Best SMS Marketing Software in 2026

Klaviyo was founded in 2012 by Andrew Bialecki and Ed Hallen and is headquartered at 125 Summer Street in Boston. It began as an email tool for online stores and has grown into a customer-data and marketing platform with SMS, MMS, RCS and WhatsApp products; the company reports more than 205,000 paying customers in over 100 countries and more than 2,000 employees. Klaviyo reports results publicly, showing third-quarter 2026 revenue of US$387 million, up 25% year on year.

Its SMS product shares the same profiles, segments and flows as email, so an abandoned-cart journey can branch between channels based on a subscriber's consent and behaviour. Compliance tooling is built in: quiet hours by area code (9 pm to 8 am for other US states), age gating for alcohol brands, separate marketing and transactional consent, and a Compliance Hub with a health score. SMS is available in 23 listed countries across North America, Europe, Australia, New Zealand and Mexico.

Pricing is the main limitation for SMS-heavy senders. Klaviyo's plan page lists US$5 of mobile messages a month on its plans but does not publish a full per-message rate card, and its own comparison table shows SMS as an add-on for paid plans, which conflicts with the plan list. The SMS product page's calculator shows US$15 for 1,000 US toll-free messages a month.

Attentive Mobile Inc. was founded in 2016 under the name Franklin Mobile, raised a Series A in 2018 and reached unicorn status in 2020, according to its company timeline. It has more than 1,000 employees and offices in New York, San Francisco, London and Sydney. Its customers include large consumer brands; the logos it displays include Crate&Barrel, Crocs and Dyson.

Attentive sells packages covering SMS, email, RCS and push notifications. Its AI products include AI Grow for sign-up experiences, AI Journeys for behaviour-triggered messages and AI Pro, with AI Essentials included in all plans. It reports more than 150 pre-built integrations on its pricing page (100+ in its site navigation), 24/5 support and reach in more than 20 countries.

The trade-off is cost transparency. Attentive publishes the structure of its pricing but no dollar amounts: plans are priced on list size, messages sent, channels used and AI tools selected, and the company describes its billing as usage-based without a credit system. Bundling channels or AI products earns discounts. AI Pro and AI Grow carry flat monthly fees, while AI Journeys is billed per click. Small merchants generally find the published-price tools elsewhere in this list easier to budget for.

Postscript describes itself as an AI retention marketing platform for SMS, RCS and email aimed at ecommerce brands. The company is backed by Y Combinator and Accomplice among others and has worked fully remotely since 2018. It says it has "earned the trust of thousands of top merchants" but does not publish an exact customer count.

Unlike suites that started in email, Postscript was built around text messaging. Every plan includes campaigns, automations and unlimited segments, a dedicated toll-free number, subscriber acquisition tools and a branded short-link subdomain. Higher tiers add unlimited opt-in keywords, enhanced analytics, API access and the removal of "Powered by Postscript" from the opt-in. Enterprise adds a dedicated customer success manager, personalised product recommendations and a Data Warehouse Push. A separate Postscript AI plan bundles Brand Center, Infinity Testing and the Shopper agent.

Its pricing is one of the most transparent in the ecommerce segment: a platform fee plus a per-message rate that falls as the tier rises, with average US carrier fees listed on the page. The free trial includes US$100 of credit usable in the first 30 days. Email is newer to the product than SMS, so brands that want a mature email builder often pair it with a separate email tool.

SimpleTexting was launched in 2010 by three founders, Gene, Felix and Andrey, and lists its address at One North Wacker in Chicago. It became part of the Swedish communications group Sinch in 2021 and reports more than 15,000 customers.

The product targets general business texting rather than a single vertical: mass texting, two-way conversations, auto-replies and drip campaigns, MMS, an AI message generator, unlimited contacts, advanced segments and unlimited text-to-join keywords. It integrates with Mailchimp and Zapier and includes opt-in forms and pop-ups, API access, three users and two-factor authentication, with live support seven days a week. Incoming messages and replies are free, and unused credits roll over.

SimpleTexting's pricing page uses a configurator rather than a fixed table; the configuration shown in November 2026 was US$39 a month for 500 credits. Extra credits cost 5.5 cents each, a local number is US$10 a month, and there is a one-time US$4 carrier registration charge, with US carrier fees of about US$0.0025 per message passed through without mark-up. Credits are counted at 1 per SMS, 2 per extended message of up to 306 characters and 3 per MMS. Additional teammates cost US$20 a month each, which raises the cost for larger teams.

EZ Texting was founded in 2004 and is based in San Francisco. It reports more than 230,000 business customers and more than 8 billion messages sent. Its trademarks are registered to CallFire Inc.

The service covers mass texting, keywords, two-way messaging and onboarding, and its plans are tied to contact counts and sending-number type rather than to features alone. Launch (up to 500 contacts) uses a local textable number; Boost (500 to 2,000 contacts) a local high-volume number; Scale (2,000 to 50,000 contacts) a high-volume, high-speed local number with an onboarding specialist; and Enterprise (50,000+ contacts) a dedicated short code with a success manager, white-glove onboarding and priority support.

Plan prices are published, and annual billing reduces them by about a fifth. Each of the three smaller plans includes 500 credits a month, with overage priced from US$0.04 down to US$0.03 per credit, so heavy senders on Boost or Scale pay mostly in overage. The telecom fee of US$5 a month applies on Launch and is waived on the larger plans. Enterprise set-up takes 4 to 12 weeks because of short-code provisioning. A 14-day free trial needs no credit card, but only for the Launch plan.

Omnisend started in 2014 as Soundest; its co-founder and chief executive is Rytis Lauris. The company says it reached 150,000 online stores in 2025 and employs more than 250 people.

Omnisend combines email, SMS and web push for ecommerce, with pre-built automations for abandoned carts, welcome series and order follow-ups. SMS and MMS are available only on the Pro plan, which includes bonus SMS credits equal to the monthly bill; MMS works only for US and Canadian recipients.

Its SMS pricing is published by volume: US messages cost US$0.009 for credit purchases between US$10 and US$49.99, falling to US$0.007 above US$10,000, with global rates starting at US$0.007 and varying by country. The Pro plan was shown at US$41.30 a month on a three-month prepay offer, against a list price that works out to US$59 a month, for 2,500 contacts and unlimited email. The structure suits stores that want email and SMS from one vendor at lower cost than the enterprise suites, but the Free and Standard plans include no SMS at all.

SlickText says it has powered more than 124,000 text messaging programmes since 2011 and offers fully in-house, US-based support. It lists 16 native integrations, including Shopify, HubSpot, Salesforce, Mailchimp, ActiveCampaign and Constant Contact, plus Zapier and Make.

The product is aimed at small and mid-sized organisations, from retailers to churches. Every plan includes free incoming texts, unlimited contacts, rollover credits, live phone, chat and email support, and one premium sending number, and the company states that all features, including integrations and Workflows automation, are available at every plan size. Larger plans add one-to-one onboarding and, from US$579 a month, a dedicated customer success manager.

Pricing scales by monthly credit volume from US$29 for 500 credits to US$939 for 50,000, with annual plans giving two months free. Carrier fees are passed through without mark-up, eligible non-profits get 20% off, and SlickText states it will match any SimpleTexting standard plan price. RCS carries a US$500 set-up fee plus US$200 a year. The tool has no native email channel, so stores wanting combined email and SMS journeys need a second product.

Textedly is a US texting service sold in volume tiers. The company says thousands of businesses use it but publishes no customer count, founding date or ownership on its home page.

All plans include the same feature set, so only message volume changes between them: mass SMS, agentic AI features and AI voice agents, an omnichannel inbox, one toll-free and one 10DLC number per account, Google Business review requests, SMS text-to-pay, a shared short code (55222), unlimited contacts and MMS, and more than 3,000 integrations. Inbound messages are free and there are no long-term contracts.

Textedly's price list is one of the longest in the category, running from US$29 a month for 500 messages to US$5,520 for 300,000, with annual billing adding 20% more messages rather than lowering the price. The 14-day free trial includes 50 messages and one keyword. Every account pays an US$8 monthly telecom surcharge; additional teammates cost US$10 a month each; extra keywords US$10; and 10DLC registration ranges from US$4 to US$44 depending on expected volume. The page gives two different SMS character limits (455 and 1,600), which buyers should confirm with the vendor.

Mailchimp was founded in Atlanta in 2001 by Ben Chestnut and Dan Kurzius as a side project of their web design agency, the Rocket Science Group, and was acquired by Intuit in 2021. It says it serves millions of customers worldwide.

SMS is an add-on for customers on the Essentials plan or higher; MMS and branded short links require Standard or higher. Before buying credits, a business must apply and be approved for SMS. Credits are sold as a monthly subscription that renews with the marketing plan, or as one-time refills, and are also needed to reply in the Mailchimp inbox. Mailchimp lists 37 sending countries, with credit costs per SMS ranging from 1 credit in the United States to 16 in Slovenia (5 in the UK, 12 in Germany); MMS is available only in the US and Canada.

The main advantage is consolidation: an existing Mailchimp audience, automations and reporting gain a text channel without a second vendor. The main drawbacks are that unused credits expire at the end of each billing cycle, the help documentation gives credit costs but not dollar prices, and standard carrier vetting is included only with purchases of 5,000 or more credits or on the Premium plan.

Textmagic traces its operations to 2001, when Textmagic Ltd began trading in the UK under founder Dan Houghton. A management buyout led by Priit Vaikmaa, now chief executive, followed in 2013. The company lists its address in Romford, Essex, and reports more than 25,000 active paying business users.

Textmagic offers bulk SMS, two-way chat, templates, contact lists and an API, alongside email sending. Its distinguishing feature is billing: customers buy prepaid credit in US-dollar bundles and usage is deducted from the balance, with no monthly plan required; US customers can alternatively choose monthly subscriptions with discounted text rates.

The published US rate is US$0.049 per outbound 160-character part, which is high next to subscription tools at volume but avoids monthly commitments for occasional senders. Local and toll-free numbers cost US$10 a month each after a free first month, and local US numbers also need a 10DLC campaign at US$10 a month after the first month; brand verification is free. New accounts get a free test balance, and 10,000 emails are included at no charge.

Sakari is a business texting service with an address on Montgomery Street in San Francisco. It describes itself as a premier partner in HubSpot's technology ecosystem, having launched its HubSpot integration in 2018, and also integrates with Pipedrive, Slack and ActiveCampaign. The company says it sends about 10 million messages a month and reaches nearly 200 countries.

Sakari is used both for marketing campaigns and for sales and support conversations logged against CRM records, which places it between SMS marketing tools and customer communication software. Its Standard plan is billed monthly or annually from US$25, and an Enterprise plan is quoted individually.

Rates vary by recipient country and are published in a downloadable spreadsheet; on the US$25 plan the US rate is US$0.0304 per segment, with MMS at a US$0.02 premium. Phone numbers start at US$4 a month, number lookups cost US$0.01 each and call forwarding starts at US$0.008 a minute. The pricing page refers both to a 14-day free trial and to a trial plan with 100 messaging credits without reconciling the two.

Podium began in 2014 "in a spare bedroom", according to its company timeline, opened a second headquarters building in 2018, and says it has reached 100,000 businesses.

Podium is broader than a texting tool: it combines a two-way messaging inbox, review requests, payments and text marketing, which it describes as generating and sending text marketing campaigns using AI to drive new and repeat business. An AI Employee add-on can be attached to any plan to answer leads and messages.

Podium does not publish plan names or prices; its pricing page says plans are designed around a business's needs and directs buyers to sales. That makes it hard to compare with the credit-bundle tools above, and it is better evaluated as a customer communication suite that includes text marketing than as a dedicated bulk-SMS sender.

Twilio was founded in 2008 to simplify the global telecommunications network for software developers and reports more than 400,000 active customer accounts as of 30 September 2025. It is included here because many businesses build their own SMS marketing on its API, and because its published per-segment rates are a reference point for the cost of the underlying traffic.

Twilio Messaging sends SMS, MMS and RCS through long codes, toll-free numbers and short codes. Unlike the other entries it provides no marketer-facing campaign editor in the core messaging product: segmentation, scheduling and consent logic are built by the customer's developers. Twilio's documentation sets out the A2P 10DLC registration that US carriers require for application-to-person traffic over 10-digit numbers, including by individuals and hobbyists; unregistered traffic incurs extra carrier fees and more filtering.

US outbound SMS costs US$0.0083 per segment on long-code, toll-free and short-code numbers, and MMS US$0.022 per message, before per-carrier fees that range from US$0.0035 (AT&T) to US$0.005 (Verizon) for long-code SMS. A long code rents for US$1.15 a month and a random short code for US$1,000 a month billed quarterly. A US$0.001 fee applies to each failed message. Committed-use discounts are available through sales.