Invoicing and Texting App for Small Business: One Tool for Both

Service business owners often juggle separate tools for every client interaction: one app for texting appointment reminders, another for sending invoices, a third for booking, and a fourth for email. Each login means another monthly fee, another contact list to maintain, and another place where client history gets siloed.

Yes, you can invoice clients from the same app you use to text them. An invoicing and texting app for small business combines client communication—texts, email, web chat and calls—with pipelines, invoices, booking pages and payment collection in a single shared inbox. Your team sees the full conversation thread alongside the invoice, the appointment history and the intake form, so every interaction has context. Relay is one such platform, built for salons, barbers, med spas and studios that need to manage bookings, follow up with leads, send review requests and bill clients without switching between tools.

Key Takeaways

• A unified invoicing and texting app stores all client communication, appointments, forms and billing in one record, eliminating the need to cross-reference multiple tools.
• Each paid plan includes a shared inbox for texts, email, web chat and calls, plus invoices, pipelines, booking links and appointment reminders by text or email.
• Ready-made playbooks automate follow-up workflows like missed-call text-back, new-lead nurture and review requests, with text-based playbooks available on paid plans.
• You can import contacts from a CSV spreadsheet and connect other systems via a REST API on paid plans, with signed webhooks for custom integrations.
• Pricing starts with a Free plan at $0 for one user with contacts, pipelines and basic forms, then Relay Basic, Starter at $79/month where texting begins, Pro at $199/month with no cap on automations, and Business at $449/month for the most team seats.

Why Service Businesses Need Communication and Billing in One Place

A hair salon sends appointment reminders by text in the morning, then switches to email later to invoice the same client for a product order. The stylist has to open the scheduling app to check which service the client booked, the texting tool to confirm they received the reminder, and the invoicing software to see if the bill was paid. If the client replies with a question—"Can I add a color treatment?"—the answer might live in yet another inbox.

When messaging and invoicing sit in separate systems, your team manually reconstructs context every time a client reaches out. The time cost adds up across dozens of daily interactions, and the risk of missing a payment, a question or a rebooking opportunity grows with every tool in the stack.

A combined platform keeps the appointment, the reminder, the reply, the invoice and the payment status in a single client record. One inbox surfaces texts, emails, web chat and call logs together, so the person responding knows exactly where the conversation left off. Invoices attach to the same timeline as the booking confirmation and the intake form, and the pipeline view shows whether the estimate turned into a paid job.

What to Look for in an Invoicing and Texting App

Not every app that claims "all-in-one" actually closes the loop between first contact and final payment. Here are the capabilities that matter for a service business.

Shared Inbox for Every Channel

Your clients text, email, submit web forms and call. A true unified inbox routes all four channels into one feed, tagged by client, so your team never has to ask "Which app did they use last time?" Each message thread includes the client's contact details, appointment history and invoice status in the same view.

Relay offers one shared inbox for texts, email, calls and web chat. When a lead fills out a web form on your site, the inquiry appears in the same queue as an SMS reply from an existing client. Your team can respond from the app, and every reply gets added to that client's permanent record.

Public Booking Pages with Individual Service Links

Some platforms provide a single calendar page where clients pick from a drop-down menu of services. Others generate a unique booking link for each service, with its own length, price and optional deposit. The second model works better when you share links on social media, in automated follow-up messages or in your bio—clients land on the exact service they want, fill in their details and book in fewer taps.

Relay creates one public booking link per service. You set the service duration, price and deposit requirement once, then share that link anywhere. The booking feeds directly into your calendar, and the client's name, contact and appointment time populate the inbox so you can send a confirmation or a reminder.

Invoices and Pipelines

Texting a client to confirm an appointment is useful; invoicing them without switching apps closes the sale. Look for a platform that lets you create an invoice, mark it as sent, track payment status and tie it to the same client record that holds the booking and the message thread.

Pipelines organize leads and jobs by stage—inquiry, quoted, scheduled, completed, paid—so you know which clients need a follow-up nudge and which invoices are overdue. Relay includes both invoices and pipelines on every plan, including the Free tier, so even a solo operator can manage sales and billing alongside daily communication.

Appointment Reminders by Text or Email

Manually texting every client the day before their appointment wastes time and creates gaps when you forget. Automated reminders reduce no-shows, but only if the reminder system talks to the calendar and the texting channel.

Relay sends appointment reminders by text or email on a schedule you set. Because the calendar, the texting number and the email inbox all live in the same app, the reminder pulls the client's preferred contact method, the service name and the appointment time from the booking record. You configure the timing once—24 hours before, or two hours before, or both—and the system handles the rest.

Ready-Made Follow-Up Playbooks

A playbook is an editable automation that triggers on a specific event: a missed call, a new lead, a completed appointment or a client's 60th day since their last visit. The best platforms ship with ready-made playbooks you can turn on immediately, then customize the message and timing to match your voice.

Relay includes playbooks for missed-call text-back, new-lead follow-up, a review request sent two hours after the appointment and a one-time win-back text 60 days after the last visit. Text-based playbooks require a paid plan because the Free plan does not include texting, but you can run a small number of non-text automations on Free. Starter allows a limited number of automations, and Pro removes the cap entirely.

Intake Forms

Before a new client's first appointment, you need their contact details, medical history, preferences or consent signatures. A form builder that feeds submissions directly into the client record—and into the shared inbox—means no manual data entry and no lost paperwork.

Relay offers intake forms on every plan. Responses appear in the inbox and attach to the client's contact profile, so when the client arrives you have their allergy notes, their preferred stylist and their signature on file.

How an Invoicing and Texting App Works in Practice

Consider a hypothetical med spa with three treatment rooms and a front-desk coordinator. A prospective client finds the spa on Instagram, taps the booking link for a facial and fills out the intake form with her contact details and skin-care goals. That submission lands in the spa's Relay inbox as a new lead.

The coordinator responds by text: "Thanks for booking! We'll send a reminder the day before. Reply any time with questions." The system tags the conversation with the client's name, appointment date and the service she selected. Twenty-four hours before the appointment, Relay sends an automated text reminder. The client confirms with a thumbs-up emoji, which appears in the same thread.

After the facial, the esthetician adds a retail product recommendation to the client's record and creates an invoice for the treatment plus the product. The invoice goes out by email, with a link to pay. The client pays online, and the payment status updates in the pipeline. Two hours later, the review-request playbook sends a text: "How did we do? We'd love your feedback." The client taps the link and leaves a five-star review.

Sixty days pass with no rebooking. The win-back playbook fires once, sending a text: "We'd love to see you again! Book your next facial here." The client clicks the booking link, schedules a follow-up and the cycle repeats—all without the spa owner opening a second app.

Pricing and Plan Structure

Relay offers a Free plan at $0 for one user, with contacts, pipelines, basic forms and email support. The Free plan does not include texting, text reminders or a texting number. Relay Basic is priced at $49/month and provides one inbox for email and web chat, contacts, calendar and booking links, but no texting number and no AI features.

Starter at $79/month is where texting begins, with a limited number of automations and a monthly allowance of texts and emails. Pro at $199/month removes the cap on automations, and Business at $449/month includes the most team seats. Every paid plan includes a set number of team seats and a monthly allowance of texts, emails and AI usage; extra seats cost a flat monthly price each, and usage past the allowance is billed at published rates. You can cap or turn off overage billing in Settings. Full details, including seat counts, allowances and overage rates, are on the pricing page.

If you run multiple businesses, you can add extra locations to a paid plan at half the plan price, up to five. Past five, the agency suite is the next step.

Optional Add-On Modules

AI Front Desk at $149/month (available on Starter, Pro and Business) answers your business phone line, answers common questions from what you've taught it, books appointments against your calendar and captures callers as leads. When a caller needs a person, it alerts your team by email or text and a team member can take over the call from the app; it does not transfer calls to a person or to voicemail. Each AI Front Desk subscription includes a block of talk minutes, then $0.20 per minute after that, with monthly overage never exceeding the module price itself.

Automatic support at $59/month controls how far the AI answers on its own, topic by topic, with hand-offs to a person when needed. Enterprise controls at $499/month on Business plan is set up with the Relay team. None of these modules are required to use Relay.

Branding and White-Label

From Starter, you can add your own logo and colors to booking pages and emails. From Pro, white-label branding removes Relay's name entirely, so every client-facing touchpoint carries your brand.

Comparing an All-in-One Platform to a Multi-Tool Stack

| Capability | Separate Tools (Typical Stack) | Relay | |------------|-------------------------------|-------| | Texting and Email | Different apps, separate inboxes | One shared inbox for texts, email, calls, web chat | | Client Record | Contact details scattered across platforms | Single record with conversation history, bookings, forms, invoices | | Booking Pages | Often a third-party widget embedded in website | Public booking link per service, with price, duration, deposit | | Invoicing | Standalone billing software | Invoices in the same app, tied to client timeline | | Appointment Reminders | Manual or separate reminder service | Automated text or email reminders on your schedule | | Follow-Up Automations | Custom workflows in each tool, or none | Ready-made playbooks: missed call, new lead, review request, win-back | | Team Collaboration | Forwarding messages, shared logins | Shared inbox, all team members see full context | | Import and API | Varies by vendor | CSV import for contacts; REST API and signed webhooks on paid plans |

When you consolidate, you reduce the number of monthly subscriptions, the time spent switching apps and the risk that a message or an invoice falls through the cracks. Your team spends less time hunting for context and more time serving clients.

Integrations and Imports

Relay includes its own REST API on paid plans, plus signed outbound webhooks. The inbound webhook requires an HMAC signature, so connecting to automation platforms like Zapier or Make typically needs a code step. You can import contacts from a CSV spreadsheet, which is helpful when migrating from another system.

Relay does not offer a direct integration with point-of-sale systems, payroll platforms or third-party booking systems. If you need to sync data between Relay and another tool, plan to use the API or a webhook with custom code.

Who Benefits Most from Combining Invoicing and Texting

Service businesses with recurring appointments—salons, barbers, med spas, studios—gain the most. Your clients book, reschedule, ask questions and pay over the course of weeks or months, and every interaction adds value to the relationship. When all that history lives in one app, your team can personalize every message, spot upsell opportunities and follow up at the right moment.

Solo operators benefit from the time savings: one login, one inbox, one place to check whether the invoice was sent and the reminder went out. Teams benefit from shared visibility: the person who answers the phone sees the same client record as the person who sends the invoice, so handoffs are smooth and nothing gets duplicated.

If your business already uses separate tools for each function and the integrations between them work well, you may not need to switch. But if you spend time each day copying information between apps, if clients sometimes get double-messaged because two team members didn't see the same thread, or if you've lost track of which tool holds the authoritative client list, a unified platform cuts that friction.

Setting Up Invoicing, Texting and Booking Together

Start by importing your contact list from a CSV. Relay's contact manager becomes the single source of truth for client names, phone numbers, email addresses and tags. Next, create a booking link for each service you offer. Set the service name, duration, price and optional deposit, then share the link in your Instagram bio, on your website or in follow-up texts.

Configure your appointment reminders: decide whether to send them by text or email, and set the timing—24 hours before, two hours before, or both. Turn on the playbooks you want: missed-call text-back, new-lead follow-up, review request and win-back. Customize the message templates to match your brand voice, then let them run.

When a booking comes in, the client's name and appointment appear in your calendar and in the shared inbox. Send a confirmation, and the conversation thread starts. After the appointment, create an invoice in the app, mark it as sent, and track payment status in the pipeline. If the client texts a question about the invoice, the reply appears in the same thread where you confirmed the booking, so you have full context.

If you want the AI to answer your phone line, book appointments by voice and capture callers as leads, add the AI Front Desk module on Starter, Pro or Business. Teach it your hours, services, common questions and pricing, then forward your business number to the Relay phone line. The AI handles routine inquiries, and when a caller needs a person it alerts your team so someone can take over the call from the app.

How Ready-Made Playbooks Save Time

A playbook is a workflow that triggers automatically when a specific event occurs. Relay ships with four ready-made playbooks, each editable to fit your business:

1. Missed-call text-back: When a call goes unanswered, the system sends a text to the caller within minutes, letting them know you'll call back or inviting them to book online.
2. New-lead follow-up: When a new contact enters the system—via a web form, a booking or a manual add—a welcome message goes out, introducing your business and offering the booking link.
3. Review request: Two hours after an appointment, the client receives a text or email asking for feedback, with a link to your review page.
4. Win-back: Sixty days after a client's last visit, a one-time message invites them to rebook, often with a seasonal offer or a reminder of the service they loved.

Text-based playbooks require a paid plan because texting starts on Starter. You can edit the message, the timing and the trigger conditions for any playbook, or turn it off entirely if it doesn't fit your workflow. Pro removes the cap on how many automations you can run, so you can layer multiple playbooks and custom workflows without hitting a limit.

Frequently Asked Questions

Can I really send invoices and text reminders from the same app?

Yes. Relay combines invoicing, texting, email, web chat, calls, booking pages, appointment reminders and pipelines in one platform. You create an invoice in the app, send it by email, and the client's reply—whether by text or email—appears in the same shared inbox where you manage bookings and conversations. Every interaction ties to a single client record, so your team sees the full history without switching tools.

Do I need to pay extra for texting or invoicing features?

Texting starts on the Starter plan at $79/month. Every paid plan includes a set number of team seats and a monthly allowance of texts and emails; usage past the allowance is billed at published rates, and you can cap or turn off overage billing in Settings. Invoicing and pipelines are included on every plan, including Free. The Free plan does not include a texting number or text reminders. Full details are on the pricing page.

What happens when a client responds to an automated text?

The reply lands in your shared inbox, tagged with the client's name and conversation history. Your team can respond manually, and the back-and-forth continues in the same thread. Playbooks send the initial message, but once a client engages, a person takes over the conversation with full context from prior bookings, invoices and forms.

Can I customize the automated follow-up messages?

Yes. Every playbook is editable. You can change the message wording, adjust the timing—send a reminder 12 hours before instead of 24, or request a review one day after the appointment instead of two hours—and modify the trigger conditions. You can also turn any playbook off if it doesn't fit your business, or create custom automations on paid plans subject to the plan's automation cap (Pro removes the cap).

How do I move my contacts from another system into Relay?

Export your contact list from your current tool as a CSV spreadsheet, then import the file into Relay. The import maps columns like name, phone, email and tags to the corresponding fields in Relay's contact manager. Once imported, those contacts appear in the shared inbox and are available for booking, messaging and invoicing. For ongoing data sync with other systems, use Relay's REST API on paid plans or signed webhooks.

Does Relay integrate with my point-of-sale or scheduling software?

Relay does not offer a direct integration with point-of-sale systems or third-party booking platforms. It includes its own calendar, booking pages, invoicing and client records, designed to replace separate scheduling and billing tools.

When your invoicing, texting, booking and client communication all live in one app, your team works from a single source of truth. You spend less time switching tabs, hunting for conversation threads or wondering whether the reminder went out. Clients get faster, more personalized responses because the person replying sees the full history—last appointment, intake form, invoice status—in one glance. Ready-made playbooks handle routine follow-up automatically, and the shared inbox keeps every message, every booking and every payment in context. Relay was built for salons, barbers, med spas and studios that need to manage the entire client journey without juggling a dozen tools. See the full feature list and plan details at https://gorelaycrm.com.