Inbox Zero vs Spike
Inbox Zero
inbox-zero.ai
Spike
spikenow.comSide by side
| Figure | Inbox Zero | Spike |
|---|---|---|
| Price from | $20/mo | $4/mo |
| Free plan | — | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| API | Yes | — |
| Self-hosted | Yes | — |
| Plans published | 4 | 12 |
| Spec score · AI Email Assistants | 8.4 (#8) | 8.3 (#12) |
| Audience | The product is built for founders, operators, and professionals who receive more email than they can handle manually. | Spike says its Email App suits people upgrading an existing email experience or managing multiple accounts, while Teamspace is for creating a new address and collaborating with a team. |
| Email providers | It supports Gmail, Google Workspace, and Microsoft Outlook email accounts. | Spike says it works with existing email accounts including Gmail, Office 365 or Outlook, Exchange, iCloud, Yahoo, and other IMAP accounts. |
| Security | The hosted product is SOC 2 compliant, and the Trust Center identifies SOC 2 Type 2 compliance. | Spike says message data is encrypted with AES-256 using a per-message private key and that it has periodic external security audits. |
| Support | Customers can contact support at [email protected]. | The pricing page lists standard support for Starter, priority support for Team and Pro, and VIP support for Business and Ultimate. |
Plans
Inbox Zero
- Starter$20 a month
- Plus$35 a month
- Professional$50 a month
- EnterprisePriced on request
Spike
- StarterFree
- Team$4 a month
- Business$8 a month
- FreeFree
- Pro$6 a month
- Ultimate$12 a month
- Email App FreeFree
- Teamspace StarterFree
- Teamspace Team$4 a month
- Email App Pro$6 a month
In their own words
Inbox Zero
Inbox Zero has no write-up on Specifiction yet; its figures are above.
Spike
Spike combines email, calls, notes, tasks, and to-dos in a single hub, and presents email threads as chat-like conversations. It has a unified inbox, scheduled sending, and calendar tools, and runs on Android, iOS, macOS, web, and Windows. Spike AI can draft messages and replies, summarize conversations, and provide an assistant; free tiers list 10 queries for several AI features. Teamspace adds channels, shared inboxes, groups, collaborative documents and tasks, and audio and video meetings. Spike works with existing accounts such as Gmail, Office 365 or Outlook, Exchange, iCloud, Yahoo, and other IMAP accounts. Cloud attachments can use Google Drive, Dropbox, or OneDrive, and calendars can connect with Google Calendar, Outlook, and Apple Calendar. Spike says it encrypts messages with AES-256 using a per-message private key, and undergoes periodic external security audits. The Email App Free plan includes one address, 60 days of search history, 1 GB storage, and 30 MB file uploads. Email App Pro is $6 a month billed annually; Ultimate is $12 a month billed annually.