Email & SMS Marketing: Email vs SMS Marketing and How to Use Both Channels Together

What is email and SMS marketing? Email and SMS marketing means running both channels as one plan for the same opted-in contacts: email tells the full story, and a text delivers the short, timely nudge. Used together, each covers the other's weakness. This guide compares email vs SMS marketing, shows which message belongs on which channel, and walks through a two-week campaign that uses both.

SMS marketing: what it adds to your email marketing

SMS marketing is sending promotional or informational texts to people who agreed to receive them. Marketing with SMS is not a replacement for email. It is the fast lane next to it: a text lands on the lock screen, is usually read within minutes, and needs no inbox, no app and no data connection.

SMS in marketing: where texts earn their place

SMS in marketing works best when timing matters more than detail:

• Reminders: an event tomorrow, an appointment in two hours.
• Last calls: early-bird pricing ending tonight, five tickets left.
• Changes: a new venue, a weather closure, a time moved.
• Short offers: one product, one code, one deadline.
• Conversations: a question that invites a reply.

Using SMS for marketing anything longer than a few lines is where it goes wrong. A text that reads like a newsletter is expensive (each 160-character segment is billed), hard to read, and a quick way to collect STOP replies. Marketing SMS should do one thing, and point to an email or a page for the rest.

Email vs SMS marketing: the differences that matter

Email marketing vs SMS marketing is not a contest. They differ in length, speed, cost and law, and those differences decide what each one is for.

Length and format

Email has room for a story: headlines, pictures, buttons, columns, a full event lineup. A text has 160 standard characters per segment and no layout at all. If the message needs a picture to make sense, it belongs in the email.

Speed and attention

People check email in batches and often days later. A text is usually read within minutes. That makes SMS the right channel for anything with a deadline today, and the wrong one for anything people need to read slowly.

Cost

Email is cheap per message; SMS has a carrier cost on every segment. On Linxi, email sent from your own mailbox costs nothing per recipient, and texts are billed at the carrier's rate with no markup, $0.0040 a segment on Telnyx. Ten thousand emails cost nothing per recipient; ten thousand single-segment texts use $40 of balance. Spend the texts where speed pays for itself.

Consent and the law

The two channels are governed by different rules in the US:

• Email (CAN-SPAM): honest sender and subject lines, your physical postal address, and a working unsubscribe link honored within 10 business days.
• SMS (TCPA and carrier rules): prior consent before you text, written consent for marketing, your business name, STOP wording in your messages, and registration of your number for A2P 10DLC.

The practical upshot: you can email a customer who bought from you and did not opt out, but you need their explicit agreement before you text them marketing.

How to use email and SMS marketing together

Email and SMS marketing work best when each message goes to the channel that suits it, and the two are timed to support each other.

Email first, text second

Most campaigns follow the same rhythm. The email goes out first with everything: what, when, where, pictures and the link. Days later, a short text points back to it at the moment that matters: "Early-bird pricing ends tonight. Details in your inbox or at [link]." The email informs; the text prompts.

Don't send the same words twice

Sending an identical message by email and text at the same minute doubles the noise without adding anything. If both channels carry a launch, write the email as the full story and the text as a one-line headline, and space them apart.

Respect each channel's rhythm

People tolerate more email than texts. A weekly newsletter is normal; a weekly promotional text wears thin for many audiences. Promise a text frequency when people sign up ("up to 4 texts a month") and keep it.

An email and SMS marketing strategy, step by step

Here is how a two-week campaign for a ticketed event uses both channels. The same rhythm works for a product launch or a seasonal sale.

1. Two weeks out, email: the announcement, with the full lineup, pictures and a ticket link.
2. Ten days out, SMS: early access for your text subscribers, as a thank-you for opting in.
3. One week out, email: a reminder with new details, such as a schedule or a speaker added.
4. Three days out, SMS: last call on early-bird pricing.
5. The day before, email: a know-before-you-go note with parking, entry and timing.
6. On the day, SMS: "Doors open at 7." Short, timely and useful.
7. The day after, email: thank you, photos and a short survey.

Notice the pattern: email carries detail, texts carry timing, and nobody gets two messages on the same day.

Collecting consent for SMS and email marketing

The cleanest way to build both lists is one form with two separate choices. Email signup and text consent should never share a single checkbox.

For the SMS box, carriers and A2P reviewers look for the same things every time: the box is unchecked by default, it names your business and what you will send, and it says "Message frequency varies. Message and data rates may apply. Reply STOP to opt out, HELP for help," with links to your terms and privacy policy. Record when and where each person agreed. A good platform stores that opt-in record on the contact.

SMS marketing by email: inviting subscribers to text

Your email list is the best place to grow your text list, as long as you ask rather than assume. Send an SMS marketing email that explains what texts you will send and how often, with a link to a signup form or a keyword to text (such as JOIN). Only the people who opt in that way join the SMS list.

Automating email and SMS marketing

Automation is where running both channels in one place pays off. Common SMS email marketing automations:

• Welcome: a form is submitted, a welcome email goes out, and a welcome text follows if the person ticked the SMS box.
• Event or purchase: a ticket is bought, a confirmation email goes out, and a reminder text goes out the day before.
• Follow-up: a campaign is sent, and people who reply get a personal answer while people who do not reply get a gentle second message later.

In Linxi, Flow builds these as a readable flowchart with if-then branches. Its triggers include a form sent, a ticket bought, an account made, a campaign sent, a reply, or no reply at all, and the assistant can lay out a flow from a plain description.

Measuring email and SMS marketing together

Each channel reports different signals, so read them side by side:

• Email: opens, clicks, bounces and spam reports. Opens are an imperfect signal because some mail apps and scanners open messages automatically.
• SMS: delivered, failed (with the carrier's error code), replies and opt-outs.
• Both: clicks on tracked links, and what people did after: tickets bought, bookings made.

Short tracked links are the fairest way to compare channels. Use a different one in the email and the text, and you will see which one actually moved people.

Choosing email and SMS marketing platforms

If you already have an email marketing tool, check whether it does SMS before adding a second one. You can run the two channels in separate tools or in one. Separate tools are workable but drift apart: a person unsubscribes in one and keeps getting messages from the other, and replies end up in two inboxes. SMS and email marketing in one platform keeps a single record per person.

Platforms that combine both include Klaviyo, Omnisend, Brevo and Attentive, and Mailchimp offers SMS alongside email in the countries where it supports texting. Their pricing models differ, so compare the cost of the texts as well as the email plan.

Linxi puts email, SMS and Linxi Network messages in one composer where each channel is a checkbox, so one campaign can go out on all three. Email goes from your own address, with a visual builder, opens and clicks, and a footer with your name, address and unsubscribe link. An email reply lands in the same conversation as that person's texts, and someone who has opted out is never messaged on any channel from a campaign. Texts send at carrier cost; see the campaigns features and the pricing page.

One honest note about Linxi today: you can attach an image to a campaign, but it is not sent with the text yet. That suits the email-first rhythm anyway: put the pictures in the email and keep the text short.

Frequently Asked Questions

What is an email and SMS marketing strategy?

It is a plan that decides which messages go by email, which go by text, and when. A simple strategy uses email for announcements, stories and anything with pictures, and SMS for reminders, last calls and changes on the day. It sets a frequency for each channel, collects consent for each separately, and measures both with tracked links so you can see which one drove the result.

Can I add my email subscribers to my SMS list?

Not without asking them. Agreeing to receive emails is not consent to receive marketing texts, and texting people who never agreed can break the TCPA and get your number blocked. Invite your email list to opt in to texts with a form or a keyword, and add only the people who do.

How often should I send marketing emails and texts?

It depends on your audience, but texts should be rarer than emails. Many businesses email weekly or every two weeks and text a few times a month at most. Whatever you choose, state the text frequency at signup and keep to it. A jump in unsubscribes or STOP replies after a send tells you that you went too far.

What is the best time to send marketing texts and emails?

For texts, daytime in the recipient's time zone, inside the federal 8 a.m. to 9 p.m. window and any stricter state limit, and ideally close to when people can act. For emails, timing matters less because people read them in batches. Test a few send times with tracked links and keep the one that performs best for your list.

What does an email and SMS marketing specialist do?

An email and SMS marketing specialist plans campaigns across both channels, writes the copy, builds the automations, manages consent and lists, and reads the results. In a small business, that is often the owner with a good platform. In a larger one, it may be a dedicated role or an agency.

Should I hire an email and SMS marketing agency?

An agency makes sense when you have budget and volume but no time, or when you sell online at a scale where small improvements are worth a lot. Most small businesses do well running campaigns themselves on a platform that has templates and an assistant to draft copy. If you do hire an agency, make sure the contacts, consent records and accounts stay in your name.

Which email and SMS marketing tools work with Shopify?

Many email and SMS tools connect to Shopify through the Shopify App Store, including Klaviyo, Omnisend and Attentive. For a store, the key is how well the tool reads orders and abandoned carts to trigger messages. Check how each one collects SMS consent at checkout and what it charges per text.

Can I send bulk SMS and email marketing from one tool?

Yes. Many platforms send both, and some let one campaign go out on both channels at once. In Linxi, you tick the channels in the composer, choose lists or tags, and send now, later or a few at a time. Bulk sending still follows each channel's rules: an unsubscribe link and your address in emails, and opt-in, your business name and STOP wording in texts.

Do I need a privacy policy for SMS marketing?

Yes, for US business texting in practice. A2P 10DLC campaign reviewers check that your privacy policy is public, mentions SMS, and states that you do not share mobile numbers or consent data with third parties for marketing. Your terms should cover message frequency, STOP and HELP, and the data-rates disclosure. Linxi can create these pages for your business.

Are the rules different outside the US?

Yes. Canada's anti-spam law (CASL) and the EU's GDPR, for example, have their own consent and record-keeping requirements for both email and texts, and many countries regulate sender IDs for SMS. If you message people outside the US, check the rules where they live, not only where your business is.