Syften, Notikey, and Brand24 ship custom webhook destinations that POST a JSON payload to your endpoint within 30-60 seconds of a brand mention firing. You own routing to Zendesk, HubSpot, or your internal triage queue from there.
Webhook mentions feed automation, not humans. Customer support pipelines them into Zendesk as new tickets, sales pipelines them into HubSpot as contacts, and growth teams pipeline them into a tagged dashboard for trend analysis. The webhook is the source of truth; Slack is downstream.
Build an HTTPS endpoint at /api/reddit-mention. Use Vercel, Cloudflare Workers, or any Node or Go service.
Add HMAC SHA-256 signature verification using a shared secret. Reject any request whose X-Signature header does not match the computed HMAC of the body.
In Syften (or your tool) add a Webhook destination, paste the URL, paste the HMAC secret, and route only brand-variant rules to this webhook (not generic keyword rules which should go elsewhere).
Implement a router: parse the payload, decide downstream destination based on sentiment (Brand24 includes a sentiment field), subreddit, or keyword. Negative plus r/legaladvice fires a Slack PagerDuty; positive plus r/dataengineering opens a HubSpot contact.
Add dedupe via Redis SET with NX EX 2592000 keyed on the Reddit permalink. Same permalink within 30 days returns a 200 and is dropped.
Add observability. Log every incoming webhook to BetterStack or Datadog with the permalink, sentiment, and downstream action taken. Without logs, debugging dropped mentions is a nightmare.
Real payload shape for Webhook. Paste this into your handler to test the integration without waiting for a live match.
POST https://api.yourcompany.com/webhooks/reddit-mention
X-Signature: sha256=4f8a9b2c3d1e5f6a7b8c9d0e1f2a3b4c5d6e7f8a9b0c1d2e3f4a5b6c7d8e9f0a
Content-Type: application/json
{
"event": "mention.detected",
"timestamp": "2026-05-25T14:47:09Z",
"brand": "Quillbot",
"sentiment": "negative",
"sentiment_score": -0.62,
"match": {
"type": "post",
"id": "t3_kabc789",
"permalink": "https://reddit.com/r/writing/comments/abc123/quillbot_keeps_mangling",
"subreddit": "writing",
"subreddit_subscribers": 3200000,
"author": "u/techwriter_42",
"author_karma": 4821,
"title": "Quillbot keeps mangling my technical documents",
"body": "I've been using Quillbot Premium for 6 months...",
"score": 23,
"num_comments": 12,
"created_utc": 1748186829
},
"delivery_id": "d_8b3e9f1c"
}A devtools company piped Syften brand mentions into HubSpot as contacts tagged source: reddit-mention. Their AE outreach to those contacts had a 14% reply rate vs 3% for cold lists.
An ecommerce brand piped negative Brand24 mentions to a Zendesk webhook that auto-created tickets tagged reddit-complaint. Support resolution time dropped from 36h to 8h once the team stopped manually copying threads.
A SaaS PM piped Notikey webhooks into Linear under the team-feedback project, auto-tagging by mentioned competitor. Quarterly product reviews now reference 100+ Reddit threads instead of anecdote.
MediaFast's Opportunity Finder scores Reddit threads by intent and pipes the high-signal ones to your channel of choice. No multi-tool setup.
HMAC-signed webhooks, sub-60-second delivery, Reddit-native. Starts $19/mo.
bearer-token webhooks, sentiment field included, Reddit-focused. Starts $24/mo.
webhook on Pro and Enterprise tiers, sentiment plus reach scoring. $99/mo and up.
webhook support on Company plan and above. $99/mo and up.
webhook delivery on paid plan, includes intent scoring per match.
Engineering-led teams routing brand mentions into Zendesk, HubSpot, Linear, or a custom triage dashboard.
Webhook brand mentions are $19/mo (Syften) to $99/mo+ (Brand24, Mention). Sentiment scoring usually starts at the $99 tier.
Pick a different channel or alert type and read the matched guide.
If you would rather skip the tool stack and just get the high-intent Reddit threads delivered, MediaFast ships an Opportunity Finder that scores threads by buying intent and pushes them to email or webhook. It sits in the same category as the tools listed above and stays competitive on price.
The questions teams actually ask before wiring this up.
Use HMAC SHA-256 signature verification. Syften signs every webhook with a shared secret, sends the signature in X-Syften-Signature. Your handler computes the same HMAC over the raw body and rejects requests where the signatures do not match. Use crypto.timingSafeEqual to compare.
Syften retries with exponential backoff for up to 24 hours. Notikey retries 3 times over 15 minutes then drops. Brand24 retries up to 6 hours. None replay missed events after their retry window expires, so monitor endpoint health and set up dead-letter handling.
Yes from Brand24 (production-grade), Notikey (decent), and Mention (older engine, less accurate). Syften does not ship sentiment natively; pipe to your own classifier (OpenAI or Anthropic API call) on receive if you need it.
Hash the Reddit permalink (canonical URL form: https://reddit.com/r/SUB/comments/ID) and store in Redis or a DB with a 30-day TTL. Same permalink from a second tool returns 200 no-op. This is the only reliable cross-tool dedupe.
MediaFast's Opportunity Finder pulls Reddit posts where your product solves a stated problem and scores them by buying intent. One tool, no glue code.
Try Opportunity Finder