Mailbutler is an extension that adds productivity tools to an Apple Mail, Gmail, or Outlook inbox. It does not replace the email client. Users keep their current mailbox and gain tracking, templates, collaboration features, and signature tools inside it.
The company behind it is based in Berlin, started in 2015, and now has about 20 team members working remotely. Its stated mission is to make email effortless through insights, personalized outreach, collaborative inbox management, and signature-based marketing.
How does Mailbutler work?
Setup involves installing the extension, registering for an account, and using it right away, according to the company. Emails are still sent from the user's own server. Tracking data, templates, notes, and tasks are handled by Mailbutler's backend, which is hosted in Frankfurt, Germany.
The company says it does not read, analyze, or store message content or attachments, and users can customize what is saved, including saving nothing. The exception is the Smart Assistant, which sends the email body to OpenAI, with email addresses replaced by dummy variables.
Key features of Mailbutler
Email tracking reports opens and link clicks with real-time notifications. Higher plans show engagement history, device and location details, and per-recipient data. Smart Follow-ups labels tracked emails as high, medium, or low urgency. Tailored Sending adds templates with placeholders, mail merge from contacts, HubSpot, Salesforce, or CSV files, and Smart Timing suggestions.
The Smart Assistant provides Smart Compose, Smart Improve, and Smart Replies, which draft responses for the user to review. Team features include email assignments, collaborator status, notes, tasks, tags, and automations built from triggers, conditions, and actions. Signature Marketing supports HTML signatures, call-to-action buttons, images, videos, and social links.
Key Features
Open and click tracking — Shows when emails are first opened and links first clicked, with real-time notifications on desktop and mobile.
Per-recipient tracking — For emails sent to several people, shows who opened it, plus the time, location, and device used.
Smart Follow-ups — Analyzes opens, clicks, and engagement patterns to label tracked emails as high, medium, or low urgency, and the Smart Assistant can draft follow-ups.
Mail merge — Fills placeholders in a template with contact data such as name, company, and job title from Apple, Google, or Outlook Contacts, HubSpot, Salesforce, or a CSV file.
Message templates — Reusable email templates with dynamic placeholders so the same copy does not need to be rewritten.
Smart Assistant — AI features include Smart Compose from keywords, Smart Improve for spelling, grammar, tone, and clarity, and Smart Replies that draft responses for review.
Smart Timing — Suggests the best time to send an email to a contact to improve the chance of a reply.
Email assignments and collaborator status — Assign emails to teammates and see when collaborators are viewing or replying in a shared inbox to avoid duplicate work.
Notes, tasks, and tags — Share notes and tasks on emails, get notified when tasks are completed, and tag emails and Mailbutler items with titles and colors.
Automations — Rules built from triggers, optional conditions, and actions that can tag emails, add notes or tasks, and apply signatures based on events like sends, opens, and link clicks.
Marketing signatures — Pre-designed or custom HTML signatures with call-to-action buttons, images, videos, and social links, shareable across a team with locked fields.
Pros & Cons
Pros
Works inside Apple Mail, Gmail, and Outlook, so users keep their current email client.
Covers tracking, mail merge, shared inbox tools, and signatures in one extension.
14-day free trial includes all features and requires no payment details.
States ISO/IEC 27001 certification, GDPR compliance, and Frankfurt-hosted servers.
Per-user pricing starts at $4 per month with yearly billing.
Support is advertised as available 24/7 by email, plus a Support Center.
Cons
No permanent free plan is shown, only a 14-day trial.
AI features and per-recipient tracking are limited to the top-priced Smart plan.
Starter excludes message templates and mail merge, which require Professional or higher.
Smart Assistant sends email body text to OpenAI, which may matter for sensitive messages.
Pricing
Starter $4 per user per month with yearly billing ($5 shown for monthly billing)
Professional $7 per user per month with yearly billing ($9 shown for monthly billing)
Smart $11 per user per month with yearly billing ($14 shown for monthly billing)
Frequently Asked Questions
What is Mailbutler?
Mailbutler is an extension that adds email productivity tools to Apple Mail, Gmail, or Outlook. It offers email tracking, mail merge, shared inbox collaboration, AI writing help, and signature marketing.
How much does Mailbutler cost?
Plans are priced per user per month. With yearly billing they are Starter at $4, Professional at $7, and Smart at $11. The pricing page also shows $5, $9, and $14 for monthly billing, and euro pricing is available.
Does Mailbutler have a free trial?
Yes. New users get a free 14-day trial that includes all features. No payment details are required at sign-up, so users can decide on a subscription afterward.
Which email clients does Mailbutler support?
It supports Apple Mail, Gmail, and Outlook. The company says features work across clients, so a team can mix clients and still use Mailbutler together.
What does Mailbutler integrate with?
Beyond the three email clients, mail merge can pull data from Apple, Google, or Outlook Contacts, HubSpot, Salesforce, or CSV files. The Smart Assistant uses OpenAI to process email text.
Is Mailbutler secure?
The company states it is ISO/IEC 27001 certified, GDPR compliant, Microsoft 365 certified, and Google verified. Servers are in Frankfurt, Germany, and it says it does not store message content or attachments. Users can adjust what is saved.
Who is Mailbutler best for?
It suits professionals and teams who send many emails and want tracking, templates, and shared inbox tools inside their current client. Sales, consulting, and small business teams are typical fits based on the features offered.
Where is Mailbutler based?
Mailbutler is based in Berlin, Germany, and operates as a fully remote company. It started in 2015 and has about 20 team members.