Open Doors
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SMS broadcasts

Send a one-off SMS to a segment.

4 min read Updated 2026-04-24
  1. 1
    Marketing → SMS → New Broadcast
    Pick the audience (smart list or tag).
  2. 2
    Write message
    Under 160 chars keeps it as a single segment; over, it splits and costs more per send.
  3. 3
    Personalise with merge fields
    {{contact.first_name}} etc.
  4. 4
    Add opt-out
    Open Doors auto-appends "Reply STOP to opt out" unless already in the body.
  5. 5
    Schedule
    Respect time zones — late-night SMS tanks your reputation.