صوتك مهم. أخبرنا عن وضعك واحصل على 100 دج رصيد هاتفي. 3 دقائق فقط.
Your voice matters. Tell us about your situation, get 100 DA mobile credit. 3 minutes.
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صوتك يُغيّر
Your voice changes things
Tabarru — تبرع
messenger.com
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Amina, Youssef and 847 others
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Scenes 2–6 — Full Messenger thread (tap "Send Message" above to jump here)
9:41
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T
Tabarru
Active now
Today at 9:41 AM
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مرحباً بك في تبرع 👋
Welcome to Tabarru. We're a small team listening to people on the move. Choose your language to continue.
9:41 AM
English
9:41 AM
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Quick verification — we'll send a 6-digit code to your phone.
We don't store your number. We just need to confirm you're a real person to send the top-up.
🇩🇿 +213
Your number is used only for verification and top-up delivery
+213 7XX XXX XX
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Code sent ✓ — enter the 6 digits below:
123456
✅Identity verified. Your responses are anonymous — we only keep your answers, not your number.
9:42 AM
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1/5 — How safe do you feel where you are now?
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2/5 — Where are you currently located?
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3/5 — What's your biggest concern this week?
Type your answer — or tap the mic to send a voice note 🎙️
Type a reply…
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0:18
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Got it, thanks for sharing. Two more quick ones 👇
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4/5 — Which of these have you experienced in the past month? Select all that apply.
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5/5 — Rate how helpful Tabarru has been so far:
9:46 AM
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Done! Thank you for sharing. 🙏 Your 100 DA top-up is on its way — should arrive in ~2 minutes.
Mobile top-up
+100 DA
✓ Delivered to +213•••••12
via Tabarru Rewards · 9:46 AM
📱✓ Top-up of 100 DA received on +213•••••12
9:46 AM
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Want to hear when there's news about migration safety, border updates, or new help available?
Reply YES to subscribe — or just ignore this message 👇
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Subscribed. We'll send updates via Messenger template messages (at most weekly). You can unsubscribe any time.
Aa
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24-hour engagement window (FEP): The moment the user taps "Send Message" on the Facebook ad, Messenger's 24-hour Free Entry Point window opens. Within this window, the bot can send any message — unlimited, free, no template approval needed. After 24 hours with no user reply, outbound messages require a pre-approved Message Template (Messenger's equivalent of WhatsApp HSM), typically costing $0.01–0.03/message. Subscribing YES above allows Tabarru to re-open via templates — critical for longitudinal panel re-engagement.
✓Lowest friction onboarding — zero accounts, zero app installs. User is already in Facebook; one tap opens the thread.
✓Familiar surface — Messenger UI is deeply recognisable. No learning curve; quick-reply chips feel native and obvious.
✓Free for the user (zero-rated) — Facebook is zero-rated on most Algerian SIM cards. Respondents in data-poor situations can participate without mobile credit cost.
✓Click-to-Messenger ad targeting — Facebook's ad targeting (location, language, interest) is unmatched for reaching specific migration corridors.
✗24-hour window = hard ceiling on longitudinal engagement — after 24h silence, every outbound message requires a paid, pre-approved template. Longitudinal panels must budget for this or rely on re-ad re-entry.
✗Limited quick-reply capacity — Messenger shows max 3 quick-reply chips in the visible area before horizontal scroll. Designing survey branches that fit this constraint takes care.
✗Mali / Sahel penetration: ~0.8% — Facebook Messenger is strong in North Africa (Algeria, Morocco) but very thin in Mali, Burkina Faso, and across the Sahel. Origin-country panels will be skewed toward the digital minority.
✗Voice notes stay in chat layer — voice note input works perfectly as a free-form Q3 answer, but it cannot be embedded inline in a structured template message. Voice panel data lives as audio attachments, not structured fields — requires a separate transcription pipeline.
✗No end-to-end encryption by default — standard Messenger threads are not E2E encrypted (unlike WhatsApp). For sensitive protection-related surveys, this is a significant concern requiring explicit respondent disclosure.