Here is a summary of the article in one paragraph: Promotional SMS continues to gain traction with modern-day consumers, being one of their most preferred communication channels. However, it's also a personal medium and people safeguard their phone numbers from brands they don't trust. To engage with customers, businesses use promotional SMS for marketing and advertising messages, such as welcome messages, timely deals, new product releases, and upcoming event registrations. Promotional SMS differs from transactional SMS, which aims to deliver critical information, like appointment reminders and order confirmations. While promotional SMS has advantages like high open rates and inexpensive delivery, it also has disadvantages, including short message limits and potential intrusion. To optimize campaigns, businesses should ensure permission, keep messages short, segment recipients, include a call-to-action, send on time, and respect opt-outs.