Maropost vs. Klaviyo:
Best SMS Marketing Platform for Ecommerce
This comparison reviews Maropost and Klaviyo SMS marketing software for ecommerce and retail teams. Compare text message marketing, SMS marketing automation, Shopify SMS, MMS, compliance, two-way SMS, and reporting side by side.
SMS Marketing Software & Text Message Campaign Features
Maropost lets you broadcast promotional SMS, including sales, launches, and reminders, to lists of opted-in subscribers. This is Maropost's core bulk SMS use case for marketing, distinct from one-to-one transactional alerts.
Klaviyo sends one-time SMS campaigns to lists or segments of opted-in subscribers, with scheduling for immediate or future delivery of promotions and announcements.
Maropost supports MMS (Multimedia Messaging Service) so you can send images and GIFs with your texts, ideal for retail brands showing products visually. Available in US, Canada, and Australia.
Klaviyo supports MMS campaigns by adding an image or GIF under 600 KB in the campaign editor, raising the limit to about 1,600 characters where MMS is available by country.
Maropost simplifies SMS campaign creation in two steps: (1) compose your message and compliance details, (2) choose your audience, schedule, and send. The workflow is built for non-technical marketers.
Klaviyo walks marketers through SMS campaign creation with content, audience, scheduling, and compliance steps in the same workflow used for MMS broadcasts.
Maropost includes a live preview panel that shows how your SMS or MMS will render on a mobile device as you type, helping you catch formatting issues before sending.
Klaviyo previews SMS and MMS content during campaign setup, including character guidance and compliance warnings before messages go live.
Maropost lets you insert contact tag merge fields into SMS content to personalize each message with profile data such as names, preferences, custom attributes, and more.
Klaviyo personalizes SMS with profile properties, dynamic tags, and ecommerce data from connected Shopify and other integrations.
Maropost lets you embed mobile keywords in campaign copy so recipients can text back a specific word (e.g. SALE, STOCK) to trigger automatic actions like list subscribe or coupon delivery.
Klaviyo provides subscribe keywords for list growth and compliance keyword responses, rather than embedding custom mobile keywords inside every promotional blast body.
Maropost gives you flexible send options: schedule SMS for a future date and time, send immediately with Send Now, or save campaigns as drafts to finish later.
Klaviyo lets teams send SMS campaigns immediately or schedule them for a future date and time, with quiet-hour warnings if the send may violate local rules.
Maropost schedules campaigns relative to each recipient's timezone when permitted sending hours use contact-local timezone mode, so messages arrive at appropriate local times.
Klaviyo applies SMS quiet hours using recipient phone area code by default in the US and Canada, with optional state-level quiet-hour rules and eastern-timezone fallback modes.
Maropost's Compliance tab lets you control the order and visibility of required elements such as organization name, message body, company link, and opt-out instructions in the final text.
Klaviyo includes required compliance elements in the campaign Compliance tab, such as opt-out language and contact details, with guidance not to disable required fields.
Maropost supports transactional SMS for automated, event-triggered messages like order confirmations, password resets, and OTP codes. Create templates in the UI and trigger sends programmatically via REST API when events occur.
Klaviyo focuses on marketing SMS and flow-triggered messages in its platform, rather than a separate marketer UI built only for one-off transactional REST deliver campaigns.
SMS Compliance, 10DLC & Deliverability
Maropost helps teams meet US commercial SMS requirements with verified toll-free numbers or approved 10DLC. Unverified toll-free numbers have strict daily/weekly/monthly send limits. Maropost recommends toll-free over 10DLC for cost and approval speed.
Klaviyo provisions toll-free numbers, long codes, branded sender IDs, and short codes as part of SMS onboarding and sender preference setup.
Maropost lets you configure the legal window when SMS can be sent (default 9 AM to 6 PM) using campaign timezone or each contact's local timezone. Journey SMS auto-pauses outside this window.
Klaviyo enforces SMS quiet hours on flows and warns on campaigns that may violate restricted sending windows, with configurable stop and resume times.
Maropost lets you set default organization name and company information link at the account level. These values auto-populate every new SMS campaign's Compliance tab.
Klaviyo centralizes SMS compliance settings including quiet hours, Smart Sending, litigator suppression, and keyword responses under Settings and SMS.
Maropost supports compliant opt-in collection, but regulations require you to document how and when each contact opted in: timestamp, method, IP address, phone number, and identity. You must retain these records.
Klaviyo records SMS consent sources and supports importing consent via API, with subscribe keyword and form opt-in documentation for compliance audits.
Maropost sends from a shared short code by default. You can request a dedicated 5–6 digit short code exclusive to your brand so recipients always see the same sender. Available on request via ClientSuccess@maropost.com.
Klaviyo recommends and supports dedicated short codes for high-volume senders, including lists of thirty thousand or more subscribers or large MMS holiday sends.
Maropost uses a pool of shared short codes (US/Canada) and long codes (other countries) across clients. Each message may show a different sender number unless you purchase a dedicated short code.
Klaviyo assigns brand-specific toll-free, long-code, or short-code sending numbers rather than rotating shared short codes across unrelated clients on every message.
Maropost maintains an account-wide SMS Do Not Mail suppression list. Anyone on it will never receive SMS from your account, and contacts with permanent delivery failures are added automatically.
Klaviyo automatically unsubscribes known SMS litigators at collection and processes STOP and related opt-out keywords to keep suppression lists current.
Maropost warns you when scheduling a campaign outside permitted hours, with Pause (default) or Send Anyway options to prevent accidental compliance violations.
Klaviyo skips or queues campaign and flow messages that would send during quiet hours, reducing risk of non-permitted-hour promotional delivery.
Maropost lets you replace the default mpt1.co short domain with your own branded domain for SMS links. Add a CNAME DNS record and verify ownership in Settings.
Klaviyo requires its automatic link shortener for SMS attribution tracking, while fully branded custom SMS link domains are not the default model.
Maropost supports teams messaging Texas residents under Texas Senate Bill 140 (effective Sept 2025), which requires registration via Form 3401, a $200 annual fee, and a $10,000 security deposit.
Klaviyo can enforce US state-level quiet-hour rules when area-code mode is enabled, but merchants remain responsible for registrations such as Texas SB 140 where applicable.
Ecommerce SMS Marketing & Shopify List Growth
Maropost provides dedicated lists that store SMS subscribers separately from email lists. Each list has its own dashboard with subscriber statistics and management tools.
Klaviyo stores SMS subscribers on unified profiles with lists and segments tied to ecommerce behavior and consent status.
Maropost lets you build popup or embedded web forms to capture phone numbers and grow your SMS list directly from your website with compliant opt-in fields.
Klaviyo captures SMS opt-ins through signup forms, click-to-text buttons, subscribe keywords, checkout collection, and SMS subscribe links on supported number types.
Maropost supports double opt-in when enabled on a form with a phone field: the SMS contact is only added after the subscriber confirms via email. You must disclose SMS consent clearly since double opt-in is email-based.
Klaviyo supports single and double opt-in on subscribe keywords and forms, with double opt-in recommended for keyword-based collection.
Maropost lets you bulk import phone numbers from CSV or TXT files, mapping phone column, optional subscription status (S=Subscribed, U=Unsubscribed), and optional UID column.
Klaviyo lets merchants import SMS consent from CSV or third-party tools via API, documenting how subscribers originally opted in.
Maropost lets you target campaigns using contact lists, segments, or both. If a contact appears in multiple selected audiences, they receive the message only once.
Klaviyo targets SMS campaigns and flows using segments, lists, predictive audiences, and Shopify event data across the customer profile.
Maropost lets you exclude specific lists or segments from a campaign send, useful for suppressing recent buyers, VIPs already messaged, or other subsets.
Klaviyo maintains global SMS suppression for opt-outs and litigators, with Don't send to segments available on campaigns.
Maropost's Shopify integration syncs phone numbers and sms_marketing_consent status in real time when customers opt in on your Shopify store.
Klaviyo integrates deeply with Shopify for SMS consent, customer profiles, and behavioral triggers that power segmentation and automations.
Maropost's Retail Express integration syncs customer phone data and SMS subscription preferences so you can message retail customers from one platform.
Klaviyo does not offer a native Retail Express integration for syncing in-store retail customer phone fields and SMS preferences into its platform.
Maropost gives you control over when forms appear: on page load, exit intent, after scrolling a percentage, on specific URLs, or hide for X days after dismissal.
Klaviyo forms and onsite experiences support targeting, display logic, and country-based routing for SMS collection on supported sending numbers.
Maropost landing pages can be used as destinations for SMS campaigns and as acquisition surfaces to collect mobile opt-ins.
Klaviyo promotes subscribe keywords on websites, social posts, and landing experiences where visitors text a keyword to the brand sending number.
SMS Marketing Automation, Two-Way SMS & Journeys
Maropost lets you define mobile keywords, specific words or phrases (e.g. JOIN, SALE), that contacts can text to your number. Each keyword links to an action and an automatic response message.
Klaviyo lets brands create custom subscribe keywords in Settings and Keyword Responses, with up to hundreds of keywords for opt-in programs.
Maropost sends a custom auto-reply instantly when a defined keyword is received. Replies can include coupon codes, links, or nested keywords.
Klaviyo sends automatic compliance and subscribe keyword replies, including HELP and STOP handling separate from marketing subscribe keywords.
Maropost handles inbound replies by matching text against active keywords within a 2-hour window. Valid keyword matches get the keyword response; everything else gets the invalid response.
Klaviyo processes inbound SMS replies for compliance keywords and supports conversational use cases where customers text subscribe keywords or responses.
Maropost supports text-to-win contests: promote a keyword (e.g. WIN2026), add contacts who text in to a list, then pick a winner from subscribers and notify them via SMS.
Klaviyo can run contest and giveaway opt-ins by promoting subscribe keywords on site and social, with disclosure language required near the keyword.
Maropost powers back-in-stock alerts with keywords on out-of-stock product pages (e.g. STOCK42). When the item is restocked, deactivate the keyword and Maropost SMS everyone who subscribed with a link to buy.
Klaviyo flows can trigger back-in-stock and product-interest SMS when connected to catalog and shopper behavior events from ecommerce integrations.
Maropost lets you add an SMS step inside automated customer journeys alongside email actions. The journey engine sends the right text at the right point in the customer lifecycle without manual intervention.
Klaviyo Flows include Send SMS actions on a visual canvas for welcome, cart, browse, and lifecycle automations alongside email and push.
Maropost's Send SMS journey widget includes its own Compliance tab so you can verify legal content before the journey goes live.
Klaviyo applies compliance settings to flow SMS messages, including quiet-hour queuing and required opt-out elements on marketing texts.
Maropost automatically pauses journey SMS messages when they would send outside permitted hours for a contact's timezone, then resumes when the window opens.
Klaviyo holds flow SMS in a waiting queue during quiet hours and resumes delivery when the restricted window ends for each recipient.
Maropost skips the Send SMS journey step silently when a contact has no linked SMS phone record, then continues them to the next journey action.
Klaviyo flow splits and filters branch on profile consent, segments, and channel eligibility so non-SMS profiles follow alternate paths.
Maropost delivers transactional SMS for automated, event-triggered messages like order confirmations, password resets, and OTP codes. Create templates in the UI and trigger sends programmatically via REST API when events occur.
Klaviyo exposes APIs to import SMS consent and trigger automations, though it does not mirror a dedicated transactional SMS REST deliver campaign editor.
SMS Marketing Platform Analytics & Attribution
Maropost provides a per-campaign dashboard after send with message preview, performance tiles (sends, delivered, replies, clicks), drill-down reports, and campaign metadata.
Klaviyo provides an SMS dashboard with deliveries, click rate, unsubscribe rate, and Klaviyo attributed value for campaigns versus flows.
Maropost shortens all URLs in your SMS body to trackable links on mpt1.co when click tracking is enabled (default ON), so you can measure clicks per link in the campaign dashboard.
Klaviyo tracks SMS and MMS link clicks through its automatic short links, feeding conversion metrics into the SMS performance dashboard.
Maropost tracks revenue generated from SMS campaigns alongside delivery and engagement metrics so you can measure ROI of your text marketing.
Klaviyo attributes SMS revenue using configurable conversion windows tied to placed orders and other ecommerce metrics from connected stores.
Maropost's Contact 360 profile shows SMS-specific analytics per person: sends, opens, clicks, bounces, campaign history, and keyword interactions in one unified view.
Klaviyo unified profiles show SMS consent, message history, and engagement alongside email and push data in one customer record.
Maropost lets you build scheduled or one-time reports across selected SMS campaigns with metrics like delivery rate, reply rate, bounce rate, and unsubscribe rate. Export as CSV, XLS, PDF, or XLSX.
Klaviyo Reports and the SMS dashboard export campaign and flow performance, including revenue per recipient and channel breakdowns.
Maropost provides a billing-focused report showing every individual message segment sent or received, with segment counts, message type (campaign, test, keyword reply), and timestamps.
Klaviyo message analytics distinguish campaign versus flow sends, deliveries, clicks, conversions, and unsubscribes at the message level.
Maropost's main Dashboard includes an SMS Volume widget showing outbound and inbound message counts over time as a line chart for account-level monitoring.
Klaviyo SMS dashboard summarizes subscriber growth, deliveries, and channel performance over selectable time periods for account monitoring.
Maropost's Account & Billing Usage section shows your real-time SMS consumption alongside email, filterable by month or year.
Klaviyo bills SMS and MMS using message credits under its plan, with usage visible through billing and performance reporting.
Maropost lets you schedule custom SMS reports to run daily, weekly, or monthly and email results automatically. Date ranges use Eastern Time.
Klaviyo lets teams export the SMS dashboard as an executive summary and download report data for sharing with stakeholders.
Maropost lets you download SMS send reports and custom reports as Excel (.xlsx) files for offline analysis and sharing with stakeholders.
Klaviyo supports exporting SMS performance and subscriber data for offline analysis through dashboard exports and analytics reports.