Mobile-first marketing strategies are focused on delivering a seamless and engaging experience to customers on their mobile devices. SMS can play a critical role in mobile-first marketing strategies, as it allows businesses to connect with customers directly on their mobile phones. Here are some ways SMS can be used in mobile-first marketing strategies:

1. Personalization: Personalization is key to mobile-first marketing, and SMS allows businesses to personalize messages based on the recipient’s preferences and behavior. This can help increase engagement and drive conversions.
2. Customer engagement: SMS can be used to engage with customers in real-time, delivering timely and relevant messages that encourage interaction and build loyalty.
3. Two-way communication: SMS allows for two-way communication, which can be used to gather feedback, answer questions, and provide customer support. This can help businesses build relationships with customers and improve the overall customer experience.
4. Mobile optimization: SMS messages can be optimized for mobile devices, ensuring that they are easy to read and interact with on smaller screens. This can help improve the effectiveness of SMS marketing campaigns.
5. Integration with other channels: SMS can be integrated with other marketing channels, such as email and social media, to create a cohesive and integrated marketing strategy. This can help ensure a consistent brand message across all channels and increase the effectiveness of marketing campaigns.

Overall, SMS can play a critical role in mobile-first marketing strategies, allowing businesses to connect with customers directly on their mobile devices and deliver personalized, engaging, and timely messages that build relationships and drive conversions.