accounts or needing more search and storage capacity.
Spike's broader appeal comes from combining email with calendar synchronization, in-inbox calendar tools, Super Search across emails, files, and conversations, collaborative notes and tasks, and shared inboxes for teams. Google Calendar and Apple Calendar are supported alongside the listed email services. Choose Spike if conversational email, AI tools, and team workflows matter more than a conventional mail interface. Users who only need a basic single-account inbox may find the Free plan sufficient, while those needing more than three accounts must move to Ultimate.
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Spike pricing
All 6 Spike plans and prices →
Spike fact sheet
| Free plan | Yes |
|---|---|
| Paid from | $4/user/mo |
| App coverage | All |
| Account limit | 3 accounts |
| Unified inbox | Yes |
| Offline access | Not verified |
| Scheduled sending | Yes |
| Calendar tools | Yes |
| Deployment | Cloud, Desktop, Mobile |
| Platforms | Web, Windows, macOS, iOS, Android |
| Support | Email, Live chat, Docs |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 12 integrations: Gmail, Outlook, iCloud, Yahoo, IMAP, Google Calendar … |
| Pricing | Free plan (source) |
| Website | spikenow.com |
| Facts checked | 21 Sep 2026 |
Spike integrations
Spike lists 12 integrations on its own site.
- Gmail
- Outlook
- iCloud
- Yahoo
- IMAP
- Google Calendar
- Outlook Calendar
- Apple Calendar
- Google Drive
- Dropbox
- OneDrive
Alternatives to Spike
- Mozilla ThunderbirdA capable free client for multi-account email, offline access, and desktop productivity tools.9.4
- Zoho MailA flexible hosted email service with free access, migration tools, and Zoho collaboration options.9.2
- Apple MailA capable Apple-focused email client with unified inboxes, scheduling, privacy controls, and AI assistance.9.1
Also Ranked In
Spike is ranked in 5 of our directories.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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