What actually works as a message to your whole list
The messages that get a good response share one trait: the customer needed the information anyway. You are closed on Monday. The van has broken down. The thing they asked about is back in stock. The kitchen is doing a one-off menu on Friday.
The messages that get people opting out are the ones sent because it had been a while since the last one. There is no filler in a text message, because a customer reading it on a lock screen can tell immediately whether it was worth the interruption.
A working example: BAKERY ON FIFTH: closed Monday for the bank holiday, open as normal Tuesday 7am. Sourdough back on Wednesday.
Building a list customers actually opt into
A QR code at the till, on the receipt, or on a card in the bag. Customers scan it, add their own number, and they are on the list. You never upload anyone and never guess whether a number was fair game.
Tell them what they are getting before they sign up. Closures and offers, about once a month is a promise people can judge. Join our list is not, and it gets far fewer sign-ups.
Because customers add themselves, the permission question answers itself. That is the part most small businesses get wrong when they text a list built from old order forms.
Timing and how often
Messages send at 12pm Eastern on the date you choose, up to 30 days ahead. That is useful for holiday hours, sales you already know about, and anything seasonal you would rather write now than remember later.
On frequency, once a month is comfortable and once a week is where people start leaving. The exception is genuinely useful operational news, which customers rarely object to however often it comes.
You can send as many messages to the same list as you need. Each one is charged separately at the price for your list size. Scheduling messages in advance covers the mechanics.
What this does not do
It is one-way by design. Customers can reply and it comes back to you, but there is no shared inbox, no conversation history and no way to run customer service through it.
There is no segmentation. Everyone on a list gets the same message, so if your trade customers and your retail customers need different things, they need to be two separate lists.
And there is nothing automated. No abandoned basket messages, no birthday offers, no triggers from your till system. If you need that, a marketing platform with a monthly fee is the right purchase.
Where the cost lands against the alternatives
Subscription SMS marketing platforms generally start around twenty to thirty dollars a month, plus per-message costs above an included allowance. For a business messaging weekly that can be good value.
For a business that sends six or eight messages a year, paying five dollars once for a list of 100 is a different order of cost entirely. The quiet months are the ones that make subscriptions expensive.
Leaving a subscription you barely use covers how to move a list across, and the comparison with the bigger platforms covers what you give up by doing it.