Afilnet

Three hundred customers need to hear that the shop opens late tomorrow, which means a long evening with a sore thumb if you text each one. The whole list gets the message from Afilnet in one go, as a text, an email, a WhatsApp message or a call that reads your words aloud. Contacts come from an Excel, CSV or TXT file, and each message can carry the name stored for that person.

Where the country allows it, texts show your company name as the sender, and they can go out at a set time with an unsubscribe link. A report shows the delivery state of each message as it changes. A call nobody picks up is tried again until someone answers or 48 hours have passed. The site counts more than 10,000 clients and 1.5 million texts sent each month.

Some messages may later matter in a dispute, and certified SMS and certified email cover that case. Each one comes with a certificate stating the content, the number, the sending time and the delivery time. The site says this has the same validity as a burofax, a Spanish registered letter with proof of content. Contracts can also go out for a handwritten signature on the recipient's screen.

Developers send the same messages from their own software through an API, with code samples in PHP, Python, Swift, Delphi and other languages. A lookup checks whether a mobile number is still active before a campaign goes out. Online shops on WooCommerce or Shopify connect through a plugin.