Boomerang vs Mailbutler Smart Assistant
Boomerang
boomerangapp.com
Mailbutler Smart Assistant
mailbutler.ioSide by side
| Figure | Boomerang | Mailbutler Smart Assistant |
|---|---|---|
| Price from | $4.98/mo | $7/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| Plans published | 8 | 10 |
| Spec score · Google Workspace Productivity Tools | 9.4 (#1) | 9.0 (#7) |
| Documentation | The help center is organized into feature sections with dozens of articles covering email, scheduling, troubleshooting, billing, organization and security. | The support center lists 16 getting-started, 10 tracking, 6 tailored-sending, 11 collaboration, 3 signature, 7 subscription, 5 troubleshooting and 2 FAQ articles. |
| Founded | 2010 | 2015 |
| Integrations | Bookable Schedule supports multiple calendars and integrates with Zoom and Google Meet on the Gmail product page. | Business plans sync tracking events with HubSpot and Salesforce and support Google Analytics 4 UTM data. |
| Limit: pricing | An App Store reviewer called the $20 monthly price excessive and said the annual payment was difficult to afford. | Capterra, Software Advice and GetApp reviewers say higher tiers or organization-wide deployment can be expensive. |
| Praise: support | Reviewers describe setup as easy and customer support as helpful and responsive. | Several G2 and Trustpilot reviewers describe customer support as responsive and helpful. |
| Product | Boomerang offers email productivity and meeting scheduling tools in browser extensions and mobile apps. | Mailbutler presents Smart Assistant as an AI email assistant for Apple Mail, Gmail, and Outlook. |
| Rating on Apple App Store | 4.6 out of 5 from 4.7K ratings | 4.2 out of 5 from 282 ratings. |
| Rating on Chrome Web Store | 4.2 out of 5 from 2.1K ratings | 4.6 out of 5 from 69 ratings. |
| Rating on G2 | 4.6 out of 5 from 423 reviews | 4.5 out of 5 from 65 reviews. |
| Rating on GetApp | 4.5 out of 5 from 39 reviews | 4.7 out of 5 from 91 reviews. |
| Security | Boomerang says it has SOC 2 certification for enterprise security and compliance. | Mailbutler says it is ISO/IEC 27001 certified and GDPR compliant, and that backend data is encrypted. |
| Security certification | The Chrome Web Store listing states that Boomerang is SOC 2 Type 2 certified, GDPR ready and security-audited by Google. | Microsoft’s certification record marks application security, operational security, data handling security and GDPR controls as passed or in scope. |
| Support | Premium includes priority support, and the enterprise offering lists a dedicated customer success manager, onboarding, customized training, and priority support. | Mailbutler says its customer support team answers queries 24/7 and provides a Support Center. |
| What it does | Boomerang provides email productivity and meeting scheduling tools through browser extensions and mobile apps. | Mailbutler adds AI writing, tracking, scheduling, collaboration and signature tools inside Apple Mail, Gmail and Outlook. |
Plans
Boomerang
- BasicFree
- BasicFree
- Personal$4.98 a month
- Personal$4.98 a month
- Pro$14.98 a month
- Pro$14.98 a month
- Premium$49.98 a month
- Premium$49.98 a month
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
In their own words
Boomerang
Boomerang provides email productivity and meeting scheduling through browser extensions and mobile apps. Email tools include scheduled sending, follow-up reminders, inbox snoozing, read receipts, and Inbox Pause. Meeting Poll lets invitees vote on a time, while Bookable Schedule, Free/Busy sharing, and Suggest Times support other scheduling needs. Respondable uses artificial intelligence to offer real-time help writing more actionable emails and choosing an appropriate tone. Bookable Schedule supports multiple calendars; the Gmail product page lists Zoom and Google Meet integrations, while the Outlook page lists Microsoft Teams and Zoom. Boomerang is available through extensions and Android and iOS apps. The Basic plan is free and includes 10 message credits per month, counting messages scheduled with Boomerang features. Personal is listed for Gmail addresses; Basic, Pro, and Premium list Gmail and Google Workspace accounts. Personal costs $4.98 a month billed annually, Pro costs $14.98 a month billed annually, and Premium costs $49.98 a month billed annually. A 30-day trial is listed. Boomerang says it has SOC 2 certification for enterprise security and compliance.
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.