Mass Texting with
Dynamic Keyword Personalization.
Send to thousands. Read like one. Dynamic keywords pull each contact’s name, location, service type, timeline, and last interaction into your message at send time. OTTO intercepts every reply automatically — routing hot contacts to your team, cold contacts to nurture, and opt-outs to instant compliance. Bulk reach. Personal feel. No manual follow-up.
Bulk SMS
Dynamic Keywords
Reply Automation
Re-engagement Campaigns
Seasonal Promotions
1-to-1
feel at any list size
24/7
OTTO reply automation
How the full campaign works
You Write the Template.
OTTO Sends It, Personalizes It,
and Works Every Reply.
01
Build your segment — choose your keywords
Select contacts from your opted-in list — full list, a segment by service type, a geo filter by zip code, or contacts tagged by a prior OTTO interaction. Write your message template with dynamic keyword placeholders. Map each keyword to a field in the contact record. Preview the personalized output for a sample contact before sending. Schedule the send or trigger immediately.
Segment by tag, service, geo, or prior interaction · Preview before send · Schedule or immediate
02
Personalized messages sent — each reads as 1-to-1
TextingOnly renders each contact’s personalized version at send time and dispatches from your dedicated 10DLC-registered number. Carrier throughput is managed automatically — large sends are paced to comply with carrier requirements without manual rate management. Every message is sent from the same number your contacts already recognize from prior OTTO interactions.
10DLC registered · Dedicated sending number · Carrier-paced · MMS capable
03
OTTO routes every reply — automatically, 24/7
Every reply — YES, NO, STOP, a question, a custom keyword — hits OTTO first. YES or positive reply triggers the ITR qualification flow, Prepare Caller message, and lead alert to your team. NO triggers a graceful opt-down with a follow-up sequence at a longer interval. STOP triggers immediate compliant opt-out. No reply triggers a timed follow-up sequence. Not a single contact falls through the cracks.
YES → Prepare Caller + alert · NO → opt-down + nurture · STOP → instant opt-out · Silence → follow-up
Any Field OTTO Captured
Can Become a Dynamic Keyword.
👤Identity Fields
First name, last name, company name. The simplest personalization — “Hi Sarah” vs “Hi there” — increases open-to-reply rates measurably. Already captured at opt-in for every contact in your list.
📍Location Fields
City, zip code, neighborhood, service area. “We’re running a special in Towson this week” outperforms “We’re running a special in your area.” Geo precision signals relevance at a glance.
🔧Service or Product Interest
What OTTO captured during the original opt-in — HVAC, roofing, new vehicle, kitchen remodel. The message references their specific interest, not a generic category. Converts dramatically better.
📅Last Interaction Date
“It’s been 6 months since your estimate” or “Your last service was in March.” Acknowledging the relationship history positions your message as a follow-up, not a cold blast.
🏷️Segment Tags
Tags applied during prior OTTO interactions — “interested in financing,” “owns not rents,” “timeline under 3 months.” Segments get different message angles based on declared intent. One list, multiple campaigns.
💬Custom Fields
Any field you configure in the contact record — vehicle year and model, property type, insurance carrier, preferred language. The more OTTO captures at opt-in, the richer the personalization for every future send.
Compliance — the non-negotiable
Bulk SMS Only Works When
Every Contact Has Opted In.
Mass texting is only legal to opted-in contacts. TextingOnly is a 10DLC-registered platform — every message goes out through your registered brand and campaign, which carriers and the CTIA require for any business SMS program. Every contact in your list needs a documented SMS opt-in: a specific timestamp, the channel through which they opted in, and the message that was pre-filled when they consented. TextingOnly’s inbound entry points (QR codes, SmartLinks, keyword flows) capture and store this documentation automatically at every opt-in.
✅10DLC Brand & Campaign Registration
Required by all major US carriers for business SMS. TextingOnly handles registration for your brand and campaign — you don’t manage this directly. Every message routes through your registered identity.
📋TCPA-Documented Opt-Ins
Every contact who opts in through a TextingOnly entry point has a documented consent record — timestamp, method, message content. STOP is honored immediately and logged. Audit-ready at all times.
🚫Compliant Opt-Out Handling
STOP triggers immediate opt-out, logged with timestamp. The contact is removed from all active sequences and excluded from future sends automatically. No manual list management required.
Questions about
Bulk SMS with Dynamic Keywords.
How many contacts can I send to in one campaign?
There’s no hard contact limit per campaign in TextingOnly. Large sends are paced automatically to comply with carrier throughput requirements — this happens behind the scenes without you managing send rate manually. For very large lists, sends can be scheduled in batches or staged over time. The platform manages carrier compliance for volume automatically.
What if a dynamic keyword field is empty for some contacts?
You set a fallback for every keyword. If {first_name} is empty, the fallback might be “there” — so the message reads “Hi there” instead of “Hi .” Fallbacks are configured per keyword when you build the template. You can also filter your send to only include contacts where specific fields are populated, so you only send the personalized version to contacts who have that data.
Can I include an image or link in a bulk SMS campaign?
Yes. TextingOnly supports MMS in bulk sends — you can include a brand image, offer graphic, or coupon alongside the text. Links can also be included — shortened and tracked so you see click-through rate per campaign. Dynamic keywords work in the text portion of MMS messages as well.
What makes this different from a generic mass text platform?
Three things. First, dynamic personalization at send time — messages read as individually written. Second, OTTO reply automation — every reply is handled automatically, not dropped into an unmonitored inbox. Third, 10DLC compliance infrastructure — sends go through your registered brand and campaign, not a shared pool. Most commodity bulk SMS tools give you the send. TextingOnly gives you the send, the reply automation, the compliance layer, and the attribution — end to end.
Related features & reading
Three ways to get started
Three ways to get started.
Fastest takes 30 seconds. No form, no login — just OTTO responding to a real reply in your Messages app.
Fastest · No Form
Try OTTO Live
See OTTO respond to a bulk SMS reply in real time. 30 seconds in your Messages app. No form or signup required.
Live demo →
Most Popular · Proof of Value
Run a Pilot
We configure a personalized bulk SMS campaign for your actual contact list. Real contacts, real personalization, real replies — you see the data before you commit.
Start the pilot →
30 Minutes · Your List
Get a Walkthrough
We map the dynamic keyword strategy to your specific contact data and campaign goals — tailored to your vertical and list composition.
Schedule a call →
What is Mass Texting with Dynamic Keyword Personalization?
Mass texting with dynamic keyword personalization is the practice of sending bulk SMS campaigns where each message is automatically personalized with contact-specific data — including first name, city, service type, last interaction date, and declared interest — at the moment of send. The result is a personalized message delivered to every contact on the list, even when sending to thousands simultaneously.
How does TextingOnly’s bulk SMS personalization work?
TextingOnly’s bulk SMS platform uses dynamic keyword placeholders in a message template. When the campaign sends, TextingOnly pulls each contact’s data fields — name, location, service interest, segment tags — and renders a unique version of the message for every recipient. Every send goes through a 10DLC-registered brand and campaign number. OTTO intercepts every reply automatically, routing YES responses to the Prepare Caller flow, NO responses to nurture sequences, and STOP to immediate opt-out compliance.
What is OTTO reply automation?
OTTO is TextingOnly’s automated response engine. After a bulk SMS campaign sends, every reply — YES, NO, STOP, a question, or silence — is handled by OTTO without manual staff involvement. YES triggers ITR qualification, a Prepare Caller message naming the rep and their number, and a simultaneous lead alert to the team. This drives first-call answer rates of 50%+ on OTTO-qualified leads versus under 15% on cold callbacks.
Is TextingOnly bulk SMS compliant with TCPA?
Yes. TextingOnly only supports bulk SMS to opted-in contacts with documented consent records — timestamp, opt-in method, and message content logged at every entry point. All sending goes through 10DLC-registered brand and campaign IDs as required by US carriers. STOP triggers immediate opt-out with timestamp logging. TextingOnly’s entry points (QR codes, SmartLinks, Click-to-Text) capture and store TCPA-compliant consent automatically.