There are several free and affordable options for SMS gateways that support the Philippines' +63 country code. Here are a few suggestions:
1. Twilio: Twilio is a popular cloud communications platform that offers SMS messaging services. They support +63 numbers and offer competitive pricing. You can sign up for a free trial account to test their services.
2. TextMarketer: TextMarketer is a UK-based SMS gateway provider that supports sending SMS to the Philippines. They offer affordable pricing plans and have no setup or monthly fees.
3. Clickatell: Clickatell is a global SMS gateway provider that supports sending SMS to the Philippines. They offer a range of pricing plans and have a pay-as-you-go option, which can be an affordable option for small businesses.
4. Nexmo: Nexmo is another cloud communication platform that offers SMS messaging services. They support +63 numbers and offer competitive pricing plans.
5. Gupshup: Gupshup is a messaging platform that offers SMS and other messaging services. They support sending SMS to the Philippines and offer affordable pricing plans.
These are just a few options to consider. It's important to do your research and choose a provider that meets your specific needs and budget.