# Mailspring vs Spike

| Attribute | Mailspring | Spike |
|---|---|---|
| **Vioscale score** | 66.3 (29% (low)) | 73.1 (25% (low)) |
| activity.commits_last_30d | 38 | - |
| adoption.github_stars | 17,762 | - |
| deployment.options | - | `{"cloud":true}` |
| description.long | A lightweight desktop application for Mac, Windows, and Linux that brings together multiple email accounts from different providers into one unified inbox. Core features run locally on your computer, with optional paid features for message tracking, scheduling, and productivity analytics. | A unified platform that consolidates email, team chat, shared documents, tasks, and video calling into a single collaborative interface with AI-powered features to boost productivity across all devices. |
| features.capabilities | `{"pricing_model":"freemium","deployment_model":"local_direct_imap_client","read_receipts_and_open_tracking":true,"snooze_and_scheduled_send_later":true,"unified_multi_account_inbox_view":true,"universal_imap_smtp_exchange_support":true}` | - |
| integrations.count | 7 | 1 |
| integrations.list | `[{"name":"Gmail"},{"name":"iCloud"},{"name":"Office 365"},{"name":"FastMail"},{"name":"Outlook.com"},{"name":"Yahoo!"},{"name":"IMAP"},{"name":"SMTP"}]` | `[{"name":"WhatsApp"}]` |
| language.primary | JavaScript | - |
| license.spdx | GPL-3.0 | - |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"hqCountry":"IL","primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"mac":true,"linux":true,"windows":true}` | `{"ios":true,"mac":true,"web":true,"android":true,"windows":true}` |
| pricing | `{"type":"freemium","plans":[{"free":true,"name":"Free","features":["Multi-account support","Unified inbox","Snooze","Send later","Mail rules","Templates","Grammar and spell checking","Translation support","Follow-up reminders"],"description":"Multi-account email client with unified inbox, local sync, and productivity features","contactSales":false},{"free":false,"name":"Pro","summary":"$8/month","features":["Read receipts","Link tracking","Unlimited snooze and send later","Mailbox analytics","Contact and company profiles"],"components":[{"kind":"fixed","amount":8,"period":"month","currency":"USD"}],"description":"Adds message tracking and unlimited scheduling features","contactSales":false}],"summary":"Free tier available; Pro at $8/month","currency":"USD","freeTier":true,"sourceUrl":"https://getmailspring.com","retrievedAt":"2026-08-21T12:46:43.649Z","startingPrice":{"amount":8,"period":"month","currency":"USD"},"billingPeriods":["month"]}` | `{"type":"subscription","plans":[{"free":true,"name":"Starter","summary":"Free up to 3 members","features":["1 teamspace","Free @spike.team email address","60 days search history","Spike AI (10 queries)","Standard support"],"minSeats":3,"description":"For small teams","contactSales":false,"includedLimits":{"members":"3"}},{"free":false,"name":"Team","summary":"$4/seat/month billed annually","features":["Unlimited Spike AI","Free custom domain (yearly)","Unlimited search history","Broadcast channels","Shared inbox","External collaboration","WhatsApp integration"],"commitment":"annual","components":[{"kind":"per_unit","unit":"seat","amount":4,"period":"month","currency":"USD"}],"description":"For growing teams","contactSales":false},{"free":false,"name":"Business","summary":"$8/seat/month (launching soon)","features":["SAML-SSO","500 MB file uploads","VIP support"],"components":[{"kind":"per_unit","unit":"seat","amount":8,"period":"month","currency":"USD"}],"description":"For advanced teams & businesses","contactSales":false},{"free":true,"name":"Smart Inbox","summary":"Free personal email","features":["1 email address","60 days search history","Unified calendar"],"minSeats":1,"description":"Personal email plan","contactSales":false,"includedLimits":{"storage":"1 GB","file_upload":"30 MB"}},{"free":false,"name":"Pro","summary":"$6/month","features":["Voice messages","1-click unsubscribe","Guest collaborators"],"minSeats":1,"components":[{"kind":"fixed","amount":6,"period":"month","currency":"USD"}],"description":"Advanced personal email","contactSales":false,"includedLimits":{"storage":"5 GB","file_upload":"100 MB"}},{"free":false,"name":"Ultimate","summary":"$12/month","features":["All Pro features","20 GB storage","1 GB file uploads"],"minSeats":1,"components":[{"kind":"fixed","amount":12,"period":"month","currency":"USD"}],"description":"Unlimited personal email","contactSales":false,"includedLimits":{"storage":"20 GB","file_upload":"1 GB"}}],"summary":"Free tier available for up to 3 members. Team plans start at $4/seat/month (annual). Personal plans from $6/month.","currency":"USD","freeTier":true,"sourceUrl":"https://www.spikenow.com/pricing/","retrievedAt":"2026-08-19T09:05:46.843Z","startingPrice":{"amount":6,"period":"month","currency":"USD"},"billingPeriods":["month","year"]}` |
| pricing.free_tier | yes | yes |
| pricing.model | commercial | freemium |
| pricing.price_level | low | low |
| pricing.starting_price | `{"amount":8,"currency":"USD"}` | `{"amount":6,"currency":"USD"}` |
| pricing.transparent | yes | yes |
| release.cadence_days | 15 | - |
| release.history | `[{"url":"https://github.com/Foundry376/Mailspring/releases/tag/1.23.0","date":"2026-07-22T03:45:22Z","type":"stable","version":"1.23.0"},{"url":"https://github.com/Foundry376/Mailspring/releases/tag/1.22.0","date":"2026-06-13T20:30:13Z","type":"stable","version":"1.22.0"},{"url":"https://github.com/Foundry376/Mailspring/releases/tag/1.21.1","date":"2026-05-20T20:31:26Z","type":"stable","version":"1.21.1"},{"url":"https://github.com/Foundry376/Mailspring/releases/tag/1.21.0","date":"2026-05-06T13:40:43Z","type":"stable","version":"1.21.0"},{"url":"https://github.com/Foundry376/Mailspring/releases/tag/1.20.1","date":"2026-04-20T16:07:46Z","type":"stable","version":"1.20.1"},{"url":"https://github.com/Foundry376/Mailspring/releases/tag/1.20.0","date":"2026-04-19T03:40:03Z","type":"stable","version":"1.20.0"},{"url":"https://github.com/Foundry376/Mailspring/releases/tag/1.19.1","date":"2026-04-07T01:34:03Z","type":"stable","version":"1.19.1"},{"url":"https://github.com/Foundry376/Mailspring/releases/tag/1.19.0","date":"2026-03-10T04:46:53Z","type":"stable","version":"1.19.0"},{"url":"https://github.com/Foundry376/Mailspring/releases/tag/1.18.0","date":"2026-02-23T14:40:58Z","type":"stable","version":"1.18.0"},{"url":"https://github.com/Foundry376/Mailspring/releases/tag/1.17.4","date":"2026-02-11T16:59:03Z","type":"stable","version":"1.17.4"},{"url":"https://github.com/Foundry376/Mailspring/releases/tag/1.17.3","date":"2026-01-31T20:21:11Z","type":"stable","version":"1.17.3"},{"url":"https://github.com/Foundry376/Mailspring/releases/tag/1.17.2","date":"2026-01-24T21:09:28Z","type":"stable","version":"1.17.2"},{"url":"https://github.com/Foundry376/Mailspring/releases/tag/1.17.1","date":"2026-01-15T20:55:25Z","type":"stable","version":"1.17.1"},{"url":"https://github.com/Foundry376/Mailspring/releases/tag/1.17.0","date":"2026-01-14T22:33:16Z","type":"stable","version":"1.17.0"},{"url":"https://github.com/Foundry376/Mailspring/releases/tag/1.16.0","date":"2025-07-16T14:29:44Z","type":"stable","version":"1.16.0"},{"url":"https://github.com/Foundry376/Mailspring/releases/tag/1.15.1","date":"2025-01-27T00:52:05Z","type":"stable","version":"1.15.1"},{"url":"https://github.com/Foundry376/Mailspring/releases/tag/1.15.0","date":"2025-01-02T15:25:00Z","type":"stable","version":"1.15.0"},{"url":"https://github.com/Foundry376/Mailspring/releases/tag/1.14.0","date":"2024-09-15T00:35:52Z","type":"stable","version":"1.14.0"},{"url":"https://github.com/Foundry376/Mailspring/releases/tag/1.13.3","date":"2024-01-08T19:59:00Z","type":"stable","version":"1.13.3"},{"url":"https://github.com/Foundry376/Mailspring/releases/tag/1.13.2","date":"2023-12-11T02:31:01Z","type":"stable","version":"1.13.2"}]` | - |
| security.disclosure_policy | - | yes |

## Capabilities (Email Clients)

| Capability | Mailspring | Spike |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Deployment model | Local direct imap client | - |
| Universal imap smtp exchange support | ✓ | - |
| Keyboard shortcut only navigation speed | - | - |
| Split inbox AI auto categorization | - | - |
| Read receipts and open tracking | ✓ | - |
| Snooze and scheduled send later | ✓ | - |
| Generative AI LLM email drafting | - | - |
| Conversational chat layout view | - | - |
| Unified multi account inbox view | ✓ | - |
| Pgp end to end encryption support | - | - |
| SOC2 type ii | - | - |
| ISO 27001 | - | - |
| Pricing model | Freemium | - |

*Source: Vioscale. Generated 2026-09-01T17:20:16.003Z. "-" = undocumented, not absent.*