SMS Templates
Reusable plain-text messages with {{variables}}, published before use.
SMS templates are plain text with the same {{variable}} merge fields as email templates — {{first_name}} and your custom contact fields resolve per recipient at send time, and a send fails closed rather than shipping a literal token. The editor shows the live segment count as you type (160 GSM-7 characters per segment; 70 for Unicode). New to the channel? Start with SMS vs email.
Templates start as drafts; publish one to use it in sends and campaigns. For marketing messages, end with an opt-out hint like "Reply STOP to opt out" — STOP is honored automatically either way.