SMS automation for B2B follow-up that doesn’t feel spammy

SMS is the most underused B2B follow-up channel in the US. It’s also the easiest to ruin. One bad blast and you’re in the same bucket as political robotexts and crypto scams. Done right, it lifts meeting-set rates by 30 to 50% on top of email. Here’s how to actually do it right.

Start with consent, not creativity

TCPA exists, A2P 10DLC registration exists, and the fines are real. Get explicit opt-in, log it, and pass through a compliant gateway like Twilio or Telnyx. If you’re tempted to skip this because "it’s just our existing customers," don’t. We’ve seen $10K fines for less.

The three follow-up moments worth a text

• Right after a demo, before the calendar fades.A short "great chat — sending the recap to your inbox now" beats a chase email three days later.
• Day before a scheduled call.Confirms the slot, drops the reschedule chance to nearly zero. Cuts no-shows in half for most B2B teams we’ve worked with.
• Stuck deal at 14 days of silence.One text. One question. No links. "Hey — should I close this out or is there still life here?" works disturbingly well.

The copy rule

Write it like you’d text a friend. Lowercase is fine. One sentence is fine. No emoji parade, no all-caps subject-line energy, no link unless they asked for one. If your text reads like a marketing email, you’ve already lost.

Timing that works on US business hours

• 10am to 4pm, recipient’s time zone. Outside this window the response rate falls off a cliff and the unsubscribe rate spikes.
• Tuesday through Thursday. Mondays are catch-up, Fridays are checked-out. SF and NYC behave the same here despite what your gut says.
• Never on a holiday, even soft ones.Memorial Day, July 4th week, the Wednesday before Thanksgiving — you’ll regret it.

iMessage versus SMS

For one-to-one founder-led follow-up to existing relationships, sending from a real iPhone via iMessage outperforms anything automated. For scale beyond a couple hundred contacts a month, you need a proper SMS platform. Don’t fake personal — either commit to it or use the right channel.

What to track

Reply rate, not click rate. SMS isn’t a click channel; it’s a conversation channel. If your texts aren’t getting replies, the copy is broken even if your "open rates" look fine. Also track opt-out rate per send — anything over 1% is a warning sign, anything over 3% means stop and rewrite.

How we help at The Nerdish Mic

We set up SMS follow-up for US B2B teams — compliant, wired into your CRM, copy that doesn’t sound like a robot. If your sales team is leaving meetings on the table because email follow-up is going to spam, SMS is the fix. We’ll ship it in two weeks.