Is SMS or email better for following up with leads?

For initial and time-sensitive follow-up, SMS outperforms email significantly. Text messages have a 98% open rate versus roughly 20% for email, and most texts are read within 3 minutes. For longer follow-up sequences, relationship-building content, and colder leads, email becomes more effective. Most service businesses benefit from using both: SMS for the first 1–3 days, email for the longer tail.

What is the average open rate for SMS vs email?

SMS messages have an average open rate of 95–98%, with most being read within 3 minutes of receipt. Email open rates average 20–30% for marketing emails, though transactional emails (like booking confirmations) can reach 50–70%. Response rates follow a similar pattern: SMS response rates of 45% are common, compared to 6–8% for email.

Can small businesses use SMS for marketing legally?

Yes, with proper consent. In the US, the TCPA (Telephone Consumer Protection Act) requires businesses to obtain prior express written consent before sending marketing text messages. In practice, this means including an opt-in on your contact forms and booking pages, and honoring opt-out requests immediately. Platforms like GoHighLevel and HubSpot have compliance features built in.

How do I get customers to opt in to text messages?

The simplest approach is to include a checkbox on your contact form or booking page: 'I agree to receive text messages from [Business Name]. Reply STOP to unsubscribe.' You can also verbally collect consent and log it in your CRM. Make the value clear — tell customers they'll receive appointment reminders and faster responses via text.

What should I send via SMS vs email?

Send via SMS: initial lead responses, appointment reminders and confirmations, urgent follow-ups, and time-sensitive offers. Send via email: detailed proposals, service explanations with images, newsletters, review requests (which perform well in both channels), and longer-form content. If in doubt, SMS for speed and email for detail.

SMS vs. Email for Service Business Follow-Up: Which One Actually Gets Responses

When you send a follow-up message to a new lead, the channel you choose matters as much as the message itself.

SMS messages are opened 98% of the time. Most are read within three minutes. Email averages around 20% open rates, and most messages sit unread for hours — if they're opened at all.

That gap is significant. For a service business where the first response often determines whether you get the job, choosing the wrong channel is choosing to be ignored.

But email isn't dead — it's just misapplied. The businesses getting the best results from follow-up automation are using both channels, strategically, for different moments in the lead journey.

Why SMS Works So Well for New Leads

Think about your own behavior. When your phone buzzes with a text, you look at it. When an email comes in, you'll get to it eventually — or not.

This is true for almost everyone, and it's reflected in the data:

SMS open rate: 95–98%
Email open rate: 20–30%
SMS average read time: under 3 minutes
SMS response rate: approximately 45%
Email response rate: approximately 6–8%

For a new lead who just called or filled out a form — someone who's currently in decision-making mode — the speed and visibility of SMS makes it the right first move.

A text that arrives within 60 seconds of a missed call says: this business is responsive. That impression is set before you've said a word.

Where Email Outperforms SMS

SMS is powerful for short, urgent, conversational messages. It's not the right tool for everything.

Detailed information: If someone needs to understand your process, see your portfolio, or review a proposal, email gives you the space to explain it. A detailed text is awkward; a detailed email is expected.

Longer follow-up sequences: After the first few days, a lead's urgency typically fades. Email is less intrusive for the day-14 or day-21 touchpoint in a nurture sequence.

Colder reengagement: If you're reaching out to a lead who's been quiet for two weeks, a well-crafted email feels less aggressive than a text. It gives them space to respond on their timeline.

Documents and attachments: Quotes, contracts, scope of work documents — these belong in email.

Review requests: Email and SMS both work well here. Email slightly outperforms for Google review requests because the link behavior is more predictable; texts work better for quick feedback surveys.

A Practical Channel Strategy

Here's how most high-converting service businesses split their follow-up between channels:

Day 0 — Immediate (missed call or new form submission): Text. Fast, warm, conversational. Ask what they need or offer a booking link.

Day 1 — If no response: Text. One more short follow-up. "Still happy to help if you have questions."

Day 3: Email. Slightly more detail — who you are, what you do, a result or testimonial, a call-to-action.

Day 7: Text. A simple, direct check-in. "Wanted to make sure this didn't get lost — still here if timing works."

Day 14: Email. Value-add content or a case study. Less sales pressure, more credibility.

Day 21: Text or email. Final active outreach. Make it easy to respond: "If now's not the right time, just let me know — no hard feelings."

After day 21, move to monthly email with low-frequency value content.

Writing SMS That Gets Responses

The biggest mistake in business SMS is writing like a corporate email. Formal language, long sentences, and too much information in a single message kill response rates.

What works:

First name if you have it: "Hey Sarah," outperforms "Hello,"
Short sentences: 2–3 sentences maximum per text
One clear ask or action: don't ask multiple questions at once
Conversational tone: write how you'd text a friendly acquaintance, not how you'd write a press release
Include a link when relevant: a scheduling link in the first message reduces friction significantly

What kills responses:

Writing more than 160 characters (it looks like an email in a text thread)
Sending messages at bad times (before 8am, after 8pm)
Generic openers ("We noticed you visited our website...")
Automated messages that are obviously automated

The goal is to feel like a real person sent it — because you're representing a real person and a real business. Even if the message is automated, the tone should be human.

The Compliance Side

In the US, the TCPA requires consent before sending marketing text messages. In practice, this means:

Include a text opt-in checkbox on your contact forms ("I agree to receive texts from [Business]. Reply STOP to unsubscribe.")
Honor opt-out requests immediately and automatically
Keep records of consent

Platforms built for business SMS (GoHighLevel, HubSpot, Podium, etc.) have compliance features built in. Don't use personal texting apps for business follow-up at scale — you lose the automation, the tracking, and the compliance infrastructure.

The Takeaway

SMS and email aren't competing channels — they're complementary ones. SMS wins on speed and open rates. Email wins on depth and volume.

For a service business where speed-to-lead is a competitive advantage, SMS should be the first touchpoint. For building the longer relationship and handling complex information, email earns its place.

The businesses seeing the best follow-up conversion rates are the ones using both — deliberately, for the right moments — rather than defaulting entirely to one or the other.

Frequently Asked Questions

Can I send business texts from my personal number? Technically yes, but it's not advisable at scale. Using a dedicated business number through a platform gives you automation, tracking, opt-out management, and a clean separation between personal and professional communication.

How do I get a business texting number? Most CRM platforms provide a dedicated phone number as part of the service. Alternatively, you can register a number through Twilio or a similar provider and connect it to your automation platform.

What time of day should I send follow-up texts? Between 8am and 7pm in the recipient's local time zone. Response rates are highest between 10am–12pm and 5pm–7pm. Avoid early morning and late evening even if the message is automated — it affects perception.

Two-way SMS is a core feature of Mustardseed Connect. Every missed call, web form, and lead trigger sends an automatic text from your business number. See how it works.