Mailbutler Smart Assistant vs Spark Mail
Mailbutler Smart Assistant
mailbutler.io
Spark Mail
sparkmailapp.comSide by side
| Figure | Mailbutler Smart Assistant | Spark Mail |
|---|---|---|
| Price from | $7/mo | $8.25/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | — |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | — |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| Plans published | 10 | 6 |
| Spec score · Email clients | 9.4 (#2) | 9.1 (#6) |
| Founded | 2015 | 2007 |
| Free plan | Yes | Yes |
| Integrations | Business plans sync tracking events with HubSpot and Salesforce and support Google Analytics 4 UTM data. | Listed integrations include Asana, Evernote, Google Drive, Microsoft Teams, Notion, Slack, Todoist, Trello, and Zoom, with availability varying by platform. |
| Product | Mailbutler presents Smart Assistant as an AI email assistant for Apple Mail, Gmail, and Outlook. | Spark is a cross-platform email app designed to filter out distractions and help users focus on important messages. |
| Security | Mailbutler says it is ISO/IEC 27001 certified and GDPR compliant, and that backend data is encrypted. | Spark says it uses Google Cloud for data storage and encryption, and says user data is used for product optimization and is not shared with third parties. |
| Paid from | 4 | 8.25 |
| Support | Mailbutler says its customer support team answers queries 24/7 and provides a Support Center. | The pricing page lists self-service support, priority support, and dedicated customer success manager support, depending on plan. |
Plans
Mailbutler Smart Assistant
- StarterFree
- Professional$9 a month
- Smart$14 a month
- Business$32 a month
- Professional (yearly billing)$7 a month
- Professional (monthly billing)$9 a month
- Smart (yearly billing)$11 a month
- Smart (monthly billing)$14 a month
- Business (yearly billing)$24 a month
- Business (monthly billing)$32 a month
Spark Mail
- FreeFree
- Plus$10 a month
- Pro$20 a month
- Plus$99 a year
- Pro$199 a year
- EnterprisePriced on request
In their own words
Mailbutler Smart Assistant
Mailbutler Smart Assistant adds AI writing and email-management tools to Apple Mail, Microsoft Outlook, and Gmail. It drafts messages from keywords or prepares replies using details a user supplies, with controls for format, length, style, tone, and language. It can summarize selected emails, identify to-dos for Mailbutler Tasks, and suggest spelling and grammar improvements to drafts. Mailbutler says the assistant uses OpenAI GPT-4o. Smart Assistant is included in a 14-day trial, then requires a Smart or Business subscription. The separate free Starter plan includes a visible Mailbutler watermark on sent emails. Mailbutler says email subjects and bodies are processed by Microsoft Azure OpenAI Service in the EU, with personal data redacted before submission to the underlying model. It also says backend data is encrypted and that it is ISO/IEC 27001 certified and GDPR compliant. Apple Mail support is listed for macOS Tahoe, Sequoia, Sonoma, and Ventura; mobile apps require iOS 15 or later or Android 7 or later.
Spark Mail
Spark Mail is an email app for Android, iOS, macOS, and Windows that helps users focus on important messages. Smart Inbox separates priority mail from other messages, while a unified inbox brings multiple accounts together. It supports IMAP, iCloud, Exchange, Outlook, Yahoo, and Google accounts, as well as offline access, scheduled sending, and calendar tools. Teams can collaborate on email in real time, add private comments and shared information, delegate ownership, track progress, and set deadlines. Spark +AI can translate, summarize, draft, and proofread email; AI Assistant can find information and take action across emails, attachments, meeting notes, and events. AI is disabled by default, and AI features have plan-based monthly quotas. Listed integrations include Asana, Evernote, Google Drive, Microsoft Teams, Notion, Slack, Todoist, Trello, and Zoom, with availability varying by platform. The free plan includes unlimited accounts, Smart Inbox, Smart Notifications, essential email productivity, and Calendar. Plus costs $10 a month per user, and Pro costs $20 a month per user. A 7-day Plus and Pro trial is available when subscribed to directly in the app.