Table of contents
How we vet every listicle
Every agency featured on Web Tonic passes our 84-point editorial review before a single listicle goes live. This is how we vet each pick:
Verified client outcomes: We require real case studies with measurable KPIs — revenue, ROAS, CPA, retention — tied to the exact category being ranked. No cherry-picked wins, no unverifiable numbers.
Independent reputation: We cross-check Clutch, Google, G2, and Trustpilot ratings, and screen for review-bombing or suspicious patterns. Only operators with a consistent, verifiable track record make the cut.
Beyond that, every listing goes through a quarterly re-audit. We check 84 criteria across 6 pillars to make sure it still holds up — here are some of the checks we run:
An SMS marketing agency runs a brand's text message marketing as its own revenue line: compliant list growth at checkout and through pop-ups, 10DLC registration and quiet-hours handling, setup on SMS marketing platforms such as Attentive, Postscript or Klaviyo, then the welcome, cart, replenishment and winback flows plus a promotional calendar and two-way replies to inbound text messages.
We compared 21 SMS marketing services on what a buyer can check before signing: disclosed offices, platform partner tier, published case-study numbers and rates. Only 2 of the 20 external agencies publish a starting price, so we flag that gap.
Which SMS marketing partner should you shortlist?
It follows your stack and your stage. Chronos, UN/COMMON and Andzen suit established Klaviyo-native brands; Flypost, Threadpoint and Retention Commerce fit Shopify stores wanting flows fast; RELAIN, YOCTO and Bambino serve European and UK brands needing local consent rules.
1. Chronos Agency
About: Chronos Agency is a Singapore-headquartered lifecycle marketing agency running email, SMS and push notification programs for 500+ eCommerce brands. Founded by Joshua Chin in 2017, it has grown into an 80+ person Klaviyo Master Elite Partner with offices in Australia and the US. Its 6-layer retention system targets 30%+ of client revenue from email/SMS/push combined.
Key Services: SMS marketing strategy & campaigns, Klaviyo/Postscript SMS automation, Email marketing, Push notification marketing, Segmentation & A/B testing, Regulatory compliance & deliverability
Industries Served: DTC apparel & fashion, Beauty & skincare, Health & wellness, Home & lifestyle, Food & beverage
Notable Clients: Not publicly named — case studies are anonymised by category
Locations: Singapore, Singapore, Sydney, Australia, New York, United States
Pricing: No public rate card; quoted per scope
Great For: Established 6-8 figure DTC brands, Brands scaling email+SMS together, Klaviyo-native ecommerce brands
Website: Chronos Agency
2. Web Tonic
About: Web Tonic treats text messaging as a revenue channel that has to answer to the same numbers as paid media, because the same team is usually buying that media. We build the opt-in paths, the consent and quiet-hours rules, and the welcome, cart and winback flows, then report SMS revenue next to paid social rather than in a channel silo. For a pure Klaviyo-only retention build with nothing else attached, several specialists below are the sharper choice, and we will tell you so.
Key Services: Growth Marketing, Paid Social, PPC, Meta Ads, SEO, Google Ads, Snapchat Ads, Amazon Ads, Reddit Ads, TikTok Ads, TikTok Shop, GEO-AEO, Webflow Design, Shopify Design, WordPress Design, UGC, Social Media Management, Pay Per Click Management, Marketing Analytics, Analytics Implementation & CDPs, Performance Branding, Performance 360° Audit, Programmatic Ads, OOH Ads, HR Marketing
Industries Served: eCommerce, SaaS, B2B, Construction Professionals, Home Services, SMEs, Health Spa & Wellness, Retail, Legal & Judicial Services, Food & Beverages, Pets, Fitness, Family & Children, Finance & Insurance, Travel, Non-Profits & Organizations, Furniture & Decoration
Notable Clients: WorldRemit, Jack & Jones, Ardene, L'Oréal, Sendwave, Nestlé, Airbnb. Serve Fortune 500 companies and smaller fast-paced startups.
Locations: HQ in San Francisco with notable offices in New York, Chicago, Miami, Toronto, Montreal, Dubai, Singapore, Sydney and more. Offices on five continents.
Pricing: Starting at USD $3,000 per month. Flexible and scalable plans at any time according to your enterprise needs. Book a call to learn more.
Great For: Mid-market to enterprise-level businesses requiring ongoing, on-tap growth and performance marketing services.
Website: Web Tonic
3. Stimulate
About: Stimulate is a Boston-based retention marketing agency built around email, SMS, direct mail and loyalty for DTC and ecommerce brands. Founded by Randy McHugh in 2020, it positions itself as a full customer-lifecycle partner rather than a channel vendor, citing over $100M in attributable revenue driven for clients as of 2026.
Key Services: SMS marketing management, SMS automation setup, Email marketing management, Direct mail marketing, Subscription management, Loyalty program management
Industries Served: Ecommerce/DTC, Hotels, Med spas, Beauty, Consumer goods
Notable Clients: Not publicly named — case studies are anonymised by category
Locations: Boston, United States, Remote team, United States
Pricing: No public rate card; quoted per scope
Great For: DTC brands wanting full lifecycle coverage, Hospitality and med-spa businesses, Brands adding direct mail to email/SMS
Website: Stimulate
4. Flowium
About: Flowium is a Staten Island, NY email and SMS marketing agency founded in 2017 by Andriy Boychuk, serving 1,000+ ecommerce brands as a Klaviyo Elite agency. Alongside SMS and email it runs push notifications, WhatsApp and RCS marketing, and is insured for media, cyber and liability risk on client accounts. It reports 2025 attributed SMS revenue in the tens of millions across its client base.
Key Services: SMS marketing, Email marketing & audits, Klaviyo agency services, Push notifications, WhatsApp marketing, RCS marketing
Industries Served: Apparel & footwear, Beauty & supplements, Furniture & home goods, Health/CPG, Pet care
Notable Clients: Not publicly named — case studies are anonymised by category
Locations: Staten Island, United States, New York, United States
Pricing: No public rate card; quoted per scope
Great For: Brands wanting SMS plus WhatsApp/RCS, Mid-market ecommerce with a Klaviyo stack, Brands needing insured/vetted agency partners
Website: Flowium
5. Fuel Made
About: Fuel Made is a Shopify Design & Development and Klaviyo Master Elite Partner agency headquartered in Colbert, Washington, with a distributed North America-based team. It combines Shopify UX/build work with Klaviyo email/SMS marketing and CRO, serving brands like Beardbrand, Figs and Briogeo. Its case studies show measurable SMS-driven campaign lifts alongside email.
Key Services: Klaviyo SMS marketing, Email marketing automation, Shopify design & development, Conversion rate optimization, Segmentation & personalization, A/B testing
Industries Served: Beauty & grooming, Pet products, Apparel, Home goods, Health
Notable Clients: Beardbrand, Figs, Briogeo, Umbra, Tuft & Paw
Locations: Colbert, United States, Remote team, Brazil
Pricing: No public rate card; quoted per scope
Great For: Shopify Plus brands needing design + retention, Brands wanting CRO paired with SMS/email, Klaviyo-first ecommerce teams
Website: Fuel Made
6. Andzen
About: Andzen is a Brisbane, Australia-headquartered retention marketing agency and the first Klaviyo Master Elite Partner outside the US. It runs email and SMS programs for ecommerce and DTC brands globally, with additional offices across Australia, North America and Europe, and was named Klaviyo Agency Partner of the Year APAC in 2025.
Key Services: Klaviyo SMS marketing, Email marketing automation, CRM audits & optimisation, Customer journey mapping, Win-back & re-engagement campaigns, Loyalty & referral programs
Industries Served: Fashion & apparel, Beauty, Health & wellness, Home goods, Food & beverage
Notable Clients: Not publicly named — case studies are anonymised by category
Locations: Brisbane, Australia, Sydney, Australia, Toronto, Canada
Pricing: No public rate card; quoted per scope
Great For: APAC brands needing global-standard Klaviyo SMS, Ecommerce brands wanting CRM audits, Brands running win-back and loyalty programs
Website: Andzen
7. Hawke Media
About: Hawke Media is a Santa Monica, California full-service outsourced-CMO agency founded by Erik Huberman in 2014, offering SMS and email lifecycle marketing alongside paid media, creative, PR, SEO and social. It has worked with 6,000+ brands, including Red Bull, K-Swiss and Crocs, and publishes SMS case studies such as a documented 1864% ROI SMS campaign for apparel brand Banks Journal.
Key Services: SMS marketing strategy & automation, Email & lifecycle marketing, Paid media (Meta/Google), Creative & content production, SEO, PR
Industries Served: DTC apparel, Beauty, Consumer electronics, Food & beverage, Wellness
Notable Clients: Banks Journal, Red Bull, K-Swiss, Crocs, HP
Locations: Santa Monica, United States, Los Angeles, United States
Pricing: No public rate card; quoted per scope
Great For: Brands wanting SMS as part of a full-service outsourced CMO, Emerging and household-name brands alike, Multi-channel marketing consolidation
Website: Hawke Media
8. ECD Digital Strategy
About: ECD Digital Strategy is a Schenectady, New York revenue-focused ecommerce marketing agency offering SMS marketing, email, paid media and Shopify/WordPress development for DTC and B2B brands. It is a Klaviyo Master Elite and PostPilot partner, reporting SMS open rates over 95% and email/SMS combined driving up to 64% of client revenue in case studies.
Key Services: SMS marketing, Klaviyo email marketing, Paid social & search, Shopify/WordPress website development, Direct mail, E-commerce site management
Industries Served: Home & garden, Food & beverage, Clothing & apparel, Specialty retail, Nursery/agriculture
Notable Clients: Saratoga Olive Oil Co., Power Planter, Classic Caladiums, Name Bubbles, Feltman's Hot Dogs
Locations: Schenectady, United States, Remote team, Colombia
Pricing: No public rate card; quoted per scope
Great For: Home/garden and food & beverage DTC brands, Brands needing SMS plus site development, Small-to-mid ecommerce wanting a single agency partner
Website: ECD Digital Strategy
9. Flypost
About: Flypost is a Los Angeles email and SMS marketing agency founded by Dwight Aims, and a certified Klaviyo agency partner specializing in Shopify, WooCommerce and Commerce7 brands. It reports over $150M in email-attributed revenue for clients and pairs Klaviyo email with Postscript or Klaviyo SMS for coordinated cart-recovery and campaign sequencing.
Key Services: SMS marketing (Postscript/Klaviyo), Email campaign strategy, Flows & automation, Segmentation & personalization, Performance analytics, Klaviyo migration
Industries Served: Food & beverage/subscription coffee, Apparel & vintage retail, Wine & spirits, Bikes & lifestyle products, Music merchandise
Notable Clients: Lofi Girl, Old School Tees, Western Bagel, Linus Bikes, Corner 103
Locations: Los Angeles, United States, Remote team, United States
Pricing: USD $2,000–$10,000/month depending on scope
Great For: $1M-$50M ecommerce/DTC brands, Wine club and subscription commerce brands, Brands wanting coordinated email+SMS sequencing
Website: Flypost
10. Threadpoint
About: Threadpoint is a Manhattan Beach, California Klaviyo Master Platinum Partner agency built exclusively for Shopify and Shopify Plus brands' email and SMS. Co-founded by Frank Field, it emphasizes P&L-aligned reporting over vanity metrics and offers a 'Flows Only' or 'Full-Service' engagement model for lifecycle automation and campaign management.
Key Services: SMS marketing (Shopify-native), Klaviyo flow setup & automation, Email strategy & design, Klaviyo migration, Email deliverability, Retention/bottom-funnel marketing
Industries Served: Sports & outdoor, Health & wellness, Fashion & accessories, Beauty & grooming, Food & beverage
Notable Clients: Not publicly named — case studies are anonymised by category
Locations: Manhattan Beach, United States, Remote team, United States
Pricing: No public rate card; quoted per scope
Great For: Shopify/Shopify Plus brands only, Brands wanting margin-focused SMS reporting, Teams choosing between flows-only or full-service support
Website: Threadpoint
11. Magicianly
About: Magicianly is a lifecycle email and SMS marketing agency for ecommerce brands, operating since 2019 under founder Emiel Dingemans with a team distributed across the Netherlands and Bosnia & Herzegovina. It reports over $300M in email/SMS-attributed revenue and a 4.8/5 Trustpilot rating from 40+ reviewed brands, with published case studies like a 28% revenue lift for Tiesta Tea.
Key Services: SMS & email revenue systems, Lifecycle strategy & flows, Deliverability recovery, List growth optimisation, Klaviyo audits, Campaign & flow QA
Industries Served: Beverage & food, Apparel, Sleepwear/loungewear, Consumer products, Subscription ecommerce
Notable Clients: Tiesta Tea, TakeShots, jijamas
Locations: Amsterdam, Netherlands, Sarajevo, Bosnia and Herzegovina
Pricing: No public rate card; quoted per scope
Great For: Brands needing deliverability recovery, Ecommerce brands wanting revenue-infrastructure framing, Mid-size DTC brands seeking measurable lifts
Website: Magicianly
12. Bambino Agency
About: Bambino is a Manchester, UK AI-native digital marketing agency offering a dedicated SMS marketing service alongside SEO, paid media and CRM automation, serving 400+ UK businesses. Its SMS practice is built around PECR/UK GDPR compliance, publishing an average 98% open rate and 19-45% click rate benchmark for its own campaigns and a published starting rate.
Key Services: SMS marketing programmes, PECR/GDPR compliance setup, List building & segmentation, Google/Meta paid media, SEO & AI search visibility, Klaviyo/HubSpot marketing automation
Industries Served: UK retail & ecommerce, Local services, B2B SaaS, Hospitality, Professional services
Notable Clients: Not publicly named — case studies are anonymised by category
Locations: Manchester, United Kingdom, Remote team, United Kingdom
Pricing: From GBP £1,200/month
Great For: UK SMBs needing PECR-compliant SMS, Brands wanting SMS bundled with SEO/paid, Businesses without in-house compliance resource
Website: Bambino Agency
13. Human
About: Human is an Irvine, California growth marketing agency offering SMS and email retention services within a broader ecommerce and B2B marketing practice. It has documented case studies for brands like Thompson Tee and Kwik-Hang (both Shark Tank alumni), and also serves as an agency partner for Textedly, an SMS marketing platform.
Key Services: SMS marketing, Email marketing, Paid media, SEO & content marketing, CRO & web design, Branding & creative
Industries Served: DTC ecommerce, Shark Tank/consumer products, B2B energy & industrial, Jewelry retail, Home goods
Notable Clients: Thompson Tee, Kwik-Hang, Softies, Vibrant Health, GoGreenSolar
Locations: Irvine, United States, Remote team, United States
Pricing: No public rate card; quoted per scope
Great For: Shark Tank / early-stage consumer brands, B2B brands wanting SMS added to a broader program, Brands wanting full growth-marketing partner
Website: Human
14. Essence of Email
About: Essence of Email is a Houston, Texas boutique email and SMS agency founded by Xiaohui 'X' Wang in 2014, intentionally capping its client roster for principal-led strategy rather than junior account management. It has served 450+ brands and documents specific SMS wins, including generating $40K in SMS revenue from zero for Filterbuy in under a month.
Key Services: SMS strategy & campaigns, ESP/SMS platform migration, Deliverability recovery, Retention strategy execution, Segmentation, Quarterly roadmapping
Industries Served: Health & wellness, Home decor, Air purification, Apparel, Home improvement
Notable Clients: Oransi, Misook, Filterbuy, BariatricPal, XeroShoes
Locations: Houston, United States, Remote team, Serbia
Pricing: No public rate card; quoted per scope
Great For: Brands wanting principal-led (not junior-run) strategy, Deliverability emergencies, Brands doing ESP/SMS platform migrations
Website: Essence of Email
15. Retention Commerce
About: Retention Commerce is a Los Angeles-based Klaviyo marketing agency founded by Joseph Hsieh in 2015, focused specifically on Klaviyo email and SMS implementation for ecommerce brands. It positions itself as 100% focused on Klaviyo setup, flow development and campaign management rather than running a multi-platform practice.
Key Services: Klaviyo SMS setup & optimisation, Email flow automations, Email migration to Klaviyo, Campaign management, Retargeting ad sync, Flow development
Industries Served: DTC ecommerce, Consumer goods, Beauty, Apparel, Health
Notable Clients: Not publicly named — case studies are anonymised by category
Locations: Los Angeles, United States, Remote team, United States
Pricing: No public rate card; quoted per scope
Great For: Brands wanting a 100% Klaviyo-focused specialist, Small teams migrating to Klaviyo, Brands wanting SMS+email in one implementation partner
Website: Retention Commerce
16. Growth Gurus
About: Growth Gurus is a Newcastle, Australia retention marketing agency and Klaviyo Elite Partner running email and SMS for ecommerce brands across homewares, fashion, supplements and beauty. Its 2026 Partner Advisory Council membership with Klaviyo and published case studies — including a 35x ROI across six Casella Family Brands wine labels — position it as a data-led lifecycle specialist.
Key Services: SMS marketing campaigns & automation, Email marketing & segmentation, Loyalty & referral programs, Customer data segmentation, CRM strategy & infrastructure, List growth & onsite capture
Industries Served: Wine & alcohol, Homewares, Fashion, Supplements, Beauty & skincare
Notable Clients: Casella Family Brands, Omnilux, Sdara Skincare, Happy V, Joovv
Locations: Newcastle, Australia, Melbourne, Australia
Pricing: No public rate card; quoted per scope
Great For: Wine/alcohol and supplement brands, Ecommerce wanting Klaviyo Advisory Council-level expertise, Brands scaling across multiple sub-brands
Website: Growth Gurus
17. Adaptic Agency
About: Adaptic Agency is a retention marketing agency (operated by Bode Media GmbH, registered in Arnegg, Switzerland) building profit-first email and SMS systems for founder-led ecommerce brands. It frames retention as a system rather than isolated campaigns, running audits, flow builds and ongoing campaign management aligned to LTV and margin targets.
Key Services: SMS retention systems, Email flow builds, Retention audits, Campaign management & optimisation, List segmentation, Deliverability protection
Industries Served: Founder-led DTC ecommerce, Consumer goods, Beauty, Health, Lifestyle products
Notable Clients: Not publicly named — case studies are anonymised by category
Locations: Arnegg, Switzerland, Remote team, Europe
Pricing: No public rate card; quoted per scope
Great For: Founder-led early-stage ecommerce brands, Brands reducing paid-acquisition dependency, European DTC brands wanting profit-first framing
Website: Adaptic Agency
18. RELAIN
About: RELAIN is a Munich, Germany retention marketing agency co-founded by Marc Hiller and Florian Suckfüll, working with a capped roster of 7-9 figure DTC brands on email, SMS, WhatsApp and direct mail. It combines behavioral-science-driven campaign design with financial analytics tying CRM performance directly to P&L, citing clients like Foot Locker and SUSHI BIKES.
Key Services: SMS automation & campaigns, WhatsApp marketing, Email flow strategy, Direct mail integration, CRM system architecture, Loyalty program design
Industries Served: Sporting goods & footwear, Beauty, Mobility/bikes, Supplements, Fashion
Notable Clients: Foot Locker, SUSHI BIKES, drink paint, femtis, VEDIC LAB
Locations: Munich, Germany, Remote team, United States
Pricing: No public rate card; quoted per scope
Great For: 7-9 figure European DTC brands, Brands wanting SMS + WhatsApp + direct mail combined, CFO-facing retention reporting needs
Website: RELAIN
19. YOCTO
About: YOCTO is a Klaviyo Elite lifecycle marketing agency founded by George Kapernaros, specializing in email, SMS, WhatsApp and direct mail for fast-growing DTC health, wellness, beauty and subscription brands. It runs the largest reported book of Klaviyo business in EMEA and documents case studies such as a 252% email+SMS revenue increase for the Mira fertility app.
Key Services: SMS flows & compliance, Campaigns & segmentation, List growth & compliance, WhatsApp marketing, Direct mail, Subscription/CRM strategy
Industries Served: Supplements & wellness, Beauty & skincare, Femtech/fertility, Subscription commerce, CPG
Notable Clients: Mira, BetterMe, Healf, Kilo.co, Gratsi
Locations: Nicosia, Cyprus, Athens, Greece
Pricing: No public rate card; quoted per scope
Great For: Subscription and health/wellness DTC brands, Brands needing TCPA-compliant SMS + WhatsApp, Brands migrating from other ESPs to Klaviyo
Website: YOCTO
20. UN/COMMON
About: UN/COMMON is a Philadelphia, Pennsylvania Shopify Plus and Klaviyo Master Elite agency delivering lifecycle email/SMS marketing, redesign and conversion optimisation for mid-market ecommerce brands. Founded in 2015, it has managed over $1B in online sales for clients and lists brands like Rare Beauty by Selena Gomez and Dermalogica among its lifecycle marketing case studies.
Key Services: SMS strategy & execution, Klaviyo migration, Lifecycle flow strategy & optimisation, Conversion rate optimization, Shopify Plus replatforming, Loyalty & referral programs
Industries Served: Beauty & cosmetics, Food & beverage, Health & wellness, Fashion & lifestyle, Home & family
Notable Clients: Rare Beauty by Selena Gomez, Dermalogica, Liquid Death, Wander Beauty, Beautyblender
Locations: Philadelphia, United States, Remote team, United Arab Emirates
Pricing: No public rate card; quoted per scope
Great For: Beauty and celebrity-backed DTC launches, Brands needing Shopify Plus + lifecycle combined, Mid-market brands wanting a $1B+ track record
Website: UN/COMMON
21. Sidekick
About: Sidekick is a small, Los Angeles-based email and SMS retention team led by ex-Amazon ecommerce operators, intentionally capping its client list to stay hands-on. It runs email, SMS, subscriptions, loyalty and reviews programs for D2C brands like Goodles and Jambys, emphasizing granular metrics over vanity stats like open rate.
Key Services: SMS campaigns, Email marketing, Subscription program support, Loyalty program implementation (Yotpo), Reviews & referrals, Custom analytics
Industries Served: CPG, Apparel, Home goods, Skincare, Consumer products
Notable Clients: Goodles, Jambys, Birthdate Co., Seager Co., Life Elements
Locations: Los Angeles, United States, Remote team, United States
Pricing: No public rate card; quoted per scope
Great For: Small D2C brands wanting a capped, hands-on team, CPG and apparel brands scaling loyalty + SMS, Brands wanting granular, non-vanity metrics
Website: Sidekick
Quick Comparison Table
| Agency | Key Specialty | Starting Price | Best For |
|---|---|---|---|
| 1. Chronos Agency | Full lifecycle email/SMS/push | Quote-based | Scaling DTC lifecycle programs |
| 2. Web Tonic | Full-Service Performance Marketing | USD $3,000/mo | Mid-market to Enterprise |
| 3. Stimulate | Retention marketing + loyalty | Quote-based | Full-funnel retention programs |
| 4. Flowium | Multi-channel Klaviyo retention | Quote-based | Email + SMS + emerging channels |
| 5. Fuel Made | Shopify + Klaviyo SMS/email | Quote-based | Shopify design + retention combo |
| 6. Andzen | Klaviyo Master Elite retention | Quote-based | APAC-to-global retention marketing |
| 7. Hawke Media | Outsourced CMO with SMS/lifecycle | Quote-based | Full-service marketing incl. SMS |
| 8. ECD Digital Strategy | ROI-driven ecommerce SMS + email | Quote-based | Revenue-tracked SMS for niche DTC |
| 9. Flypost | Klaviyo/Postscript coordinated retention | USD $2,000/mo | Coordinated email + SMS sequencing |
| 10. Threadpoint | Shopify-exclusive email/SMS | Quote-based | Shopify Plus lifecycle automation |
| 11. Magicianly | Revenue-infrastructure lifecycle systems | Quote-based | Deliverability-first SMS/email systems |
| 12. Bambino Agency | UK PECR-compliant SMS | GBP £1,200/mo | UK SMS compliance-first programmes |
| 13. Human | Growth marketing with SMS retention | Quote-based | Early-stage brands scaling SMS + growth |
| 14. Essence of Email | Principal-led boutique SMS/email | Quote-based | Deliverability recovery + migrations |
| 15. Retention Commerce | 100% Klaviyo implementation | Quote-based | Klaviyo-only SMS/email setup |
| 16. Growth Gurus | Retention-led Klaviyo growth | Quote-based | Multi-brand retention programs |
| 17. Adaptic Agency | Profit-first retention systems | Quote-based | Founder-led brand retention systems |
| 18. RELAIN | Behavioral-science CRM retention | Quote-based | Enterprise-grade EU retention systems |
| 19. YOCTO | Subscription-brand lifecycle SMS | Quote-based | Health/wellness subscription retention |
| 20. UN/COMMON | Shopify Plus lifecycle + CRO | Quote-based | Beauty/DTC brand launches with SMS |
| 21. Sidekick | Hands-on boutique retention | Quote-based | Small D2C brands, capped-roster attention |
Frequently Asked Questions
How do I choose an SMS agency rather than adding SMS to my email retainer?
Ask who owns compliance. Email mistakes cost you deliverability; text mistakes carry statutory damages of USD $500 to $1,500 per message under the TCPA, so the person configuring your opt-in language matters more than the person writing the copy. A genuine SMS practice will talk about 10DLC registration, carrier filtering, quiet hours and how consent is captured and stored before it talks about creative. If the answer is only that they will add texts to your existing flows, you are buying email with a second channel bolted on.
What should an SMS programme cost to run?
Retainers for SMS marketing services typically run USD $3,000 to $15,000 per month, with most mid-sized ecommerce brands landing between $5,000 and $8,000, and only two of the twenty external agencies here publish a rate. Budget separately for SMS marketing software licences and per-message costs: sends run roughly $0.008 to $0.03 each plus about $0.004 in carrier passthrough. That is why list quality beats raw contact count, and why a good partner prunes unengaged phone numbers instead of billing you to text them.
How does SMS revenue compare with email?
SMS wins on attention and email wins on efficiency, so most brands need both. Benchmarks put median SMS open rates near 98% with click rates around 19%, against email's far lower open rates, but return per dollar tells a different story: roughly $8 to $12 for SMS versus $36 to $42 for email once per-message costs are counted. The practical read is to use text for time-sensitive, high-intent moments such as cart recovery and drops, and let email carry volume, education and margin.
Do automated flows really outperform one-off campaigns?
Consistently, yes. Flow-based text message marketing averages click rates near 10%, with strong programmes exceeding 16%, roughly double what one-off promotional messages return, because a flow reaches someone at the moment they did something. That is why the sequencing of your first ninety days matters: welcome, abandoned cart, browse abandonment, post-purchase and winback built properly will out-earn a busy campaign calendar built on nothing. Ask which flows a candidate would build first, and why.
Does the agency's location matter for SMS?
It matters less for execution and a lot for regulation. The technical work is remote by nature and several agencies here run distributed teams across continents. What is not portable is consent law: US brands answer to TCPA and CTIA rules and 10DLC registration before any text messages go out, UK and EU brands to PECR and GDPR, and the penalties and opt-in wording differ. Weight experience in the market where your contacts live, not where the agency's office happens to be.
Choosing an SMS Marketing Agency
Start with the consent architecture. Ask every candidate to walk you through how a subscriber joins your list, what they agreed to, where that record lives and how it is proven later. Programmes that fall over legally almost always fall over here rather than in the copy.
Compare like for like on scope. With only two of twenty external agencies publishing rates, the only way to read proposals is to hand every bidder the same brief: subscriber count, send volume, how many flows, whether platform migration is included and who writes the calendar.
Insist on revenue reporting, not open rates. A 98% open rate is a property of the channel, not of your agency. The number that matters is attributed revenue per send and per subscriber, reported next to email so you can see whether SMS is adding revenue or cannibalising it.
Keep retention and acquisition in one conversation. The team texting your buyers should know what your ads promised them. If that sounds like the setup you want, see our growth marketing work, read the latest analysis, or book a call.
