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SlickText alternatives, and the safeguards to rebuild when you leave

6 alternatives and the baseline7-item switch checklistVendor claims read 2026-10-22

For the owner or marketer who texts customers from SlickText and is weighing a move. SlickText does several compliance jobs quietly: it reads plain-word opt-outs, appends a compliance line to every welcome text, answersHELP and forces double opt-in on forms. A new tool may do none of that until you set it up. Below, SlickText and six alternatives on the nine texting rows, then a checklist of what to rebuild and the gaps a switch can close. Every vendor page was read on 2026-10-22; more side-by-sides sit in the comparisons index.

Verdict by use case

Best overall

Klaviyo

It keeps what SlickText does best, a reader that opts out replies like "remove me", and switches it on by default. It adds what SlickText's pages do not show: a consent timestamp you can export and campaign quiet hours checked per recipient.

Verdict

Best for Shopify stores

Postscript

Its opt-out screen catches "take me off this list" and "wrong number", and no number joins without a confirmed reply or on-site code. Campaigns and automations wait for waking hours where each subscriber is.

Verdict

Best for a local number and keywords

SimpleTexting

The closest match to SlickText's keyword-and-campaign shape, with an opt-in date and source on every contact and 10DLC registration inside the app. Plan to read the inbox for plain-word opt-outs yourself.

Verdict

Photomontage of a phone in a van dashboard mount, seen from behind on putty with an oxblood diagonal and a slate block
Fig. 01 A phone in a van's dashboard mount, screen turned away

Seven tools, nine texting rows

The rows are the texting requirements every page in the Texting pillar uses, from the FCC's rule (47 CFR § 64.1200) and CTIA's messaging guidelines. Here they run in the order a SlickText user feels them: the four jobs SlickText does for you first, then the four its own pages leave open or answer "No", then do-not-call scrubbing. SlickText is the first column; "Our pick" marks the best-overall verdict.

SlickText and six alternatives against nine texting requirements
RequirementSlickTextOur pickKlaviyoPostscriptOmnisendAttentiveSimpleTextingEZ Texting
Honours STOP and plain-language revocation automaticallyYesYesYesYesNoCheck with the vendorCheck with the vendor
Sends the opt-in confirmation (program, HELP, STOP, frequency, rates)YesYesYesCheck with the vendorYesYesYes
HELP auto-replyYesYesCheck with the vendorCheck with the vendorCheck with the vendorYesCheck with the vendor
Double opt-in availableYesYesYesNoYesYesYes
Records opt-in with a timestamp and the numberCheck with the vendorYesYesYesYesYesCheck with the vendor
Consent records exportableCheck with the vendorYesCheck with the vendorYesCheck with the vendorCheck with the vendorCheck with the vendor
Quiet-hours window by the recipient's time zoneNoYesYesYesYesNoNo
10DLC brand and campaign registration in-productNoNoCheck with the vendorCheck with the vendorCheck with the vendorYesYes
National and state DNC scrubbingCheck with the vendorCheck with the vendorCheck with the vendorCheck with the vendorCheck with the vendorCheck with the vendorCheck with the vendor

Honours STOP and plain-language revocation automatically
The FCC rule names seven reply words and also counts any reply a reasonable person reads as a revocation.47 CFR § 64.1200(a)(10)
Sends the opt-in confirmation (program, HELP, STOP, frequency, rates)
CTIA lists five things a recurring programme's confirmation text should carry.CTIA Messaging Principles and Best Practices (May 2023), 5.1.2.1
HELP auto-reply
CTIA's confirmation calls for customer care contact details or HELP instructions.CTIA Messaging Principles and Best Practices (May 2023), 5.1.2.1
Double opt-in available
A confirming reply ties the consent to the handset that will receive the texts.
Records opt-in with a timestamp and the number
CTIA asks senders to keep the date, time, number and the words used to secure consent.CTIA Messaging Principles and Best Practices (May 2023), 5.1.2
Consent records exportable
CTIA asks senders to retain every opt-in and opt-out so consent can be shown later.CTIA Messaging Principles and Best Practices (May 2023), 5.1.5
Quiet-hours window by the recipient's time zone
Telephone solicitations are barred before 8 a.m. or after 9 p.m. local time at the called party's location.47 CFR § 64.1200(c)(1)
10DLC brand and campaign registration in-product
US carriers route business texts on local numbers through registered brands and campaigns.
National and state DNC scrubbing
The safe harbor needs a registry copy obtained no more than 31 days before the call.47 CFR § 64.1200(c)(2)(i)(D)

What the table says

SlickText is strong on the top four rows and weak on the next four. Only three alternatives match it on the hardest one, catching an opt-out written in plain words: Klaviyo, Omnisend and Postscript, all three built for online stores. Attentive notices those replies but answers by asking the person to text STOP. SimpleTexting and EZ Texting document the fixed reply words only, so a person on your team has to catch the rest. The texting rules guide explains why that matters: the FCC counts any reply a reasonable person would read as a request to stop.

The store platforms also close SlickText's gaps: consent dates on the record and quiet hours by each recipient's clock. None of them documents a US local (10DLC) number: Klaviyo lists none, and Omnisend and Postscript describe toll-free numbers, which is also SlickText's default. If a local number matters to you, SimpleTexting and EZ Texting register one from inside the app (the 10DLC or toll-free guide weighs the two). No vendor's public pages settled do-not-call scrubbing.

Don't lose this when you switch

Seven things SlickText does for you, each read from its own help centre, with the rule that makes it worth keeping and what to set up in the new tool before the first send. Tick each one as it is rebuilt; Print gives you the list on one page. Where a safeguard maps onto a table row, the box under it shows which alternatives document the same.

What a switch can fix

Four rows where SlickText's own pages say "No" or say nothing. These are the reasons to move rather than the risks of moving. Check the first against your own list with the quiet hours checker, and see what 10DLC registration involves before you choose a number type.

Sends that wait for the recipient's clock

SlickText: Scheduled campaigns go out on the account's time zone: on an Eastern account, a 9 a.m. send reaches California at 6 a.m.

Yes
Klaviyo, Postscript, Omnisend, Attentive
No
SimpleTexting, EZ Texting

A stored time for each opt-in

SlickText: Contacts carry a status and how they joined (manual, import or keyword); a stored opt-in time is not described.

Yes
Klaviyo, Postscript, Omnisend, Attentive, SimpleTexting
Check with the vendor
EZ Texting

Consent dates in the export

SlickText: Contacts can be downloaded; which consent fields come with them is not listed.

Yes
Klaviyo, Omnisend
Check with the vendor
Postscript, Attentive, SimpleTexting, EZ Texting

A local number registered from the app

SlickText: Toll-free registers in the app; a 10DLC number goes through your SlickText representative or support.

Yes
SimpleTexting, EZ Texting
Check with the vendor
Postscript, Omnisend, Attentive
No
Klaviyo

Vendor by vendor

Each card repeats the table's rows with the detail from the vendor's own page. Three of the alternatives have comparisons of their own: SimpleTexting alternatives, Attentive alternatives and EZ Texting alternatives. For a Shopify store, the Shopify SMS app comparison adds the checkout-sync rows.

SlickText

slicktext.com

What it is

An SMS marketing platform for the US and Canada that assigns a free toll-free sending number and registers it from the app, with keywords, web forms, popups, workflows and a shared inbox. Its compliance settings hold the opt-in, opt-out and HELP wording, and its pricing page says every plan carries every feature.

Who it fits

The baseline on this page: the tool you would be moving from.

  • Honours STOP and plain-language revocation automaticallyYes

    Stop, unsubscribe, remove, cancel, end, quit and opt out always opt the contact out. Opt-Out Intelligence, switched on separately, reads every inbound text for intent; its action can opt the contact out or only reply with instructions.

  • Sends the opt-in confirmation (program, HELP, STOP, frequency, rates)Yes

    Required compliance wording is always appended to every opt-in auto-response, whichever sign-up tool the contact used.

  • HELP auto-replyYes

    A HELP reply with a link to your website and your email; it is one of the auto-responses you cannot edit.

  • Double opt-in availableYes

    Required for web forms and popups; a Force Double Opt-In setting extends it to keywords and bulk imports.

  • Records opt-in with a timestamp and the numberCheck with the vendor

    Each contact carries an opt-in status and a join source (manual, import or keyword); a stored opt-in time is not described.

  • Consent records exportableCheck with the vendor

    Contacts can be downloaded from the Contacts page; which consent fields come with them is not listed.

  • Quiet-hours window by the recipient's time zoneNo

    Scheduled campaigns deliver on the time zone of the SlickText account, not the recipient's.

  • 10DLC brand and campaign registration in-productNo

    The in-app form registers the default toll-free number; a 10DLC number goes through your SlickText representative or support.

  • National and state DNC scrubbingCheck with the vendor

Baseline

Klaviyo

klaviyo.com

What it is

An email and SMS marketing platform built around customer profiles, popular with online stores. Texting in the US runs on a toll-free number created when you set up SMS, or on a short code.

Who it fits

Stores that also send email and want the opt-out reader, consent timestamps and per-recipient quiet hours in one place.

  • Honours STOP and plain-language revocation automaticallyYes

    All seven FCC reply words opt out, and unsubscribe detection, on by default for US numbers, removes consent for replies like "remove me" or "do not contact". Klaviyo asks you to review its calls.

  • Sends the opt-in confirmation (program, HELP, STOP, frequency, rates)Yes

    The default confirmation names your organisation, HELP and STOP, the rates line and that frequency varies.

  • HELP auto-replyYes

    HELP and INFO get a reply with your organisation name and email.

  • Double opt-in availableYes

    Set per list and per keyword; a keyword's setting overrides the list's.

  • Records opt-in with a timestamp and the numberYes

    Each profile shows its SMS consent status, with a timestamp on the consent record.

  • Consent records exportableYes

    List and segment exports carry email and SMS consent status and the consent timestamp.

  • Quiet-hours window by the recipient's time zoneYes

    Campaigns check each recipient against quiet hours at send time, then delay or skip the message.

  • 10DLC brand and campaign registration in-productNo

    No US long code: US texting runs on the default toll-free number or a short code.

  • National and state DNC scrubbingCheck with the vendor

Email and SMS

Postscript

postscript.io

What it is

An SMS marketing app for Shopify stores. Every number joins through a confirmed reply or an on-site code, and Postscript runs the toll-free number verification for you.

Who it fits

Shopify stores that want plain-language opt-outs caught and sends held to each subscriber's waking hours.

  • Honours STOP and plain-language revocation automaticallyYes

    Variations on STOP, typos and phrases like "take me off this list" or "wrong number" unsubscribe automatically.

  • Sends the opt-in confirmation (program, HELP, STOP, frequency, rates)Yes

    After the reply, "You're subscribed! Reply STOP to unsubscribe, HELP for help."; the request before it names cart reminders and the rates line.

  • HELP auto-replyCheck with the vendor
  • Double opt-in availableYes

    Confirmed opt-in (reply Y) or Onsite opt-in (a code typed on the page); a number with neither is not added.

  • Records opt-in with a timestamp and the numberYes

    Each opt-in creates a record of the subscriber's consent that you can use to show they knowingly signed up.

  • Consent records exportableCheck with the vendor
  • Quiet-hours window by the recipient's time zoneYes

    Campaigns and automations triggered in quiet hours wait until waking hours in the subscriber's time zone.

  • 10DLC brand and campaign registration in-productCheck with the vendor

    Postscript manages toll-free number verification for you; 10DLC is not described.

  • National and state DNC scrubbingCheck with the vendor

Shopify SMS

Omnisend

omnisend.com

What it is

An email and SMS platform for online stores, with a separate SMS editor for US and Canadian recipients and toll-free number verification in its settings.

Who it fits

Stores that need consent dates in their exports and can live without SMS double opt-in.

  • Honours STOP and plain-language revocation automaticallyYes

    For US traffic, keyword matching plus AI intent detection for replies like "Please stop messaging me"; both unsubscribe at once and send a confirmation.

  • Sends the opt-in confirmation (program, HELP, STOP, frequency, rates)Check with the vendor
  • HELP auto-replyCheck with the vendor

    Its TCPA article says a US number must answer HELP with your company name and contact details; how that reply is set up is not shown.

  • Double opt-in availableNo

    Double opt-in is for email only; SMS sign-ups are single opt-in.

  • Records opt-in with a timestamp and the numberYes

    A submitted sign-up form adds a TCPA consent record, the phone number and the subscription status to the profile.

  • Consent records exportableYes

    The contacts file includes SMS consent, SMS opt-in date and SMS opt-out date.

  • Quiet-hours window by the recipient's time zoneYes

    On by default, 8 PM to 8 AM in each recipient's time zone.

  • 10DLC brand and campaign registration in-productCheck with the vendor

    US texting runs on a toll-free number verified from Store settings; 10DLC is not described.

  • National and state DNC scrubbingCheck with the vendor

Email and SMS

Attentive

attentive.com

What it is

An SMS and email marketing platform for online brands, with welcome journeys, AI journeys and an optional set of state quiet hours.

Who it fits

Retail programmes that run journeys and want each profile to show when and how a subscriber joined.

  • Honours STOP and plain-language revocation automaticallyNo

    Seven opt-out keywords act at once. Other opt-out phrasing gets a text asking the subscriber to reply STOP, without opting them out.

  • Sends the opt-in confirmation (program, HELP, STOP, frequency, rates)Yes

    Text welcome journeys open with a mandatory legal message carrying the carrier-required language.

  • HELP auto-replyCheck with the vendor
  • Double opt-in availableYes

    Uploads can require a reply of Y before anyone is subscribed; Attentive strongly recommends it.

  • Records opt-in with a timestamp and the numberYes

    Each profile shows the date Attentive first learned of the subscriber's intent and how they were collected.

  • Consent records exportableCheck with the vendor

    Segment exports carry the number, SMS marketing status and an opt-out flag, with no opt-in date column.

  • Quiet-hours window by the recipient's time zoneYes

    Journey messages wait for the subscriber's local time. Scheduled campaigns are not held, only flagged before they go.

  • 10DLC brand and campaign registration in-productCheck with the vendor
  • National and state DNC scrubbingCheck with the vendor

SMS and email

SimpleTexting

simpletexting.com

What it is

A web app for SMS and MMS campaigns, keywords and two-way texting, on toll-free, local (10DLC) or short-code numbers. It sends its own compliance text the first time a contact hears from you.

Who it fits

Local businesses that want keywords, a local number and opt-in dates without moving to a store platform.

  • Honours STOP and plain-language revocation automaticallyCheck with the vendor

    STOP unsubscribes the contact and later campaigns skip the number; other wording is not documented.

  • Sends the opt-in confirmation (program, HELP, STOP, frequency, rates)Yes

    A free, separate compliance text to each new contact: your name, STOP, HELP and the rates line.

  • HELP auto-replyYes

    A fixed system reply that gives your company phone number; it cannot be edited.

  • Double opt-in availableYes

    A per-keyword option: new contacts reply Y or N before they are added.

  • Records opt-in with a timestamp and the numberYes

    Contacts carry an opt-in date and an opt-in source (keyword or web form) that segments filter on.

  • Consent records exportableCheck with the vendor

    Lists export to CSV with contact fields and inbox history; opt-in date and source columns are not listed.

  • Quiet-hours window by the recipient's time zoneNo

    Delivery windows exist on autoresponders, but they follow the account's time zone.

  • 10DLC brand and campaign registration in-productYes

    A 10DLC registration form in the app once you pick a local number; SimpleTexting files it with The Campaign Registry.

  • National and state DNC scrubbingCheck with the vendor

SMS marketing

EZ Texting

eztexting.com

What it is

A text marketing platform with keywords, sign-up forms, campaigns and two-way texting; SafeSTOP is its name for the built-in compliance features.

Who it fits

Small businesses that want a close keyword-and-campaign match and a local number registered from the app.

  • Honours STOP and plain-language revocation automaticallyCheck with the vendor

    STOP, UNSUBSCRIBE, CANCEL, END and QUIT remove the contact automatically; the FAQ says plain-language opt-outs must also be honoured, without saying the platform catches them.

  • Sends the opt-in confirmation (program, HELP, STOP, frequency, rates)Yes

    A keyword sign-up immediately gets the required disclosures on message content and frequency.

  • HELP auto-replyCheck with the vendor
  • Double opt-in availableYes

    Offered to every account; required in some cases, such as age-gated content.

  • Records opt-in with a timestamp and the numberCheck with the vendor

    Its FAQ says keywords and web forms create the documented opt-in record; the fields kept are not listed.

  • Consent records exportableCheck with the vendor
  • Quiet-hours window by the recipient's time zoneNo

    Scheduled messages go out on the time zone set on the account.

  • 10DLC brand and campaign registration in-productYes

    An A2P 10DLC application workflow in the product; EZ Texting says most are approved within hours.

  • National and state DNC scrubbingCheck with the vendor

SMS marketing

How we read the claims

Questions SlickText users ask

Does SlickText's Opt-Out Intelligence opt people out on its own?

Only with the right setting. It is off until you switch it on, and then it offers two actions: "Opt the Contact Out", which unsubscribes the contact and sends your opt-out message, and "Reply with Opt-Out Instructions", which answers but leaves the contact subscribed. It also ignores texts from contacts who are not subscribed. Check which action your account uses before you copy the setup anywhere else: an instructions-only reader is closer to what Attentive does with fuzzy opt-outs than to what Klaviyo, Omnisend and Postscript document.

What does SlickText's pricing page say about features by plan?

That every plan gets every feature, integrations and Workflows included, so none of the compliance tools on this page are held back for a bigger plan. Plan size changes the number of message credits and the help you get: a one-to-one onboarding session from a certain plan size, and a dedicated Customer Success Manager on larger ones. One credit is one 160-character SMS segment to one subscriber, an MMS uses three credits per segment, and carrier fees pass through without markup. The prices themselves are on SlickText's pricing page; when you compare an alternative's plans, check that the plan you would buy carries the rows you need.

Do my subscribers need to opt in again after I leave SlickText?

Not because the software changed. The FCC's written-consent definition is an agreement that authorizes "the seller" to send the messages, so consent sits with your business. CTIA adds that an opt-in should apply only to the campaign and the specific sender it was obtained for. Keep the same business sending the same kind of messages and the consent carries over, as long as you can still prove it. A new kind of message, such as promotions to a list that joined for order updates, needs a new opt-in.

Can I take my SlickText number with me?

Ask before you cancel. SlickText assigns a toll-free number by default and handles porting an existing number in through your representative or support; taking a number out is not described in its help centre, so check with SlickText and with the new provider. Whichever number you send from, the new provider registers it again: toll-free verification or a 10DLC brand and campaign, with your terms and privacy policy links.

Do texts have to go out in the recipient's time zone?

For marketing texts, plan on it. The FCC rule bars telephone solicitations before 8 a.m. or after 9 p.m. local time at the called party's location, and it applies to texts to wireless numbers. SlickText schedules campaigns on the account's time zone, though its own article on Texas SB 140 recommends sending marketing only between 8 a.m. and 9 p.m. in the recipient's time zone. Several states are stricter: 9 a.m. to 8 p.m. in the recipient's time zone, Monday to Saturday, and noon to 8 p.m. on Sunday clears every state we have read.

Is the opt-out rule about to change?

An FCC order adopted on 2026-09-30 (FCC 26-67) lets a sender name one exclusive way to revoke, such as replying with a standard word, if it is disclosed clearly in the text. It takes effect 30 days after Federal Register publication, and it had not been published when we checked on 2026-10-22, so it is adopted but not yet in effect. Until then the current rule stands: any reasonable method counts, and a revocation must be honoured within 10 business days. Either way, keep the reader on.

Sources

  1. 47 CFR § 64.1200(a)(10)fetched 2026-10-22
  2. CTIA Messaging Principles and Best Practices (May 2023), 5.1.2.1fetched 2026-10-22
  3. FCC 26-67, revocation of consent order (adopted 2026-09-30)fetched 2026-10-22
  4. Federal Register API: FCC documents since 2026-10-01 (no FCC 26-67 publication)fetched 2026-10-22
  5. SlickText: Viewing and managing contact datafetched 2026-10-22
  6. SlickText: Importing contacts in bulk or creating them one at a timefetched 2026-10-22
  7. SlickText: Use keywords to let people text to joinfetched 2026-10-22
  8. SlickText: Pricing (common pricing questions)fetched 2026-10-22
  9. SlickText: Understanding Texas SB 140fetched 2026-10-22
  10. SlickText: Tools to help you stay compliantfetched 2026-10-22
  11. SlickText: Setting up auto-responses for your sending numberfetched 2026-10-22
  12. SlickText: Create campaigns to send or schedule mass text messagesfetched 2026-10-22
  13. SlickText: Obtaining and registering a sending numberfetched 2026-10-22
  14. Klaviyo: April 11 SMS opt-out compliance changefetched 2026-10-22
  15. Klaviyo: Understanding your text message settingsfetched 2026-10-22
  16. Klaviyo: Understanding the double opt-in processfetched 2026-10-22
  17. Klaviyo: Understanding consent in profilesfetched 2026-10-22
  18. Klaviyo: How to export a list or segment to a CSV filefetched 2026-10-22
  19. Klaviyo: Quiet hours in campaignsfetched 2026-10-22
  20. Klaviyo: Understanding SMS sending numbersfetched 2026-10-22
  21. Postscript: Subscriber opt-out compliancefetched 2026-10-22
  22. Postscript: Understanding Onsite Opt-in and Confirmed Opt-infetched 2026-10-22
  23. Postscript: Guide to quiet hoursfetched 2026-10-22
  24. Omnisend: Meet TCPA requirements for SMS marketing in US/CAfetched 2026-10-22
  25. Omnisend: Understand SMS opt-in methodsfetched 2026-10-22
  26. Omnisend: Export contacts to a filefetched 2026-10-22
  27. Omnisend: Manage SMS sending limits, frequency and quiet hoursfetched 2026-10-22
  28. Attentive: Fuzzy opt-outsfetched 2026-10-22
  29. Attentive: Create a welcome journeyfetched 2026-10-22
  30. Attentive: Subscriber list uploadsfetched 2026-10-22
  31. Attentive: Subscriber profile termsfetched 2026-10-22
  32. Attentive: Quiet hoursfetched 2026-10-22
  33. SimpleTexting: Free compliance messagefetched 2026-10-22
  34. SimpleTexting: What is a HELP response?fetched 2026-10-22
  35. SimpleTexting: Setting up a keywordfetched 2026-10-22
  36. SimpleTexting: Creating audience segmentsfetched 2026-10-22
  37. SimpleTexting: Adding delivery windows to autorespondersfetched 2026-10-22
  38. SimpleTexting: How to register your local numberfetched 2026-10-22
  39. EZ Texting: SafeSTOP compliance featuresfetched 2026-10-22
  40. EZ Texting help: How to send a text broadcastfetched 2026-10-22
  41. EZ Texting: A2P and 10DLC registrationfetched 2026-10-22