SMS marketing has the highest open rate of any marketing channel - consistently above 90% compared to 25-35% for email. For weight loss coaches, that accessibility makes text messaging a powerful tool for both client retention and prospect nurturing. The catch is that SMS marketing carries strict legal compliance requirements, and the intimate nature of text messaging means the content strategy is different from every other channel.
A fitness VA manages the SMS marketing workflow with an understanding of both the compliance requirements and the tone that works in this format. Here is how the system is built and managed.
Platform Selection and Compliance Setup
SMS marketing is regulated under the Telephone Consumer Protection Act (TCPA) in the US and similar laws internationally. Sending unsolicited commercial texts is illegal and carries significant fines. A VA sets up the SMS program with compliance as the starting point, not an afterthought.
Platform selection - Common SMS platforms for coaching businesses include Klaviyo (if the coach is already using it for email), SimpleTexting, Attentive, and SlickText. The right choice depends on list size, integration needs, and whether the coach wants to manage SMS and email from the same platform. A VA evaluates options and recommends based on the coach's existing tech stack.
Opt-in infrastructure - Every subscriber must explicitly consent to receive marketing texts. Acceptable opt-in methods include:
- A checkbox at checkout or program enrollment (pre-checked is not compliant)
- A keyword opt-in (text "JOIN" to a short code or 10-digit long code)
- A form on the website or landing page with clear disclosure that texts will be sent
- A double opt-in confirmation text after the initial opt-in
A VA builds the opt-in flow and writes the compliance disclosures that accompany each method. The disclosure must clearly state the type of messages being sent, the message frequency, and that standard message and data rates apply.
Opt-out management - Every SMS must include an easy opt-out mechanism. "Reply STOP to unsubscribe" is standard. A VA confirms the platform handles opt-outs automatically and removes opted-out contacts from all future campaigns.
Campaign Design and Messaging Strategy
SMS is not email. Messages must be brief (160 characters for a standard SMS, though most platforms support longer messages via MMS), immediately valuable, and appropriate for the medium. Sending promotional blasts to a text list the way a coach would send an email newsletter is a mistake that produces unsubscribes rapidly.
For weight loss coaches, the SMS messaging strategy separates into two categories:
Prospecting sequences - For leads who opt in via a keyword or website form, a VA builds a short nurture sequence that moves them toward a discovery call or program enrollment:
- Day 0: Welcome text with the promised resource or offer
- Day 2: A single tip or insight relevant to their stage in the journey
- Day 5: Soft offer with a link to book a call or join the program
- Day 10: Final follow-up with a specific deadline or incentive
These sequences are kept to 4-6 messages maximum. Longer prospecting sequences via SMS produce high unsubscribe rates.
Client retention texts - Existing clients who have opted in can receive accountability check-ins, session reminders, milestone congratulations, and group coaching schedule reminders via text. This is where SMS genuinely shines for weight loss coaches - a brief, warm check-in text on a difficult day can reinforce commitment in a way that no email or social post can replicate.
For ongoing promotional campaigns, a VA creates monthly SMS schedules with a maximum of 2-4 messages per month. More than that and the list starts shrinking. Content for promotional texts might include: enrollment opening announcements, event reminders, free resource drops, and time-sensitive offers.
For a complete list of marketing channels and tasks a fitness VA manages, see the fitness virtual assistant tasks list.
List Building and Ongoing Management
An SMS list grows differently from an email list. High-intent opt-in points perform better than broad promotional opt-ins. A VA builds list growth by:
- Adding an SMS opt-in checkbox to the lead magnet delivery page (someone who just downloaded a free resource is warm enough to consider opting into texts)
- Promoting the text keyword on Instagram Stories with a swipe-up or DM CTA
- Including an SMS opt-in in post-webinar follow-up sequences for attendees who showed high engagement
- Offering an "SMS-exclusive" perk (a bonus resource, early enrollment access) to incentivize the additional opt-in
List management is ongoing. A VA monitors unsubscribe rates (above 1-2% per campaign is a signal to reduce frequency or adjust content), click-through rates on links included in messages, and any spam complaints escalated by the carrier.
Segment management is important. The VA separates the list into: active prospects, current clients, past clients, and general subscribers. Each segment gets different messaging frequency and content. A past client who completed the program gets a different reactivation campaign text than a cold prospect who downloaded a lead magnet six months ago.
Monthly reporting covers list size, growth, unsubscribe rate, click rate, and attribution for any conversions driven by SMS traffic.
FAQ
Is SMS marketing compliant for weight loss coaches? Yes, as long as explicit opt-in consent is obtained before sending any commercial messages. A VA who manages this correctly from the start eliminates the compliance risk. Coaches should not import phone numbers from any source other than confirmed opt-in forms.
What tone works best for weight loss coaching SMS campaigns? Conversational, warm, and direct. SMS reads like a personal message even when it is automated, so the copy should sound like it comes from a real person. First-person voice, brief messages, and a single clear ask per text outperform formal or sales-heavy copy every time.
Can SMS replace email for weight loss coaches? No - the two channels serve different functions. Email supports longer content, sequences, and detailed information. SMS delivers short, high-priority messages with near-guaranteed opens. Coaches who use both in a coordinated strategy get the best results from each channel's strengths.
What time of day should weight loss coaching SMS messages be sent? Mid-morning (9:00-11:00 AM local time) and early evening (6:00-7:00 PM local time) tend to produce the highest engagement. TCPA regulations prohibit sending messages before 8:00 AM or after 9:00 PM in the recipient's local time zone. A VA configures the platform to send within compliant windows and in the recipient's time zone where possible.
If you are ready to add SMS marketing to your client communication and marketing stack, the guide on how to hire a fitness virtual assistant covers how to find a VA with this specific skill set.