Spam Blocker Pro - Mezo

Mezo SMS AI - Spam Blocker, Text Blocker

Contains adsIn-app purchases

About this app

Fed up with spam? Take back control with Mezo SMS Blocker – the most powerful spam protection app for Android!

Instantly stop bothersome texts, including political spam and gambling, adult, loan offers and all sorts of unwanted messages, and enjoy peace of mind with our advanced, AI-driven spam blocking technology.

Wondering how to block spam texts?
• How to block texts from unknown or suspicious numbers?
• How to stop spam messages from emails accounts?
• How to block group texts?
• How to block messages from unknown numbers?
• How to block SMS from always changing numbers?

If you’ve asked these questions, you’ve found the ultimate solution.

Plus, Mezo SMS offers a range of free and premium tools to make messaging smarter, safer, and hassle-free.

✅ ROBO TEXT KILLER
Easily block unwanted texts. Mezo SMS offers the strongest blocking options based on phone numbers, sender titles, keywords, email sources, and wildcard rules. Stop spam from unknown contacts, non-numeric sources, or scam alerts. Keep only the messages that matter in your clean inbox.

✅ FREE SPAM BLOCKER
Award-winning and trusted by users nationwide, Mezo SMS automatically blocks spam from numbers, unknown senders, and sources like political campaigns, robocalls, and promotional texts. Our AI-powered spam protection gets smarter every day.

✅ EMAIL SPAM BLOCKER
Stop spam texts coming from email addresses, including Gmail variations. Keep your inbox safe from phishing and other unwanted messages.

✅ SMS BACKUP
Backup your important texts securely on Google Drive. Schedule backups daily, weekly, or monthly, and restore messages easily without duplicates—even on a new phone.

✅ ORGANIZED SMS
Messages are grouped intelligently by sender. View personal and business texts separately, star important messages, and access them in dedicated folders. Mezo SMS helps you prioritize what’s important.

✅ CHARACTER & SMS CHARGE COUNTER
Track message length in real time and see how many texts you’ll be charged for before you send them. Save money by avoiding unnecessary charges.

✅ DARK THEME
Enjoy a sleek dark mode that’s easy on the eyes and perfect for late-night texting.

✅ MMS COMPATIBLE
Fully supports MMS so you can send and receive photos, videos, and multimedia messages without hassle.

✅ DUAL SIM SUPPORT
For dual SIM phones, easily track which SIM received a message and select the right SIM when sending texts.

✅ POWERFUL SEARCH
Find specific messages instantly—no more endless scrolling!

✅ CLEAN & SIMPLE INTERFACE
A modern, user-friendly interface designed to meet today’s messaging needs. Stay organized without the clutter.

✅ HIGH PERFORMANCE
Whether you have hundreds or tens of thousands of texts, Mezo SMS delivers smooth, fast, and reliable performance.

✅ PREMIUM FEATURES
Unlock advanced spam protection tools like keyword-based blocking, email spam filtering, group message control, and instant spam deletion.

Political spam, robo messages, voting alerts, scams—Mezo SMS handles them all so you can focus on what matters.

Try Mezo SMS today and enjoy a spam-free messaging experience you can trust!

Note: All trademarks are owned by their respective owners. Mezo SMS was formerly known as Key Messages.

Ratings and reviews

Exceptional app. I tried it for three days, and it blocked 15 sms spam messages. I only had to allow 1 that it blocked in error. I stepped up and paid for the one-time fee. Unless it breaks, it will be on every device because I detest spam txt more than email spam. The April 25th, 2025 update broke it. Support resolved the issue within a few days. Only issue in about five years.

I can no longer send texts. Premium account. All contacts say "sender does not support replies" and there is no way to actually type in a text. Switched to stock Android text app and texting send and receive is working fine. Happened at a very critical time (family member in hospital). It just happened between yesterday and today and I didn't change any settings in phone or app because my last sent text was 3pm yesterday. EDIT: update seems to have fixed it. Thx.

I am suddenly unable to send any messages. I am getting a message that says "Sender doesn't support replies" on all messages. When I switch back to the default messaging app I am able to send and receive perfectly fine. Edit: Y'all are the best! Thank you so very much! This is the only app I pay monthly for due to family issues and I panicked when it stopped working! Thank you so much for all of your hard work keeping this app up and running for us!

What’s new

- Improved display for OTP
- Minor bug fix
- Admob update