Everything below is the difference between a marketing channel you own and a number Meta restricts.
Opt-in is not a formality
Every contact you message should have agreed to hear from you: a checkbox at booking, a reply to a keyword, a form at the till. DMly records where and when each customer opted in, so if there is ever a dispute you have the evidence and not an argument.
Frequency is what gets you blocked
Twice a month to a well-chosen segment is a business. Twice a week to everybody is spam, and your customers will tell Meta so with the block button. We cap and warn you when a segment is being messaged too often.
Make every send have one job
A broadcast with three offers, a new branch announcement and a public holiday greeting does nothing. One message, one action, one link, and a reply path for the people who want to talk. Response rates roughly double when you do this.
Read the numbers that matter
Delivered is not a result. Look at replies, bookings created, payments collected and blocks per thousand. DMly reports all four per campaign so you can see which offer actually moved money and which quietly annoyed people.
Stop means stop, automatically
Every broadcast carries an opt-out. When someone uses it, DMly removes them from promotional sends immediately while keeping service messages, so their booking reminders still arrive. That one detail protects your quality rating more than anything else.