# Proton Mail vs Spark Mail

**Leader by vioscaleAI score:** Proton Mail

| Attribute | Proton Mail | Spark Mail |
|---|---|---|
| **vioscaleAI score** | 75 (72% (medium)) | 53.2 (74% (medium)) |
| content.faq | `[{"answer":"An email platform using zero-access encryption so the provider cannot read messages, funded by subscriptions rather than data exploitation. It is indexed under Email Clients.","source":"https://proton.me/business/pass/pricing","question":"What is Proton Mail?","confidence":0.6},{"answer":"Proton Mail offers a free tier, so you can start without paying. Paid plans are also available: Pass Essentials, Pass Professional, VPN and Pass Professional and Workspace Standard. Pricing changes often, so verify at source before relying on it.","source":"https://proton.me/business/pass/pricing","question":"Is Proton Mail free?","confidence":0.6},{"answer":"Proton Mail supports the web, Windows, macOS, Linux, iOS, Android and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://proton.me/business/pass/pricing","question":"What platforms does Proton Mail support?","confidence":0.6},{"answer":"We have only confirmed a cloud / SaaS deployment for Proton Mail, so it appears to be vendor-hosted. If a self-hosted option exists we have not found it documented publicly.","source":"https://proton.me/business/pass/pricing","question":"Can Proton Mail be self-hosted?","confidence":0.6},{"answer":"We have confirmed 11 integrations for Proton Mail, including Gmail, Outlook, Yahoo, Apple Mail, Thunderbird, Google, Okta and Microsoft Entra ID, plus 3 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://proton.me/business/pass/pricing","question":"What does Proton Mail integrate with?","confidence":0.6},{"answer":"We have independently confirmed SOC 2, ISO 27001, HIPAA and GDPR for Proton Mail. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Proton Mail not holding them. Always confirm compliance directly before you rely on it.","source":"https://proton.me/nb/business/mail/security","question":"What security certifications does Proton Mail have?","confidence":0.7},{"answer":"Proton Mail is available worldwide. Its primary markets are the EU, the United States and the United Kingdom. The vendor is headquartered in Switzerland.","source":"https://proton.me/business/pass/pricing","question":"Where is Proton Mail available?","confidence":0.75}]` | `[{"answer":"Spark Mail is an email client that streamlines email handling through automated inbox organization, team collaboration features, and AI-assisted capabilities, with synchronized access across multiple accounts and devices. It is indexed under Email Clients.","source":"https://sparkmailapp.com","question":"What is Spark Mail?","confidence":0.6},{"answer":"Spark Mail offers a free tier, so you can start without paying. Paid plans start at $10 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://sparkmailapp.com/de/pricing-teams","question":"Is Spark Mail free?","confidence":0.6},{"answer":"Spark Mail supports Windows, macOS and iOS. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://sparkmailapp.com","question":"What platforms does Spark Mail support?","confidence":0.6},{"answer":"We have only confirmed a cloud / SaaS deployment for Spark Mail, so it appears to be vendor-hosted. If a self-hosted option exists we have not found it documented publicly.","source":"https://sparkmailapp.com","question":"Can Spark Mail be self-hosted?","confidence":0.6},{"answer":"We have confirmed 30 integrations for Spark Mail, including Asana, MeisterTask, TickTick, Todoist, Trello, 2Do, OmniFocus and Reminders, plus 22 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://sparkmailapp.com","question":"What does Spark Mail integrate with?","confidence":0.6},{"answer":"We have independently confirmed SOC 2 and GDPR for Spark Mail. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Spark Mail not holding them. Always confirm compliance directly before you rely on it.","source":"https://sparkmailapp.com/de/pricing-teams","question":"What security certifications does Spark Mail have?","confidence":0.6},{"answer":"Spark Mail is available worldwide. Its primary market is the United States.","source":"https://sparkmailapp.com","question":"Where is Spark Mail available?","confidence":0.75}]` |
| deployment.options | `{"cloud":true}` | `{"cloud":true}` |
| description.long | A cloud-based email platform using end-to-end encryption to keep all messages private from Proton and advertisers, funded by subscriber revenue. It provides a permanent free tier with core email functionality, plus paid plans offering enhanced storage, custom domains, and integrated business services. | A cross-platform email application offering core email functionality for free, with advanced features and team collaboration available through premium plans. Includes AI-assisted email handling, calendar integration, and task management connectors. |
| features.capabilities | `{"iso_27001":true,"soc2_type_ii":true,"pricing_model":"freemium","deployment_model":"cloud_synchronization_proxy","conversational_chat_layout_view":false,"read_receipts_and_open_tracking":false,"snooze_and_scheduled_send_later":true,"generative_ai_llm_email_drafting":true,"unified_multi_account_inbox_view":true,"pgp_end_to_end_encryption_support":true,"split_inbox_ai_auto_categorization":false,"universal_imap_smtp_exchange_support":true,"keyboard_shortcut_only_navigation_speed":false}` | `{"pricing_model":"freemium","deployment_model":"cloud_synchronization_proxy","generative_ai_llm_email_drafting":true,"unified_multi_account_inbox_view":true,"split_inbox_ai_auto_categorization":true,"universal_imap_smtp_exchange_support":true}` |
| integrations.count | 7 | 20 |
| integrations.list | `[{"name":"Gmail"},{"name":"Outlook"},{"name":"Yahoo"},{"name":"Apple Mail"},{"name":"Thunderbird"},{"name":"Google"},{"name":"Okta"},{"name":"Microsoft Entra ID"},{"name":"ADFS"},{"name":"Edugain"},{"name":"SimpleLogin"},{"name":"Yahoo Mail","native":false,"category":"email","direction":"inbound"},{"name":"Chrome","native":false,"direction":"bidirectional"},{"name":"Firefox","native":false,"direction":"bidirectional"}]` | `[{"name":"Asana"},{"name":"MeisterTask"},{"name":"TickTick"},{"name":"Todoist"},{"name":"Trello"},{"name":"2Do"},{"name":"OmniFocus"},{"name":"Reminders"},{"name":"Things"},{"name":"Evernote"},{"name":"Instapaper"},{"name":"OneNote"},{"name":"Agenda"},{"name":"Bear"},{"name":"Notion"},{"name":"Box"},{"name":"Dropbox"},{"name":"Google Drive"},{"name":"OneDrive"},{"name":"GoTo Meeting"},{"name":"Zoom"},{"name":"Google Calendar"},{"name":"Outlook"},{"name":"Microsoft Teams"},{"name":"Gmail"},{"name":"Yahoo"},{"name":"AOL"},{"name":"Exchange"},{"name":"iCloud"},{"name":"HubSpot"},{"name":"Salesforce"}]` |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"primaryMarkets":["US"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"cli":true,"ios":true,"mac":true,"web":true,"linux":true,"android":true,"windows":true}` | `{"ios":true,"mac":true,"web":true,"android":true,"windows":true}` |
| pricing | `{"type":"freemium","plans":[{"free":true,"name":"Free","summary":"Free forever","features":["End-to-end encryption","Email and calendar access"],"components":[{"kind":"fixed","amount":0,"period":"month","currency":"USD"}],"description":"Basic email functionality with the same encryption and security as paid plans","contactSales":false},{"free":false,"name":"Workspace Standard","summary":"$12.99/user/month, billed annually at $155.88","features":["1 TB cloud storage","15 custom email domains","VPN access for 10 devices","25 booking pages","Password manager","Collaborative document editing"],"commitment":"annual","components":[{"kind":"fixed","amount":12.99,"period":"month","currency":"USD"}],"description":"All Proton products bundled including email, storage, VPN, and collaboration tools for teams","contactSales":false,"includedLimits":{"storage":"1 TB per user","calendars":"25","custom_domains":"15"}}],"summary":"Free tier available. Paid plans starting at $12.99/user/month for business bundles.","currency":"USD","freeTier":true,"sourceUrl":"https://proton.me/business/pass/pricing","retrievedAt":"2026-10-12T16:05:55.600Z","startingPrice":{"amount":12.99,"period":"month","currency":"USD"},"billingPeriods":["month","year"]}` | `{"type":"subscription","plans":[{"free":true,"name":"Free","summary":"Free","features":["Unlimited email accounts","Smart search","Smart notifications","Scheduled send","Snooze","Set aside","Mark as done","Swipe actions","Control center","Quick replies","Print emails","Dark mode","Mute threads","Templates","Third-party integrations","Link sharing"],"components":[{"kind":"fixed","amount":0,"period":"month","currency":"USD"}],"description":"Unlimited email accounts with core inbox management features","contactSales":false},{"free":false,"name":"Plus","summary":"$10/user/month or $120/year","features":["All Free features","Comprehensive mail productivity","Spark +AI (AI assistant)","Basic team collaboration","Custom templates","Productive integrations","5 lifetime meeting notes"],"components":[{"kind":"per_unit","unit":"user","amount":10,"period":"month","currency":"USD"},{"kind":"per_unit","unit":"user","amount":10,"period":"year","currency":"USD"}],"description":"For individuals and small teams needing email productivity tools","contactSales":false,"includedLimits":{"ai_meeting_notes":"5 lifetime"}},{"free":false,"name":"Pro","summary":"$20/user/month or $240/year","features":["All Plus features","Unlimited +AI meeting notes","Workflows","Automatic labels (coming soon)","Read status","Advanced team collaboration","HubSpot integration","Spark CLI with triage access","40 meeting notes per month"],"components":[{"kind":"per_unit","unit":"user","amount":20,"period":"month","currency":"USD"},{"kind":"per_unit","unit":"user","amount":20,"period":"year","currency":"USD"}],"description":"For professionals and teams with customer contact who need advanced features","contactSales":false,"includedLimits":{"ai_meeting_notes":"40 per month"}},{"free":false,"name":"Enterprise","summary":"Custom pricing - contact sales","features":["All Pro features","Security & control (SOC II compliance)","Dedicated customer success management","1:1 productivity coaching","Centralized billing","Team management"],"description":"For larger teams requiring enhanced security and support","contactSales":true}],"summary":"Free tier available. Plus $10/user/month, Pro $20/user/month (or annual billing). Enterprise custom pricing.","currency":"USD","freeTier":true,"sourceUrl":"https://sparkmailapp.com/de/pricing-teams","retrievedAt":"2026-08-20T14:05:07.204Z","freeTrialDays":7,"startingPrice":{"unit":"user","amount":10,"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":12.99,"currency":"USD"}` | `{"amount":10,"currency":"USD"}` |
| pricing.transparent | yes | no |
| reliability.sla_pct | 99.95 | - |
| security.certifications | `[{"name":"ISO 27001","status":"active"}]` | - |
| security.gdpr | yes | yes |
| security.hipaa | yes | - |
| security.iso27001 | yes | - |
| security.pci | yes | - |
| security.soc2 | yes | yes |
| security.trust_center | https://proton.me/nb/business/mail/security | https://sparkmailapp.com/blog/privacy-explained |

## Capabilities (Email Clients)

| Capability | Proton Mail | Spark Mail |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Deployment model | Cloud synchronization proxy | Cloud synchronization proxy |
| 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 | Freemium |

*Source: vioscaleAI. Generated 2026-10-16T00:20:23.433Z. "-" = undocumented, not absent.*