Hello, need some help finding a suitable option for messaging service for my website.

I am creating gym management website for gym owners. I want to add a feature, where messages can be sent to members notifying them about new plans, membership expiration, etc.

I was thinking of using whatsapp as medium of delivering messages as almost everyone has WhatsApp and people rarely read simple messages carefully.

So I did some research by asking ChatGPT and my options that I know are

  1. WhatsApp Cloud API
  2. Twilio WhatsApp API
  3. Gupshup WhatsApp API
  4. WATI by Clare.AI

See picture 1 for details.

I have no knowledge about these and I wanted to ask which one would be suitable for me.

My requirements—

  1. My website is mostly directed at small-medium gyms (300-600 members), so one owner may need to about maximum 1000-1500 message per month.

Please help me found one suitable option and also if you have any other option not listed here, please mention it if it’s good.

Also, here are some pictures of website, please tell how does it looks. It is in WIP.