Every gym sends renewal reminders. The question is whether members actually see them. A reminder that gets sent but never read is functionally the same as never sending one — the member still lapses, you still lose a renewal, and you still have to chase them afterward.
Why SMS quietly stopped working
SMS used to be the default channel for exactly this kind of message, but most people's SMS inbox is now mostly OTPs, delivery updates, and promotional messages from numbers they do not recognise. A gym renewal reminder sitting in that inbox competes with all of it, and it is easy to see the sender ID, not register who it is actually from, and swipe past it without reading it.
There is also a cost problem: SMS is billed per message through a gateway, so sending anything more than a short, plain-text reminder gets expensive fast, and formatting is limited to what fits in 160 characters.
Why WhatsApp reminders get read
WhatsApp is not competing for attention the same way. Most people check it multiple times a day for personal conversations, and a message from a gym they actually go to reads differently in that context than an anonymous SMS sender ID does. It is also the channel gyms in India increasingly use to communicate anyway — the reminder is arriving where the member already expects to hear from the gym, not in an inbox reserved for automated notices.
Smarto Gym sends renewal reminders and dues follow-ups straight to a member's WhatsApp using saved templates and a single tap, included with every subscription plan at no extra cost — see the WhatsApp reminders page for the full flow. It is not an add-on you have to opt into separately; it is part of how renewals are meant to work from day one.
The cost adds up differently, too
Beyond whether a message gets read, the two channels are billed differently. SMS is typically charged per message through a gateway, so the cost scales directly with how many reminders and follow-ups you send — and it is tempting to send fewer than you should, just to keep the bill down. WhatsApp reminders on Smarto Gym are included with every subscription plan at no extra per-message cost, so there is no reason to ration renewal reminders or skip a dues follow-up to save money.
Templates matter more than the channel
Switching channels alone will not fix a reminder that is vague or arrives too late. A reminder that actually gets a response tends to do a few simple things: it goes out before the expiry date, not after; it says clearly what plan is expiring and when; and it makes renewing simple rather than making the member call the gym to figure out what to do next. Saved templates make this consistent — every reminder follows the same clear format instead of depending on whoever is at the desk to phrase it well that day.
Get consent, and respect opt-outs
Whichever channel you use, the gym is the one sending the message, and that comes with responsibility. Only message members who expect to hear from you, keep the content relevant to their membership, and stop messaging anyone who asks you to. WhatsApp is operated by a third party with its own messaging policies, so occasional delivery delays or a blocked message are possible regardless of which software sends it — worth knowing so you are not caught off guard the first time it happens, rather than assuming every reminder is guaranteed to land instantly.
Timing beats volume
Sending more reminders is not the same as sending better ones. A single well-timed WhatsApp message a few days before a membership expires, followed by one dues follow-up if it lapses without renewal, does more than a string of repeated SMS blasts. The goal is a member who sees the reminder and acts on it, not one who has been messaged so often they start ignoring the gym's number entirely.
What this means in practice
If your gym is still relying on SMS, or on someone manually remembering to message members before their plan expires, the fix is not more effort — it is a channel members actually check, sent automatically as expiry dates approach. That is the entire point of building renewal reminders into the software itself rather than treating them as a manual task on top of it.
It is a small change to make on paper — swap the channel, use a saved template instead of typing each message by hand — but it is the kind of small change that compounds. A handful of renewals caught earlier each month, instead of noticed only after a membership has already lapsed, adds up over a year in a way that is easy to underestimate until you actually track it.