Bulk SMS can be a cost-effective and efficient way to promote your charity event and increase donations. Here are some ways to use bulk SMS to promote your charity event:

1. Send event details: Send a bulk SMS to your contact list with the details of your charity event, including the date, time, location, and any special features or guest speakers.
2. Offer early bird discounts: Encourage early registration and donations by offering special discounts or incentives for those who register or donate before a certain date.
3. Use SMS to collect donations: Include a donation link or phone number in your SMS message, allowing people to donate directly from their mobile devices.
4. Follow up after the event: Use SMS to follow up with attendees after the event, thanking them for their support and reminding them of the impact of their donations.
5. Share success stories: Use SMS to share success stories and updates on the impact of your charity event, highlighting the difference that donations have made in the lives of those in need.
6. Use social proof: Share testimonials from previous donors or attendees to build trust and credibility with your target audience.
7. Provide reminders: Use SMS to provide reminders leading up to the event, such as a week before and a day before, to encourage attendance and participation.
   By using bulk SMS to promote your charity event, you can increase awareness and attendance, encourage donations, and ultimately make a greater impact in your community or cause.