Gmelius vs Mailbutler Smart Assistant
Gmelius
gmelius.com
Mailbutler Smart Assistant
mailbutler.ioSide by side
| Figure | Gmelius | Mailbutler Smart Assistant |
|---|---|---|
| Price from | $19/mo | $7/mo |
| Free plan | — | Yes |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| API | Yes | — |
| Plans published | 7 | 10 |
| Spec score · Email clients | 8.9 (#13) | 9.4 (#2) |
| Spec score · Google Workspace Productivity Tools | 9.0 (#4) | 9.0 (#7) |
| Founded | 2016 | 2015 |
| Free plan | No | Yes |
| Headquarters | Geneva, Switzerland | Berlin, Germany |
| Integrations | Listed integrations include Google Groups, Google Workspace Admin, Meet, Calendar, Salesforce, HubSpot, Slack, Trello, Nicereply, Zapier, Make, and Relay.app. | Business plans sync tracking events with HubSpot and Salesforce and support Google Analytics 4 UTM data. |
| Product | Gmelius is a Gmail-native platform for building and running AI agents that handle defined team jobs across connected tools. | Mailbutler presents Smart Assistant as an AI email assistant for Apple Mail, Gmail, and Outlook. |
| Security | The security page says Gmelius uses Google OAuth and encrypts data in transit and at rest; it also states email content is not stored. | Mailbutler says it is ISO/IEC 27001 certified and GDPR compliant, and that backend data is encrypted. |
| Paid from | 19 | 4 |
| Support | Gmelius offers a free 30-minute onboarding call and describes customized onboarding and account configuration assistance for teams. | Mailbutler says its customer support team answers queries 24/7 and provides a Support Center. |
Plans
Gmelius
- Meli$19 a month
- Growth$25 a month
- Pro$40 a month
- EnterprisePriced on request
- Meli$228 a year
- Growth$300 a year
- Pro$480 a year
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
Gmelius
Gmelius is a Gmail-native platform for creating AI agents that carry out defined team jobs across connected tools. Users describe an agent’s task in plain language, choose the inbox it monitors, connect tools, and decide which actions need approval, without writing code. Meli, described as an AI Chief of Staff, supplies agents with context about a team’s clients, history, and priorities. Gmelius also provides shared Gmail inboxes and labels, shared drafts, email notes and mentions, delegation, templates, analytics, calendar tools, and scheduled sending. Listed integrations include Google Groups, Google Workspace Admin, Meet, Calendar, Salesforce, HubSpot, Slack, Trello, Nicereply, Zapier, Make, and Relay.app. The Gmail extension supports Chrome, Microsoft Edge, Brave, and Opera; listed platforms also include Android, iOS, API, and web. There is no free plan, but a seven-day trial gives access to Growth; afterward, users must choose a paid plan or the account is suspended. Prices start at $19/user/mo (annual).
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.