Newton Mail vs Spike
Newton Mail
newtonhq.com
Spike
spikenow.comSide by side
| Figure | Newton Mail | Spike |
|---|---|---|
| Price from | $5/mo | $4/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | — | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| Plans published | 3 | 12 |
| Spec score · Email clients | 9.3 (#4) | 9.0 (#10) |
| Spec score · Email Productivity Apps | 8.8 (#5) | 8.4 (#11) |
| App coverage | all | all |
| Calendar tools | Yes | Yes |
| Account limit | 2 | 3 |
| Email providers | Supports Gmail, Google Workspace, Outlook, Microsoft 365, and IMAP providers. | Spike says it works with existing email accounts including Gmail, Office 365 or Outlook, Exchange, iCloud, Yahoo, and other IMAP accounts. |
| Free plan | Yes | Yes |
| Connected apps | Integrates with Todoist, Evernote, OneNote, Trello, Asana, Claude, and other AI apps. | Spike supports Google Drive, Dropbox, and OneDrive for cloud attachments, and its calendar feature names Google Calendar, Outlook, and Apple Calendar. |
| Supported platforms | Apps are available for Mac, Windows, iPhone, and Android. | Spike lists iOS, Android, Windows, macOS, and web browser as supported devices. |
| Scheduled sending | Yes | Yes |
| Paid from | 5 | 4 |
| Unified inbox | Provides one unified inbox across connected accounts. | Yes |
Plans
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
Newton Mail
Newton Mail is an email app for Mac, Windows, iPhone, and Android, with a unified inbox, offline access, scheduled sending, and calendar tools. It supports Gmail, Google Workspace, Outlook, Microsoft 365, and IMAP providers, and connects with apps including Todoist, Evernote, OneNote, Trello, Asana, Claude, and other AI apps. The free plan has no time limit and supports up to two Gmail, Outlook, or IMAP accounts, 15 read receipts per month, and 20 AI actions per day. Pro costs $5 a month with annual billing and includes unlimited email accounts, read receipts, and templates, plus 200 AI actions daily. Team costs $12 a month with annual billing and a two-seat minimum; workspaces include three shared inboxes. Teams can share threads, comment, reply on behalf of others, and view activity. Newton says credentials are encrypted with AES-256-GCM and that it does not see email passwords through OAuth sign-in. Attachments are limited to 25 MB. A 14-day free trial is available.
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.