Klaviyo Master Platinum
Clutch Global Fall 2025
SMS that buyers want. Not the kind they unsubscribe from.
Compliance-first opt-in. Conversational copy. Behavioural triggers. Coordinated with email so they don't fight each other. Built for ecommerce brands doing $1M to $30M a year.
Trusted by brands and agencies
Checkout · opt-in
Avantera · TCPA flow
Mobile number
+1 (415) 555-0142
Yes, send me SMS updates from Avantera
Up to 4 msgs/mo. Reply STOP to opt out. Msg & data rates may apply.
Confirmation sent
Welcome to Avantera 💧 Reply YES to confirm and get 15% off your first order.
Opt-in done right. Compliance from day one.
TCPA-compliant opt-in flows wired into checkout, popups, and lifecycle. Compliance is a feature, not a checkbox. Your sender reputation and your buyers both benefit.
- TCPA-compliant double opt-in flows
- Consent synced across email + SMS
- Suppression rules to protect deliverability
- Documentation handed to legal on request
Avantera
Live · 9:42 AM
Hey Sarah 👋
Free shipping ends in 2h ⏰
I'm in 💚
Done ✨ Use SARAH20
Messages buyers actually want to read.
SMS isn't email shrunk. We write conversational copy. Short, on-brand, with personality. Clear value, clear ask. Every message earns the next one.
- On-brand voice and tone calibrated with you
- Short-form copy that ships in 24 hours
- Emoji and character limits handled cleanly
- STOP-handling and quiet hours respected
Behavioural trigger · Avantera
Cart abandon · 2-step
Cart abandoned
Trigger · checkout incomplete
Wait · 1 hour
SMS · Quick nudge
“Free shipping ends in 2h ⏰”
If no purchase · wait 22 hours
SMS · Save offer
“15% off if you finish today”
Sends timed to real purchase intent.
We fire SMS based on what buyers actually do. Browse, abandon, replenish, churn-risk. Time delays and quiet hours respected. Every trigger ties to a measurable conversion.
- Behavioural trigger architecture per cohort
- Quiet hours and time-zone aware
- Replenishment timing predicted per SKU
- Cart and browse-abandon flows live
Multi-channel calendar
Email + SMS · this week
SMS and email work together. Not against each other.
Every campaign coordinated across email and SMS so they amplify, not compete. Single calendar. Cross-channel suppression. Each touchpoint has a job.
- Single content calendar across email and SMS
- Cross-channel suppression to prevent fatigue
- Channel sequencing tuned per cohort
- Attribution that respects both channels
SMS report · Avantera
January performance
SMS revenue · this month
Conversion
5.4%
Click rate
28%
Subscribers
12,847
STOP rate
0.4%
Reports that go beyond click rates.
Revenue per send. Conversion attribution. Subscriber health. Monthly reports that show what worked, what didn't, and what we're testing next.
- Revenue per send and per subscriber
- STOP rate, growth rate, list-health metrics
- A/B test results with takeaways
- Monthly and quarterly performance reviews
SMS tuned to your vertical.
Six categories, six different SMS playbooks. Click into your vertical to see the work we've shipped for brands like yours.
Wellness
Replenishment SMS for supplement subscribers.
Beauty
Drop alerts and replenishment for beauty brands.
CBD
Compliant SMS for restricted categories.
Fashion
Drop-day SMS that lands at the right moment.
Food & Beverage
Order updates and subscription reminders.
Home
Style nudges for long consideration cycles.
Klaviyo certified. Plus the rest of your retention stack.
Primary ESP · Master Platinum
Klaviyo specialists.
Six years on Klaviyo. We use Klaviyo SMS as the integrated layer, plus Postscript when the use case calls for it.
Plus the rest of the stack
Curious how we'd run yours?
Want a tour of how we'd run SMS for your brand?
Emails that look great
and actually perform
On-brand, high-performing emails; built in
Figma or your ESP. Designed to convert.
Delivered in 48 hours.
What this looks like, shipped.
How SMS drove $1M+ alongside email for Avantera Health.
Avantera came to us with email-only retention. We layered in SMS — compliance-first opt-in, behavioural triggers, coordinated with their email calendar. SMS quickly became 18% of total retention revenue, with healthy list growth and a 0.4% STOP rate.
“The quality and timeliness of deliverables are most impressive. The team has always been on time and has used ClickUp to organize tasks. The team's quality work and strong account manager have stood out.”
Zack P. Head of Growth, Avantera Health
Proven performance. Verified reviews.
“Optimite offers competitive pricing for the clients. They emphasize on receiving good value for cost, quality work, timely delivery, and flexibility in handling urgent requests, making them a strong choice for email marketing services.”
Read verified reviews
They're always there to help.
Optimite has been a reliable partner, consistently delivering quality work on time. Their team is responsive, proactive, and always available when we need them...
Read full review on Clutch
Our email marketing revenue contributes around 30% of our total store revenue.
Thanks to Optimite's exceptional project management and strategic approach, we've seen email marketing become a major revenue driver for our business...
Read full review on Clutch
They never miss any deadlines and are great with their deliverability.
Optimite's work has helped the client grow and scale their business. The team is reliable and ensures that the client's...
Read full review on Clutch
We have such a great system, which is why I've been working with them for five years.
Optimite has improved email open and click-through rates through better designs and layouts. The team delivers high-quality, on-brand emails with...
Read full review on Clutch
They're attentive to our needs and to the details.
Since working with Optimite, the client has seen reduced costs, increased quality, and decreased overall time. Optimite delivers on time and is flexible in terms of...
Read full review on ClutchThe project management by Optimite has been exceptional, far exceeding our expectations.
Thanks to Optimite's efforts, the client has seen a substantial increase in email marketing revenue, which now contributes around 30% of their total...
Read full review on ClutchThe quality of their work is always excellent.
Thanks to Optimite's efforts, the client has been able to save time and scale their business, exceeding their expectations. Optimite follows a highly organized workflow, enabling them to...
Read full review on ClutchThey're always there to help.
Optimite has been a reliable partner, consistently delivering quality work on time. Their team is responsive, proactive, and always available when we need them...
Read full review on ClutchOur email marketing revenue contributes around 30% of our total store revenue.
Thanks to Optimite's exceptional project management and strategic approach, we've seen email marketing become a major revenue driver for our business...
Read full review on ClutchThey never miss any deadlines and are great with their deliverability.
Optimite's work has helped the client grow and scale their business. The team is reliable and ensures that the client's...
Read full review on ClutchWe have such a great system, which is why I've been working with them for five years.
Optimite has improved email open and click-through rates through better designs and layouts. The team delivers high-quality, on-brand emails with...
Read full review on ClutchSMS questions, answered.
The questions buyers ask before they hire us for SMS work.
Klaviyo SMS, Postscript, Attentive, and most other major SMS tools. We're a Klaviyo Master Platinum Partner so the Klaviyo integration is deep, but we work natively in any platform you're already using. If you're picking a platform from scratch, we can advise during the discovery call.
TCPA in the US, GDPR in the EU, CASL in Canada, plus category-specific rules for restricted verticals like CBD. Compliance is built into our consent flows, copy review, and frequency rules. Not bolted on as a separate checklist.
Not the way we run it. Most agencies treat email and SMS as separate channels and the buyer pays the price. We run them as one connected program with shared segments and shared send logic. Email and SMS reinforce each other instead of competing for attention.
Aggressive enough to drive real revenue, calibrated enough to keep opt-out rates low. We test frequency by segment, by vertical, and by message type until the math actually works. Most brands underuse SMS by 3x to 5x. We find your ceiling without going past it.
Yes. SMS list growth is a deliberate part of how we work. Opt-in mechanics built into welcome flows, post-purchase, popups, and high-intent moments. We treat SMS list growth as core craft, not a checkbox on a popup form.