# Mailspring vs Spike

| Attribute | Mailspring | Spike |
|---|---|---|
| **vioscaleAI score** | 58.5 (65% (medium)) | 62.6 (49% (low)) |
| activity.commits_last_30d | 100 | - |
| adoption.github_stars | 17,885 | - |
| content.faq | `[{"answer":"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. It is indexed under Email Clients.","source":"https://getmailspring.com","question":"What is Mailspring?","confidence":0.6},{"answer":"Mailspring is open source, so it can be self-hosted and used at no licence cost. It is released under the GPL-3.0 licence. A commercial or hosted edition starts at $8 per month. Prices are published openly on the vendor's own pricing page. Pricing changes often, so verify at source before relying on it.","source":"https://getmailspring.com","question":"Is Mailspring free to use?","confidence":0.6},{"answer":"Mailspring supports Windows, macOS and Linux. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://getmailspring.com","question":"What platforms does Mailspring support?","confidence":0.6},{"answer":"We have confirmed 8 integrations for Mailspring, including Gmail, iCloud, Office 365, FastMail, Outlook.com, Yahoo!, IMAP and SMTP. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://getmailspring.com","question":"What does Mailspring integrate with?","confidence":0.6},{"answer":"Yes. Mailspring is published under the GPL-3.0 licence, a copyleft licence, so check its terms before embedding it in a closed-source product. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/foundry376/Mailspring","question":"Is Mailspring open source?","confidence":0.95}]` | `[{"answer":"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. It is indexed under Email Clients.","source":"https://www.spikenow.com/pricing/","question":"What is Spike?","confidence":0.6},{"answer":"Spike offers a free tier, so you can start without paying. Paid plans start at $4 per user per month. Prices are published openly on the vendor's own pricing page. Pricing changes often, so verify at source before relying on it.","source":"https://www.spikenow.com/pricing/","question":"Is Spike free?","confidence":0.6},{"answer":"Spike supports the web, Windows, macOS, iOS and Android. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://www.spikenow.com/pricing/","question":"What platforms does Spike support?","confidence":0.6},{"answer":"We have only confirmed a cloud / SaaS deployment for Spike, so it appears to be vendor-hosted. If a self-hosted option exists we have not found it documented publicly.","source":"https://www.spikenow.com/pricing/","question":"Can Spike be self-hosted?","confidence":0.6},{"answer":"Spike is available worldwide. The vendor is headquartered in Israel.","source":"https://www.spikenow.com/pricing/","question":"Where is Spike available?","confidence":0.75}]` |
| deployment.options | `{"self_hosted":true}` | `{"cloud":true}` |
| description.long | Mailspring is a desktop email client built as open source that runs your sync engine locally without sending credentials to remote servers. It includes core features like unified inbox, snooze, scheduled sending, and mail rules, with optional premium capabilities available through a paid subscription. | Spike combines email with team messaging features in a single platform, offering a unified inbox view across multiple accounts and calendars. It serves as a collaboration and communication tool for freelancers, entrepreneurs, and teams. |
| 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}` | `{"conversational_chat_layout_view":true,"unified_multi_account_inbox_view":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 | TypeScript | - |
| 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":"hybrid","plans":[{"free":true,"name":"Free","features":["Unified Inbox","Snooze","Send Later","Mail Rules","Templates"],"description":"Open source version with core email features","contactSales":false},{"free":false,"name":"Mailspring Pro","features":["Link tracking","Read receipts","Mailbox analytics","Contact profiles","Company profiles"],"commitment":"monthly","description":"Premium subscription unlocking additional features","contactSales":false}],"summary":"Free open source core + monthly paid Pro tier","freeTier":true,"sourceUrl":"https://getmailspring.com","retrievedAt":"2026-10-05T10:08:40.523Z","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 | freemium | freemium |
| pricing.price_level | low | low |
| pricing.starting_price | `{"amount":8,"currency":"USD"}` | `{"amount":6,"currency":"USD"}` |
| pricing.transparent | no | yes |
| release.cadence_days | 12 | - |
| release.history | `[{"url":"https://github.com/Foundry376/Mailspring/releases/tag/1.26.0","date":"2026-10-02T14:37:36Z","type":"stable","version":"1.26.0"},{"url":"https://github.com/Foundry376/Mailspring/releases/tag/1.25.0","date":"2026-09-19T22:57:29Z","type":"stable","version":"1.25.0"},{"url":"https://github.com/Foundry376/Mailspring/releases/tag/1.24.1","date":"2026-09-15T02:13:24Z","type":"stable","version":"1.24.1"},{"url":"https://github.com/Foundry376/Mailspring/releases/tag/1.24.0","date":"2026-09-13T01:27:57Z","type":"stable","version":"1.24.0"},{"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"}]` | - |
| 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: vioscaleAI. Generated 2026-10-21T19:50:42.806Z. "-" = undocumented, not absent.*