OutMass

OutMass

Metis Information Technologies Ltd
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About

MailMop is a Gmail inbox cleanup tool that analyzes messages in the browser and ranks senders by message volume, helping users identify clutter. Users can delete messages in bulk by sender, set exceptions, unsubscribe from newsletters, block senders, create Gmail filters, mark messages as read, and apply labels. Browser-based processing keeps email content off MailMop's servers. Its source-available code can be inspected, and MailMop has passed Google's CASA 2 security assessment. A free plan includes inbox analysis, sender statistics, and unsubscribing. The Pro plan adds one-click bulk actions, including bulk deletion, advanced filtering and labels, and sender blocking, for $22.68 per year billed annually.

About

OutMass is a browser extension for Chrome and Edge that adds mass-email and mail-merge capability to Outlook on the web. Campaigns are built inside Outlook itself, and every message is sent through the user's own Microsoft account via the official Graph API, so recipients see a normal email rather than a bulk sender. Microsoft 365 and personal Outlook accounts are both supported. Campaigns start from a CSV: each column becomes a merge tag, and every recipient gets a personalized message. Open and click tracking show who engaged, and a daily reply check catches responses. Automated follow-ups re-contact non-openers and stop the moment someone replies. Scheduled sending, per-day send limits, A/B subject testing, an AI email writer, reusable templates, campaign reports with CSV export, unsubscribe links and OneDrive-link attachments complete the toolset. The interface is available in 13 languages. Free plan: 250 emails per month. Starter: $9/month for 2,500. Pro: $19/month for 10,000.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Gmail users, including individuals and small teams, who want to identify and clear inbox clutter using browser-based processing.

Audience

Sales and business development teams, recruiters and staffing agencies, marketers, consultants and virtual assistants — individuals and small-to-mid-size teams who run outreach from Microsoft 365 or Outlook.com and want personalized bulk email with tracking and follow-ups without leaving Outlook.

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

No images available

Screenshots and Videos

No images available

Pricing

$22.68/year
The hosted Basic plan is free and includes inbox analysis, sender statistics, unsubscribing, and data export. Pro costs $22.68 per year, billed annually, and adds one-click bulk actions.
Free Version Supported
Free Trial Not Supported

Pricing

$9 per month
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

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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

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

MailMop
Founded: 2025
mailmop.com

Company Information

Metis Information Technologies Ltd
Founded: 2026
United Kingdom
getoutmass.com

Alternatives

No Alternatives

Alternatives

MailMerge365

MailMerge365

Sol Inventum
EmailMerge365

EmailMerge365

Standss (South Pacific) Pte Limited
EmailMerge for Outlook

EmailMerge for Outlook

Standss South Pacific Pte Ltd

Categories

Email Management Supported

Categories

Bulk Email Supported
Mail Merge Supported

Integrations

Google Chrome Not Supported
Microsoft Outlook Not Supported

Integrations

Google Chrome Supported
Microsoft Outlook Supported
Claim MailMop and update features and information
Claim MailMop and update features and information
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Claim OutMass and update features and information