To increase call answer rates on iOS using Suggested Contacts from Siri, you can send an email with your business name and phone number to customers prior to calling them. This email should include the customer's first name, your Twilio phone number, and your business name in the greeting. You can use Twilio SendGrid to send this email and leverage Dynamic Templates or API requests to personalize the content. When you call the customer, Siri will suggest the contact based on the information in the email, making it more likely for them to answer the call. Additionally, using a suggested contact can lead to better voicemail transcription results if the user doesn't answer the call. This method is simple and helpful for businesses looking to improve their customer communication and increase pickup rates.