# A Bigger Text List Helps on Black Friday Only With Proven Consent Canonical page: https://sunlocke.com/articles/grow-sms-list-before-black-friday Page type: article ## Summary The weeks before Black Friday are the right time to grow a text list, if every signup carries the right disclosures, a confirmation text, and a record you can produce later. A bigger text list is only an asset if every number on it came with permission you can show. The signup is where that gets decided. A bigger text list helps on Black Friday only if every number came with permission you can prove. The signup is where that is decided, and finishing by mid November leaves time to test before the weekend. Sources * [CTIA: Messaging Principles and Best Practices, May 2023](https://api.ctia.org/wp-content/uploads/2023/05/230523-CTIA-Messaging-Principles-and-Best-Practices-FINAL.pdf) * [Twilio Docs: Error 30924, campaign rejected for missing or noncompliant consent language](https://www.twilio.com/docs/api/errors/30924) * [eCFR: 47 CFR 64.1200, Delivery restrictions](https://www.ecfr.gov/current/title-47/chapter-I/subchapter-B/part-64/subpart-L/section-64.1200) * [Google Search Central: Avoid int ## Article details A bigger text list is only an asset if every number on it came with permission you can show. The signup is where that gets decided. ## Main point A bigger text list helps on Black Friday only if every number came with permission you can prove. The signup is where that is decided, and finishing by mid November leaves time to test before the weekend. Author: Chris Martinez Section: Strategy Post type: Playbook Story format: standard ## Article content Every signup for an SMS list has to show its disclosures at the moment someone agrees and trigger a confirmation text before any other message. Before Black Friday there is a second deadline. Each new signup path should match the 10DLC registration on file with your texting platform and be tested on a real phone by about November 20, a week before the busiest weekend of the year. Those disclosures come from carrier guidance and federal consent rules, which [the SMS marketing rules article](/articles/sms-marketing-rules) explains in full. Outside the holiday rush, [building a text list legally](/articles/how-to-build-an-sms-list) follows the same steps at a slower pace. ## Why the deadline is earlier than Black Friday Black Friday falls on November 27, 2026. A text list that grows during Thanksgiving week is of little use that weekend, for three reasons. First, every new subscriber should receive a confirmation text before any other message. CTIA, the wireless industry association whose Messaging Principles and Best Practices carriers apply, expects that confirmation to come first. A signup flow that has never been tested end to end tends to fail at exactly this step. Second, business texting from ordinary ten digit numbers requires 10DLC registration, a carrier sign up that describes the business, what it will text, and how people opt in. Twilio, a large texting provider, says carriers reject a registration unless people are told what messages they will get before they agree, and its checklist asks for that wording at or right next to the checkbox or button. A new signup path that the registered campaign does not describe is a mismatch between your record and your practice. Adding one is a registration task as much as a marketing task, and approval is not instant. Third, people who join in October and early November have a chance to receive one or two useful texts before the sale. The [holiday email and SMS plan](/articles/holiday-email-and-sms-plan) places that invitation in the week of November 9 for this reason, and existing email subscribers are the warmest audience for it. ## Choose an offer you can deliver in the confirmation text People join a text list for a specific reason. Before Black Friday, this guide favors access over a discount: first look at the sale, a reserved preorder slot, early pickup times, or a product held back for subscribers. That preference is a judgment, not a tested result. Its logic is that a discount spends margin on every signup, including people who would have bought anyway, while access costs nothing to give, expires on its own, and gives the first Black Friday text a job. A discount for joining also works, and it can sit inside the confirmation text, which is the one message every subscriber receives. What the offer cannot do is make a purchase depend on agreeing. Federal rules require marketing text consent forms to disclose that agreeing is not a condition of buying anything. The reward is for joining the list; the checkout works the same with or without it. Suppose a bakery, a hypothetical one, sells holiday pies for pickup. Its offer is "Text list members choose their pickup slot one day before everyone else." The offer is specific, it expires on its own, and the bakery can keep it. If the bakery cannot hold those slots, the first text after Black Friday will be an apology. ## Four places to ask, and what each one has to show CTIA's principles list what a call to action should make clear before someone opts in. Every signup point should show: * What the texts are about. * The number or short code (a five or six digit number) they come from. * Who is sending. * Any fees. * How to opt out. * How to get help. * Where to find the privacy policy. CTIA's consent table expects express written consent for promotional texts, which can be a signed form, a box checked online, or another written agreement. Twilio adds that carriers look for message type, message frequency, a statement that message and data rates may apply, and opt out instructions in the consent language. Those elements show up differently at each signup point, and the exact form wording is the subject of [what a compliant SMS opt in looks like](/articles/sms-opt-in-requirements). ### A website form The form needs its own phone field and its own consent language, placed beside the button that submits it. A combined "sign up for emails and texts" box with one checkbox makes it unclear what the person agreed to. Keep the text consent separate. On mobile, resist the full screen popup. Google's guidance on intrusive interstitials tells site owners not to obscure the entire page with promotional overlays and recommends small banners instead. An inline form on the product page, or a banner that does not cover the content, collects signups without fighting the page. ### A checkbox at checkout Checkout is where most stores already ask for a phone number, which is why it is also where mistakes are easiest to make. That number was given for order updates. CTIA treats an opt in as applying only to the campaign it was collected for, and it separates informational messages, such as shipping updates, from promotional ones. A separate checkbox, unchecked until the customer checks it, with the full disclosure beside it, is the clean version. A box checked by default is weak evidence that anyone agreed to anything. ### A keyword in the store or on packaging "Text JOIN to" a number is easy for customers and easy to get wrong. The sign, the counter card, or the packing slip is the call to action, so it has to carry the disclosures itself, not just the keyword. [The SMS marketing rules article](/articles/sms-marketing-rules) describes a federal court ruling in Delaware, issued in December 2025 and amended in April 2026, that turned on what a subscriber saw before texting a keyword, which is a good reason to photograph every sign you print and keep the photo with its dates. ### A link from your other channels Social posts and the order confirmation page can link to the website form. Send people to the form rather than collecting numbers in comments or direct messages, where the disclosure and the record are both missing. ## The confirmation text is your first message CTIA lists what the confirmation should contain: the program name or description, how to get help, how to opt out, a statement that messages recur and how often, and any charges. A hypothetical version for the bakery reads: "Your Bakery: You joined holiday texts. Up to 6 msgs per month. Msg and data rates may apply. Reply HELP for help, STOP to cancel. Your early pickup link arrives Nov 20." Choose the frequency in that message carefully, because it is the number you are now promising. Write it for the season you are actually planning, including a Black Friday weekend whose arithmetic [how many Black Friday texts to send](/articles/black-friday-sms-frequency) works through, and not for a quiet month. The confirmation also settles the double opt in question. Neither CTIA's Messaging Principles nor the FCC's definition of written consent names double opt in as a requirement. A keyword signup works in two steps anyway, because the confirmation text goes out after the person's own message. For web forms, the confirmation text plus a stored record of the form is the practical standard. ## Keep a record you could hand to a carrier or a lawyer CTIA lists what to retain for each opt in: the time it happened, the method, a capture of the language and action used, the campaign it was for, the IP address where it applies, the phone number, and who consented. Most texting platforms store the first several automatically for web forms. They do not store what your printed sign said, or which version of the checkout wording was live on November 2. Keep a dated screenshot of every form and checkbox each time the wording changes, a photo of every printed keyword sign, and a note of where each one was used. Then test each path on a staff phone: sign up, confirm the confirmation text arrives with every element, reply STOP, and confirm the number stops receiving texts. That last step is the one affected by the opt out changes the FCC adopted on September 30, 2026, and [how SMS opt outs work](/articles/sms-opt-out-requirements) tracks where those changes stand. ## Numbers that cannot go on the list Some of the fastest ways to grow a list are the ones that create the most risk. * Phone numbers from past orders, receipts, or appointment bookings were given for those purposes. They can be invited to join through a proper signup. They cannot be added. * A purchased, rented, or shared list. CTIA says message senders should not use opt in lists that were rented, sold, or shared, and should build their own. * Numbers a partner or vendor collected for you, unless a lawyer has reviewed how consent was gathered and in whose name. A list built only from signups is smaller than the customer database, and every number on it comes with a record of what the person agreed to. ### Frequently asked questions #### Is it too late to start SMS marketing for Black Friday? Not in early November, but the margin is thin. A new local number needs 10DLC registration, the carrier sign up for business texts from ordinary numbers, and Twilio puts campaign review at 10 to 15 days in one guide and two to three weeks in another. New subscribers also need the confirmation text and a useful message or two before the sale, with every signup path tested on a real phone by about November 20. Launching texting for the first time in Thanksgiving week leaves no time to fix mistakes. #### Do I need a short code for Black Friday texting? Not for a small list, given the price. A short code, the five or six digit number built for high volume programs, costs far more than a local or toll free number: Twilio lists a random one at $1,000 a month, billed quarterly, and Postscript passes through the carriers' $750 monthly charge. Twilio rents a local number for $1.15 a month and a toll free one for $2.15. Postscript and Klaviyo start every account on a toll free number, which still needs carrier verification. #### Do SMS platforms charge more for a bigger list? Attentive does, by its own description, and on per message billing every campaign to a bigger list costs more. Attentive's pricing page says its text plan charges per message and per subscriber. Postscript's pricing page says it charges no profile fees and bills by the text. At Postscript's Starter prices, one more text to 3,000 subscribers costs about $37, and a subscriber who stopped reading the texts costs as much to reach as one who buys. #### How many texts a month should my SMS signup promise before Black Friday? Enough to cover November as actually planned, because the number in the confirmation text is the ceiling. CTIA, whose guidance carriers apply, lists message frequency among what that confirmation should disclose. In one worked example, a store promising up to 4 texts a month plans an early access text, a reminder and three weekend texts: five in November. Changing the promise later covers only new signups, and a sample bakery confirmation promises up to 6 a month. Source: CTIA: Messaging Principles and Best Practices, May 2023 Industry guidance, not law. Consent table expecting express written consent for promotional texts (section 5.1), call to action contents (5.1.1), opt in methods and records to retain (5.1.2), confirmation message contents sent before other messages (5.1.2.1), one opt in per campaign (5.1.2.2), no rented, sold, or shared lists (5.1.4), privacy policy referenced from the call to action (5.2.1). Read in full on October 13, 2026. Reference: https://api.ctia.org/wp-content/uploads/2023/05/230523-CTIA-Messaging-Principles-and-Best-Practices-FINAL.pdf Source: Twilio Docs: Error 30924, campaign rejected for missing or noncompliant consent language Carriers require consumers to be told what messages they will receive before consenting; consent language at or immediately adjacent to the checkbox or button; message type, frequency, message and data rates, and opt out instructions. Platform documentation, checked October 13, 2026. Reference: https://www.twilio.com/docs/api/errors/30924 Source: eCFR: 47 CFR 64.1200, Delivery restrictions Definition of prior express written consent at paragraph (f)(9), including the disclosure that agreeing is not a condition of purchase. Version current through October 1, 2026, as verified for the SMS rules article. Reference: https://www.ecfr.gov/current/title-47/chapter-I/subchapter-B/part-64/subpart-L/section-64.1200 Source: Google Search Central: Avoid intrusive interstitials and dialogs Do not obscure the entire page with interstitials; prefer small banners. Last updated December 10, 2025; checked October 13, 2026. Reference: https://developers.google.com/search/docs/appearance/avoid-intrusive-interstitials Source: The Campaign Registry 10DLC brand and campaign registration through campaign service providers. Reference: https://www.campaignregistry.com/ ## Structured sections Sources * [CTIA: Messaging Principles and Best Practices, May 2023](https://api.ctia.org/wp-content/uploads/2023/05/230523-CTIA-Messaging-Principles-and-Best-Practices-FINAL.pdf) * [Twilio Docs: Error 30924, campaign rejected for missing or noncompliant consent language](https://www.twilio.com/docs/api/errors/30924) * [eCFR: 47 CFR 64.1200, Delivery restrictions](https://www.ecfr.gov/current/title-47/chapter-I/subchapter-B/part-64/subpart-L/section-64.1200) * [Google Search Central: Avoid intrusive interstitials and dialogs](https://developers.google.com/search/docs/appearance/avoid-intrusive-interstitials) * [The Campaign Registry](https://www.campaignregistry.com/) ## Related services * [Email & SMS Marketing](/email-sms): Follow-up that runs while you work