Why timing is crucial for a bulk SMS campaign

Timing changes everything

SMS is read within minutes, so when you send is almost as important as what you send. A promotion that lands while a customer is busy, asleep or commuting gets ignored. The same promotion at the right moment gets read and acted on. Getting timing right is one of the easiest ways to improve a campaign.

The legal window: 10am to 9pm

For promotional SMS in India, TRAI permits sending only between 10am and 9pm. Promotional messages are not delivered outside this window, so there is no point scheduling offers for the early morning or late night. This is a rule, not a guideline.

Best days and times to send

Within the permitted window, some slots tend to work better for marketing SMS:

• Late morning (around 10am to noon): people have settled into the day and check their phones.
• Early evening (around 5pm to 8pm): after work, when offers and reminders get attention.
• Mid-week often outperforms Mondays (busy) and can beat late Fridays for business audiences, while weekends can suit retail and lifestyle offers.

Treat these as starting points. Your own audience and category may respond differently, so test and watch your delivery and response data.

Send relative to your audience

Match the send to the moment your message is useful: lunch offers before lunch, weekend events earlier in the week, payment reminders a few days before the due date, and event reminders the morning of the event. Aligning the send to the customer journey beats blasting everyone at the same hour.

Schedule instead of sending live

You do not have to be at your desk at the perfect minute. Schedule campaigns in advance so they go out at the chosen time, and stagger large sends so support and stock can keep up with the response. See why businesses use bulk SMS and the difference between promotional and transactional SMS to plan which messages can go 24x7 and which must wait for the window.