Boomerang vs Mailbutler Smart Assistant
Boomerang
boomeranggmail.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 | Yes |
| macOS | Yes | Yes |
| Linux | — | Yes |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| API | Yes | — |
| Plans published | 4 | 10 |
| Spec score · Email Tracking Software | 9.5 (#1) | 9.3 (#2) |
| Spec score · Sales Email Tracking Software | 9.5 (#1) | 9.3 (#3) |
| Documentation | The help center covers installation, billing, troubleshooting, security, privacy, recurring mail, tracking and scheduling workflows. | The support center lists 16 getting-started, 10 tracking, 6 tailored-sending, 11 collaboration, 3 signature, 7 subscription, 5 troubleshooting and 2 FAQ articles. |
| Headquarters | Santa Clara, California, USA | Berlin, Germany |
| Integrations | Team scheduling integrates with Zoom and Google Meet and supports multiple calendars. | Business plans sync tracking events with HubSpot and Salesforce and support Google Analytics 4 UTM data. |
| Licence | The official pages do not identify an open-source licence for the Gmail product. | The terms license proprietary software, prohibit sublicensing, reverse engineering and derivative works, and allow use on up to two computers by one user. |
| Rating on Apple App Store | 4.6 out of 5 from 4.7K ratings | 4.2 out of 5 from 282 ratings. |
| Rating on Capterra | 4.7 out of 5 from 183 reviews | 4.7 out of 5 from 90 reviews. |
| Rating on Chrome Web Store | 4.9 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 | 4.7 out of 5 from 183 reviews | 4.7 out of 5 from 91 reviews. |
| Rating on Google Play | 4.2 out of 5 from 11.6K reviews | 3.3 out of 5 from 100 reviews. |
| Rating on Software Advice | 4.7 out of 5 from 183 reviews | 4.7 out of 5 from 90 reviews. |
| Security | Boomerang says its servers run in SAS-70 Type II and ISO 27001 certified data centers and that it completes annual SOC 2 Type II audits. | Mailbutler says it is ISO/IEC 27001 certified and GDPR compliant, and that backend data is encrypted. |
| Security certification | Baydin says it completes SOC 2 Type II audits annually. | Microsoft’s certification record marks application security, operational security, data handling security and GDPR controls as passed or in scope. |
| Support | Technical support is available by email at [email protected], and the Teams offering lists priority email support. | Mailbutler says its customer support team answers queries 24/7 and provides a Support Center. |
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
In their own words
Boomerang
Boomerang helps users control email timing, follow-ups, and meeting scheduling. It can schedule message delivery, snooze messages, and remind users to follow up. Inbox Pause holds incoming messages until the user is ready and can be scheduled to activate automatically. Magic Live Calendar supports bookable schedules, suggested meeting times, free/busy sharing, and team scheduling. Team scheduling integrates with Zoom and Google Meet and supports multiple calendars. Respondable uses artificial intelligence to offer real-time guidance on email effectiveness and tone. Boomerang for Gmail is available as a browser extension for Chrome, Firefox, Safari, Edge, and Opera, with Android and iOS apps also listed. The Basic plan costs nothing and includes 10 message credits per month. Paid plans start at $4.98 a month billed annually, and a 30-day trial is listed. Boomerang says it stores message headers, not message bodies, to identify messages for sending or returning. Its Gmail product uses Google OAuth 2.0 and says it does not access passwords. Technical email support is available.
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.