Why Your Bit.ly Links Get Your Ecommerce Texts Blocked
You sent a 20%-off blast to 8,000 opted-in customers. The dashboard says "delivered." Revenue says otherwise — far fewer clicks than your last send, and the abandoned-cart flow that used to convert is suddenly limp. Nothing changed in your copy, your offer, or your list hygiene. What changed is the link.
Full disclosure: I work for ReadySMS, so I spend a lot of time staring at delivery logs. The single most common avoidable cause of "delivered but dead" ecommerce SMS is a public URL shortener — bit.ly, tinyurl, ow.ly, and friends — sitting in the middle of your text. Carriers treat those domains as a spam fingerprint, and the filtering is mostly invisible. Your platform marks the message sent. The carrier quietly drops it or strips the link. You never get an error.
How carrier filtering actually decides what gets through
A2P (application-to-person) SMS rides through carrier spam filters before it reaches a handset. Those filters score every message on a pile of signals: send velocity, content keywords, opt-out ratio, and — heavily — the URLs inside the body. The link is one of the easiest things to fingerprint because it's a literal, machine-readable string.
Public shorteners fail this scoring for a structural reason: the same domain is shared by everyone. When bit.ly/xyz123 could resolve to your discount page or to a phishing site or to a crypto scam, the carrier can't trust the domain — only the specific link, which it's never seen. So it leans toward suspicion. A million spam texts a day route through public shorteners, and the filters have learned that pattern cold.
This is the same problem as sharing a phone number with hundreds of other senders — reputation pooled across strangers, dragged down by the worst of them. If you've read why a shared 10DLC number gets filtered, the link version is the exact same logic applied to your URL.
What "filtered" looks like from your seat
- Delivery receipts say delivered, but click-through craters versus historical baseline.
- A/B tests where the only difference is link domain show wild gaps.
- Certain carriers (one major US carrier is notably aggressive) underperform others on the same blast.
- Revenue-per-send drifts down over weeks as your shortener domain accumulates more spam association.
If you're chasing this with copy tweaks, you're optimizing the wrong variable. Pull the link first.
Why this hits ecommerce harder than anyone
Ecommerce SMS is almost always a link. A flash-sale text without a tappable URL is just an announcement. So the deliverability tax on bad links lands squarely on the messages that make you money — promos, restocks, cart recovery, BFCM blasts. Transactional confirmations matter too, but it's the marketing sends that get scrutinized hardest and lean most on links.
It compounds with volume. A 70-character emoji promo already costs you more than you think — see the emoji tax breakdown — and now imagine paying for three segments per message on a send that's getting silently filtered. You're paying full freight for messages that never convert.
Branded short domains: the actual fix
A branded short domain is a short link on a domain you own and route. Instead of bit.ly/abc, your customer sees shop.yourbrand.co/spring or go.yourbrand.com/r/4f9. The reputation attached to that link belongs to you alone. Spammers aren't using go.yourbrand.com, so the carrier has nothing bad to associate with it.
Three things make it survive filtering:
- Isolated reputation. Your domain's score reflects your sending behavior, not a global pool of scammers.
- Brand consistency. When the link domain matches the sender brand on your 10DLC registration, the message reads as coherent to the filter — and to the human.
- No redirect-chain red flags. Public shorteners often pile on tracking redirects; a tight branded redirect looks cleaner.
There's a softer benefit too: customers trust a link that says your store name. A bare tinyurl in a discount text reads like phishing to a careful shopper. Your own domain reads like you.
Public vs. branded, side by side
| Factor | Public shortener (bit.ly, tinyurl) | Branded short domain (go.yourbrand.com) |
|---|---|---|
| Domain reputation | Shared with all senders, incl. spammers | Yours alone |
| Carrier filter risk | High — known spam fingerprint | Low — clean, unrecognized = neutral-to-trusted |
| Customer trust | Looks generic / phishy | Matches your brand |
| Setup cost | Free | Domain (~$10–20/yr) + a little DNS |
| Ongoing control | None — provider can disable links | Full control of routing and analytics |
| Brand-to-10DLC match | None | Reinforces registered brand identity |
The cost column is the punchline. The fix is a domain you probably could've registered for the price of a coffee, plus twenty minutes of DNS.
How to set one up
You don't need to be a developer. The flow:
- Register a short domain or subdomain. A short root like
yourbrnd.coworks, or a subdomain off your main store —go.yourbrand.com,s.yourbrand.com. Subdomains are free if you already own the apex. - Point it at a link-shortening service that supports custom domains. Plenty of paid shorteners and link-management tools let you bring your own domain; you set a CNAME or A record in DNS and verify it.
- Generate links on that domain for every campaign and flow — promos, cart recovery, order tracking, the lot.
- Warm it gently. A brand-new domain isn't trusted yet; it's neutral. Don't blast a million sends through a day-old domain. Ramp volume over a couple weeks so its reputation builds on good behavior, not a cold spike.
- Keep the domain consistent. Don't rotate between five short domains to dodge anything — that is a spam pattern. One domain, used cleanly, forever.
If you run on GoHighLevel, you can store branded links in your templates and snippets so every flow uses them by default. Our GHL setup guide walks the integration mechanics; the link discipline rides on top of it.
Links are necessary, but not sufficient
Fixing the domain won't rescue a fundamentally bad send. Carrier filtering scores the whole message. A clean branded link inside a text that screams "FREE!!! CLICK NOW 🤑🤑" to a list with a 4% opt-out rate is still going to struggle. Deliverability is a system:
- Registered 10DLC with a brand and campaign that match what you actually send. (What 10DLC is.)
- Clean consent and opt-out handling so your opt-out ratio stays low. ReadySMS honors inbound STOP automatically and propagates the opt-out across campaigns, which protects your sender reputation.
- Sane content — avoid the obvious spam-trigger phrasing and excessive symbols.
- Branded links — the topic of this post.
Get all four right and your "delivered" number starts matching your revenue number again.
The practical takeaway
If your ecommerce promo and cart-recovery texts are underperforming for no obvious reason, audit the link before you touch anything else. A public shortener is a shared-reputation liability dropped right into the part of the message that earns you money. Swapping it for a branded short domain costs roughly a domain registration plus a DNS record, and it removes one of the loudest spam signals carriers look for.
Register a short domain this week, route every campaign link through it, ramp volume gently, and watch click-through against your historical baseline. If the gap closes, the link was the problem all along.
If you want to see how the rest of the deliverability stack — 10DLC registration, automatic opt-out handling, litigator scrubbing — fits together, our 10DLC compliance guide for ecommerce is the next thing to read. And if you're sizing the cost of all this against send volume, the cost calculator will give you real per-segment numbers to plan against.