Mailbird vs. OAS (Outlook Assistant Suite) Comparison


Mailbird	OAS (Outlook Assistant Suite) Innosterex	+	+
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About Mailbird is a fast, modern email client for Windows and macOS, trusted by millions with over 4 million downloads. It brings all your accounts—Gmail, Outlook, iCloud, IMAP, Exchange—into one unified inbox with smart features like Snooze, Undo Send, Quick Reply, Send Later, email snippets, and drag-and-drop organization. Customize your workspace with themes, custom avatars, and flexible layout options. Stay productive with sidebar integrations for Google Calendar, WhatsApp, Slack, Trello, Asana, and more—no app switching needed. Built natively for each platform and optimized for both Windows 11 and Apple Silicon, Mailbird delivers speed, simplicity, and seamless control. Available in a Free version with an optional Premium upgrade. Backed by top-rated customer support.	About OAS – Outlook Assistant Suite is a productivity add-in for classic Microsoft Outlook on Windows. It brings several email management tools together in one clear application and is designed to reduce repetitive work and make Outlook easier to organise. Inbox Cleanup helps analyse and clean up your mailbox using configurable rules. Archive provides tools for organising and archiving email. Follow Up helps keep track of messages that still require action or are awaiting a reply. Rule Management provides a clear way to create and manage Outlook rules. OAS supports Dutch, English, German, French, Spanish, Italian and Portuguese. The software includes a fully functional 14-day free trial and is available with either an annual or lifetime licence. The Windows installer is digitally signed. OAS does not collect usage telemetry about how users work with OAS, Outlook, their email or their folders.
Platforms Supported Windows Supported Mac Supported Linux Not Supported Cloud Not Supported On-Premises Not Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported	Platforms Supported Windows Supported Mac Not Supported Linux Not Supported Cloud Not Supported On-Premises Not Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported
Audience Mailbird is perfect for professionals and businesses seeking a streamlined, all-in-one email management solution that enhances productivity, integrates with third-party apps, and simplifies communication across multiple email accounts	Audience Microsoft Outlook users, professionals and small businesses that want to organise and manage email more efficiently.
Support Phone Support Not Supported 24/7 Live Support Not Supported Online Supported	Support Phone Support Not Supported 24/7 Live Support Not Supported Online Supported
API Offers API Not Supported	API Offers API Not Supported
Screenshots and Videos View more images or videos	Screenshots and Videos No images available
Pricing Free Plans: Free Premium: $5.75/user/month Premium: $99/user (Pay Once) Free Version Supported Free Trial Supported	Pricing 19,95 Free Version Not Supported Free Trial Supported
Reviews/Ratings Overall 2.2 / 5 ease 3.0 / 5 features 3.0 / 5 design 3.5 / 5 support 1.8 / 5 Read all reviews	Reviews/Ratings Overall 0.0 / 5 ease 0.0 / 5 features 0.0 / 5 design 0.0 / 5 support 0.0 / 5 This software hasn't been reviewed yet. Be the first to provide a review: Review this Software
Pros & Cons from Real Users Pros I've been a happy user of Mailbird 2 and I jumped at the chance to buy the lifetime deal. This one-time payment for endless use of their great service seemed like a bargain. Mailbird 2 has been a big help, making my email tasks easier with its simple design and strong features. But things changed with the release of Mailbird 3. This new version, although better and more promising, came with a surprise. The lifetime deal I bought for Mailbird 2 does not cover this upgrade. 1. Reliability in receiving and sending email without duplicating. 2. Send Later allows review time and saves me from sending follow-up emails. 3. Unified Inbox defines by addresses by color. I like to experiment with alternatives and keep coming back to Mailbird. Initially we really liked the platform because it was similar to Apple's Mail program. Initially we really liked the platform because it was similar to Apple's Mail program. Initially we really liked the platform because it was similar to Apple's Mail program. It looks like an intuitive, great, flexible program - if you can use it. The problem is that if you run into any problems whatsoever, there is no meaningful tech support. Cons It feels like I'm being asked to pay again for Mailbird 3, and that's a letdown. I thought "lifetime" meant that any new versions would be included. But, it looks like I was wrong. I get that making and maintaining new software costs money. But, it's hard to be asked to pay again after buying a lifetime deal. Pricing. I'd also like a way to block or delete by simply listing inbound addy. There's absolutely NO service except for help articles provided on their website. There's no way to call them on the phone and just today even their email was returned by Mailbird saying it's no longer in use, but didn't provide an alternative email. The entire platform is an entire money making scam I believe. If you google these people, there's a tech support phone number. But it doesn't work. The only tech support, even for paid, premium users is by email. Essentially, there is a 2 day turnaround for each question, and most of the time, the question is "answered" by an irrelevant article url. I've been working for over 3 weeks to try to port some large archived email files from Thunderbird, and have received no useful advice. I have medical practice, medicolegal, academic, and personal files for 20 years (16 GB) I can't port.
Training Documentation Supported Webinars Not Supported Live Online Not Supported In Person Not Supported	Training Documentation Not Supported Webinars Not Supported Live Online Not Supported In Person Not Supported
Company Information Mailbird Founded: 2012 United States www.getmailbird.com	Company Information Innosterex Netherlands outlookassistant.nl/en/
Alternatives eM Client	Alternatives No Alternatives
InMoat
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Categories Email Clients Supported Email Management Supported Productivity Supported	Categories Email Management Supported
Email Management Features Data Recovery Not Supported Email Archiving Supported Email Deletion Not Supported Email Discovery Not Supported Email Monitoring Supported Email Recall Not Supported Queue Manager Not Supported Response Management Supported Routing Not Supported Shared Inboxes Not Supported Signature Management Supported Spam Blocker Supported Whitelisting / Blacklisting Not Supported Show More Features Productivity Features Collaboration Supported Database Creation Not Supported Document Creation Supported File Sharing Supported Notes Management Not Supported Office Suite Supported Presentation Tools Not Supported Project Management Not Supported Task Management Supported Team Chat Supported
Integrations Asana Supported Degoo Supported Dropbox Supported Email Signature Rescue Supported Evernote Supported Facebook Supported Google Calendar Supported Google Sheets Supported Instagram Supported Mailman Supported Microsoft Outlook Not Supported SmarterMail Supported ToDoListQ Supported Trello Supported WeChat Supported WhatsApp Supported Whereby Supported X (Twitter) Supported Xtraxtor Email Converter Supported ZeroBounce Supported Show More Integrations View All 23 Integrations	Integrations Asana Not Supported Degoo Not Supported Dropbox Not Supported Email Signature Rescue Not Supported Evernote Not Supported Facebook Not Supported Google Calendar Not Supported Google Sheets Not Supported Instagram Not Supported Mailman Not Supported Microsoft Outlook Supported SmarterMail Not Supported ToDoListQ Not Supported Trello Not Supported WeChat Not Supported WhatsApp Not Supported Whereby Not Supported X (Twitter) Not Supported Xtraxtor Email Converter Not Supported ZeroBounce Not Supported Show More Integrations View All 1 Integration
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