SMS Marketing

SMS marketing that actually opens.

Reach your customer list where they actually look. SMS open rates are 5x higher than email — send seasonal offers, reactivations, and review requests from your business number.

Start Reaching Customers See how it works

SMS open rates are 5x higher than email

An SMS marketing campaign builder showing audience segmentation, message preview, and send confirmation.

The problem

You have a customer list. You're not using it.

Dormant customers don't come back unprompted.

They'd use you again — if they remembered you exist. A text from a trusted number does that.

Seasonal services don't self-promote.

Aeration in fall. Snow contracts in October. The first crew to text wins the booking.

Email has stopped working.

20% open rates. 2% clicks. Your customers' inboxes are noise. Their text messages aren't.

How it works

Idea to sent campaign in 10 minutes.

Pick the audience.

Filter by service type, last visit, tags, or recurring status. "All weekly mowing customers" or "inactive 90+ days" are two clicks each.

Write the message.

Two sentences. Your business name auto-prefixed. Opt-out link auto-appended. Templates ready for reactivation, seasonal offers, and review requests.

Send. Replies land in your inbox.

One tap sends to your segment. Replies ("yes please" / "tell me more") land in your shared inbox, attached to the customer record.

Start Reaching Customers

No credit card required · 14-day free trial

Compliant by default

Sent the right way, automatically.

SMS marketing rules are real and carriers enforce them. Grunlo handles the compliance so you don't have to think about it.

Registered business number — messages send from your own compliant number, not a random shortcode
Consent tracking — per-customer opt-in stored with timestamp; non-consented customers are excluded automatically
Auto opt-out — STOP replies suppress that customer from future campaigns instantly
Quiet hours — campaigns send 9 AM–7 PM in the customer's local time
Throttled delivery — large sends spread across time to avoid carrier filtering
Your brand, your number — customers see your business name, not a marketing platform

See our messaging policy →

SMS marketing settings showing compliance status, consent stats, and quiet-hours configuration.

Works even better with

Pair with these for a complete outreach system.

Dedicated business number

Required for SMS marketing. Get your own local number that customers recognize and trust.

See dedicated number →

Missed-call text-back

Capture leads who couldn't reach you. They already know your number — prime audience for follow-up campaigns.

See text-back →

Grow revenue

SMS marketing is one lever. See the full picture: estimates, referrals, and missed-call recovery.

See growth tools →

FAQ

SMS marketing questions, plain answers.

Everything you need to know before getting started.

Three normal paths: (1) They opted in via your portal or request form. (2) You collected consent during onboarding — paper form or email. (3) They texted you first. Grunlo tracks the source and timestamp so you have an audit trail.

You fill in your business info (name, EIN, use case). We handle the carrier paperwork. Approval typically takes 1–3 weeks and runs in the background while you set up the rest.

Each SMS costs a fraction of a cent. Your plan includes a monthly allotment; overages are billed at-cost. For most field service businesses, the included allotment is more than enough.

Not yet, but it's on the roadmap. Today you can send to different segments and compare reply rates to iterate on what works.

They're excluded from campaigns automatically. They still receive service messages (job notifications, invoice receipts) because those don't require marketing consent.

Use the customer list you already have.

Start the trial today. Registration runs in the background while you set up — you'll be sending campaigns in a few weeks.

Start Reaching Customers

No credit card required · 14-day free trial