Never Put a Link in Your First Text

Why the link in your first text does not open#

Apple disables links in messages from unknown senders, and it puts the fix on the reader rather than the sender: if you can't open a link sent by an unknown sender, make them a known sender.

Nothing on your side switches that off (support.apple.com/guide/iphone/screen-filter-report-and-block-texts-iph203ab0be4/ios, seen 21 August 2026). The decision sits on the handset, after delivery.

Screening is not on for everyone, so this shows up as a soft number rather than a hard zero. Apple says Screen Unknown Senders ships off by default in iOS 26 (support.apple.com/en-us/125068, seen 21 Aug 2026).

• Anyone who had Filter Unknown Senders switched on under iOS 18 keeps it switched on after upgrading, per that same Apple page, so the affected share of your list is neither zero nor everyone.
• Your sending dashboard cannot tell you who has it on. Delivered means delivered, not seen, and certainly not clickable.
• A first-touch step with a click rate near zero is the platform working as designed. Teams rewrite the offer four times chasing a number that was never available.
• Any measurement of message one that runs on clicks is scoring a feature Apple removed for part of your audience.

What makes someone a known sender#

Apple defines an unknown sender as anyone the recipient has not previously interacted with in Messages, or who is not saved in their contacts (support.apple.com/en-us/125068, seen 21 August 2026).

That status is per relationship, not per brand. A company someone already buys from is an unknown sender the first time it texts from a new number, and a stranger stops being one the second they reply.

Three routes lead out of the unknown list and only one is available to you. The recipient can tap Mark as Known, save you as a contact, or reply. The reply is the only door you get to knock on.

• A reply turns the link on. The same URL that would not open in message one opens normally once the thread is two-sided.
• A reply moves the conversation into the main list, with notifications, for every recipient who had screening enabled.
• Apple notes that text message filtering does not apply to any sender the recipient has replied to three times or more, so filtering keeps a memory that counts in your favour.
• Until you are marked known or saved as a contact, Apple keeps filtering your future messages into Unknown Senders.
• None of this transfers to a new number. Standing is earned per line and per relationship, which is the real cost of cycling numbers.

Green bubble, same problem, different cause#

Carrier SMS has no unknown-sender concept and punishes the link anyway. Telnyx publishes error 40321 as URL blocked by carrier (developers.telnyx.com/docs/messaging/10dlc/troubleshooting, seen 21 Aug 2026).

The same page lists aggressive URL filtering among the content-filtering causes and names public shorteners, bit.ly and tinyurl by name, as the pattern to avoid. Its recommended fix is a branded short link.

A shortener is a shared domain, so its reputation is the sum of everyone who ever used it. On iMessage a dead link still arrives. On 10DLC a flagged URL can take the whole message down with it.

What the first message should carry instead#

Outbound teams that get replies on message one send something a person can answer in five words without leaving the thread. That is the entire brief.

An opener is not a pitch with the link taken out. A pitch that has lost its call to action is a paragraph about you. Make it a question with a real answer, sent to someone with a reason to hold an opinion.

• No link. Not a tracked one, not a calendar one, not a shortened one, not your homepage.
• No attachment as the opener. Send plain text first and hold the image, PDF or voice note until after the reply.
• One question, answerable in a few words, that does not need a click to answer.
• Name the specific reason you are texting this person. A message that could have gone to four thousand people reads like it did.
• Keep it short enough to read from a lock screen preview, because for some recipients the preview is all they will see.
• Say who you are and what company you are with inside the message. There is no contact card for you, so the number is all they have.

Rebuilding a sequence that assumes the link works#

CRM sequences carry the link in step one by default, because they were designed for email, where the click is the only signal available and nothing at the receiving end disables it.

Porting that structure onto a messaging channel imports an assumption that stopped being true. The rebuild is small, and most of it is splitting one step into two.

• Audit every template whose first step contains a URL, including the ones a rep pastes by hand. Manual sends are where the link survives a cleanup.
• Split step one into an opener that asks and a follow-up that delivers. The link lives in the follow-up.
• Gate the link step on an inbound reply rather than a timer, so a URL only ever goes into a thread that is already two-sided.
• Change the success metric on step one from click rate to reply rate. Click rate on an opener is not a weak signal, it is an unavailable one.
• Keep tracked and shortened links off the opener on every channel, and use a branded domain matching your registered brand wherever you do send them.
• Brief the reps. A rep watching a prospect open the thread and not click will send the link again, which is the one action the platform is telling you not to take.

Where a dedicated iMessage line changes the math#

Blue Reacher lines start out as unknown senders too, and pretending otherwise would be dishonest. Apple enforces this on the recipient's handset, so it lands on every provider in the category identically.

Tuco AI publishes the same constraint on its own limitations page, noting links are not clickable on a first-ever message until the lead replies (tuco.ai/limitations, seen 21 August 2026).

What a dedicated line changes is what the reply is worth. A thread that starts on iMessage carries every later message at known-sender status, which is why reply rate on the opener is the number to optimise.

What this changes about registration and consent#

An iMessage line needs no A2P registration, so no brand record, campaign review or carrier URL filter sits between your second message and the person who just asked you a question.

Contacts who cannot receive iMessage still get the message over RCS and then SMS automatically. A link in that fallback faces carrier filtering like any other SMS link, which is why the branded domain matters everywhere.

Consent law does not move an inch. TCPA obligations, opt-out handling and record-keeping apply on iMessage exactly as on a green-bubble text. What moves is how many systems get a vote on whether your link opens.

Frequently asked questions