Sales Tools

Mailbutler Alternatives

Sellizer is a free-to-try Mailbutler alternative that can track and analyse your proposals. Sellizer is a comprehensive sales supporting tool that will notify you when a customer opens your proposal and provide key statistics that you and your sales team need.

Sellizer increases your and your sales team selling chances with their own internal analytic system based on AI technology.

Differences between Mailbutler and

Sellizer Mailbutler
E-mail openness notification ✔️
E-mail notifications for each opening of an offer ✔️
SMS notifications when an offer is first open ✔️
Automatic follow-ups (like a human) ✔️
Real-time statistics ✔️ ✔️
Sales proposals analytics ✔️
Automatic sales reports ✔️
Machine learning ✔️
Personalized proposals ✔️
Sales team management ✔️ ✔️
Proposals statuses ✔️
Integrations ✔️ ✔️
JavaScript code support ✔️
Bulk sending ✔️
Sending automation ✔️ ✔️
Lead nurturing ✔️
Prices (range) month / 1 user $4.15~30.30 $0~34.95

Mailbutler is a platform for sharing all kinds of documents securely and easily. It allows you to store documents, password protect them, and analyze what’s going on after sending them.

Mailbutler key features:

  • Email Tracking
  • Send Later
  • Signatures
  • Notes & Tasks
  • Message Templates
  • Contacts

Mailbutler alternative – what’s the same with Sellizer

  • Contacts (CRM features)
  • Sending later
  • Email tracking

What Mailbuttler is missing – what has Sellizer

  • Lack of automatic follow-ups
  • Lack of SMS notifications
  • Lack of Proposals statues
  • Lack of Bulk sending features and JS code implementation
  • Sellizer is based on Machine Learning technology

Mailbutler vs Sellizer

Mailbutler is a German software company which was designed to help professionals and teams manage emails better. The company’s productivity extension for Apple Mail, Gmail, and Microsoft Outlook comes with a substantial suite of features that help over 100k professionals achieve their ideal work-life balance everyday.

Sellizer is a comprehensive proposal tracking software.  Extensive analytics allow you to track how long they were reading the offer, on which pages they spent the most time, which elements they skipped, if they shared the content with someone or if they printed it. It will help you customize the proposal accordingly and lead the discussion.

Thanks to Sellizer, I know which parts of my proposals are the most interesting for my customers – it gives me great basis to start a valuable conversation. I can also contact with clients in the best time – when they have my proposal right in front of them. Such combination made it so much easier for me to sell projects

Damian Rams (Digital Analytics Consultant)

What makes Sellizer a great Mailbutler alternative?


If you need automated follow ups and focusing more on converting leads into paying customers with AI automation tools choose Sellizer.

Easy to use

Sellizer is the most user-friendly app available on the market. With, just a few simple clicks, you can launch your first proposal with automated tracking system.

Proposals’ analytics

Sellizer provides you with the essential data that will help to improve your proposals’ effectiveness. Use it to increase selling chances.


You can try Sellizer for free for 14 days. No commitments. No credit card.

Why switch from Mailbutler to Sellizer?

Don’t wait for the competition to take over your customers.
Improve your sales process with Sellizer – proposal tracking software you actually use.

Marcin Zaborowski, CEO at

By Pawel

A big fan of Internet Marketing who enjoys Automation Tools. His mission is to help small and medium-sized companies manage and advertise their businesses using the best (and fancy) methods.

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