If you use iMessage to send text messages, you can stop receiving text messages from certain people.
In the Messages app on your Mac, select a conversation.
To search for contacts and content in conversations, click in the Search field in the top-left corner and enter what you’re looking for. Or, choose from the suggested contacts, links, photos, and more.
If you’re restricted to sending and receiving messages with only certain people, an hourglass icon appears next to those people you can’t send messages to.
Choose Conversations > Block Person, then click Block.
Tip: Another way to prevent unwanted people from bothering you is to set up communication with your contacts only.
To view and manage your list of blocked phone numbers and contacts, choose Messages > Preferences, click iMessage, then click Blocked. See the Apple Support article Block phone numbers, contacts, and emails on your iPhone, iPad, or iPod touch.
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Mac OS X; NOTE: For older OS’es use older releases. There are releases for many OS version and platforms on the Sourceforge.net page. NOTE: There are also more recent nightly builds available in the forums or (for Ubuntu users) in the Ubuntu PPA repository. Please note that we consider nightly builds to be stable, usually. This article was co-authored by Chiara Corsaro.Chiara Corsaro is the General Manager and Apple Certified Mac & iOS Technician for macVolks, Inc., an Apple Authorized Service Provider located in the San Francisco Bay Area. Was founded in 1990, is accredited by the Better Business Bureau (BBB) with an A+ rating, and is part of the Apple Consultants Network (ACN). UBlock for MacOS - Download and Install uBlock for MacOS Now! The Fastest, Most-Powerful Ad Blocker for Mac. Block Ads, Pop Ups, and Trackers. Launch the Mail application on your Mac. Click on a message from a sender you'd like to block.