A good loyalty email marketing message starts with a decision: what information helps that customer at that moment? It can be an explanation of a benefit, usage guidance, or a relevant reminder. Subject, content, and destination need to work together so the person understands why they received the message and what they can do with it.
For store, e-commerce and relationship managers, the work involves more than writing an offer. You must select the audience, verify program data, manage delivery, and measure what happens after contact. This guide organizes those decisions without relying on a universal send time or a promise of conversion.
Define a purpose and an audience for each message
A campaign may aim to explain the program to new participants, guide customers with an available benefit, or communicate a voucher. Choosing a purpose makes it easier to decide who should receive the email and what information needs to appear.
Write the goal in a verifiable sentence: “help participants with an available voucher understand where to use it.” Then describe inclusion and exclusion criteria. Those who have already used the voucher, have the benefit canceled, or requested to stop promotional messages should not remain in the same send.
The segmentation in the loyalty program helps organize audiences. Start with data the operation can keep correct, such as program participation, recorded purchase, and benefit status. A complex segment based on incomplete information can make the content less reliable.
Separate transaction information from the return offer
Order confirmations and delivery notices address transaction needs. Promotional messages present an opportunity for relationship or purchase. Do not hide essential order information inside a campaign and do not turn an operational notice into an offer the recipient did not expect.
In the loyalty program, a message can inform the benefit generated by the purchase. The text should distinguish already released balance from pending credit and explain the relevant conditions for use. This care reduces the risk of the customer arriving at the checkout or portal expecting something that is not yet available.
For customers who stopped buying, the intent changes. customer recovery requires an assessment of history and the context of disengagement. Repeating the same promotion for new participants, frequent customers and inactive ones fails to consider these differences.
Compose an email that can be understood on mobile
The reader should recognize the company and understand the purpose without needing to zoom or look for hidden terms. Organize the message with a simple hierarchy:
- Recognizable sender: use an identification consistent with the brand the customer knows and a reply address accompanied by the team.
- Specific subject: describe the main information. Do not announce “last chance” if there is no real deadline.
- Complementary preview text: add context to the subject instead of repeating it.
- Contextual opening: explain why that customer received the contact.
- Benefit and conditions: inform what is available, how to use it and which restrictions matter for the decision.
- Next step: use a destination consistent with the message, such as benefit inquiry, and keep customer service and unsubscribe options easy to locate.
Avoid placing all information in a single image. Keep essential content in text, describe relevant images with alt text and check readability with images disabled. The link must also lead to a mobile-usable experience.
In review, simulate missing fields. A blank name or an incorrect balance should not produce a broken sentence. Personalization only helps when the data and context are correct.
Manage delivery before increasing send volume
A well-written campaign can still face delivery issues. Google’s guidelines for personal Gmail accounts address authentication, reputation and unsubscribe. For all senders, they indicate SPF or DKIM; for bulk senders, SPF, DKIM and DMARC. These mechanisms help verify message origin.
Google also requires one-click unsubscribe for marketing and subscription messages within the scope of bulk senders, plus a visible link in the body. This technical mechanism is not limited to writing “unsubscribe” in the footer. The team responsible for sending should verify implementation and applicable requirements for the operation in the official Gmail guidelines.
From a management perspective, maintain a base of people who expect to receive the communication, handle delivery failures and honor stop requests. If the infrastructure is operated by a vendor, agree on who monitors these signals and who fixes issues. Do not assume that hiring a tool resolves all process responsibilities.
Choose frequency based on the customer context
There is no best day or time that fits every program. Start with a hypothesis based on the audience’s routine and the message’s purpose. A voucher-available notice relates to the event; an educational communication may follow a different rhythm.
Also consider contacts sent via other channels. Receiving an email after several similar WhatsApp notices can seem pushy, even if each team respected its own schedule. Record the campaigns’ purpose and establish priorities when two contacts compete for the same person’s attention.
If testing alternatives, change one relevant variable at a time, such as subject or clarity of instruction. Use comparable groups, keep the remaining conditions consistent and define the metric before starting. This is an evaluation method; its execution depends on the tools available and does not assume an A/B testing feature integrated into Smartbis.
Measure beyond email opens
Opens can help observe trends, but should not alone decide whether a campaign worked. Apple states that Mail Privacy Protection can prevent senders from knowing if the message was opened. Therefore, a recorded or missing open does not necessarily equal reading behavior.
Organize analysis in stages and keep the denominator consistent when comparing campaigns:
| Stage | What to observe | Limit of interpretation |
|---|---|---|
| Delivery | Messages accepted and failures reported by the sending service | Acceptance does not prove presence in the primary inbox nor reading |
| Access | Recipients who clicked the main destination, when measurement is available | An isolated click does not confirm redemption or purchase |
| Benefit usage | Redemptions or vouchers used in the defined period | Benefit usage does not automatically equate to a new sale |
| Repurchase | Customers who made a valid new purchase within the chosen window | A subsequent purchase after the send does not prove the campaign’s causal effect |
| Contact quality | Unsubscribes, complaints and inquiries received | Growth in sends can mask a deterioration of the experience |
For example, click rate can be defined as unique recipients who clicked the main link divided by recipients with recorded delivery, multiplied by 100. Use the same definition across periods and consider the limitations of available tracking.
Before evaluating repurchase, choose a window compatible with the business cycle and determine how to treat cancellations and returns. To understand the additional effect of a campaign, a simple before-and-after comparison may be insufficient: price changes, seasonality and other offers also influence the result.
Connect the campaign to the loyalty program
In Smartbis, the documentation on marketing automation describes communications by email, WhatsApp and portal, according to the configured channels, linked to program events. Meanwhile, the return reports support monitoring of customers, benefits, redemptions and repurchase.
Before designing a campaign, confirm which events, fields, conditions and reports are available in the operation. The strategy may require additional analysis by the team; it is not appropriate to assume that every audience slice, test or attribution model is ready on the platform.
A good first implementation has a limited purpose, verified data and an assigned owner. Review sender, subject, content, benefit conditions, link destinations and unsubscribe. Then monitor both commercial response and questions and refusals to decide the next adjustment.
Sources consulted
Checked on September 26, 2026: the Google guidelines for email senders underpin delivery and authentication precautions; Apple’s Mail Privacy Protection documentation explains the limit of observing opens. Smartbis’ official pages about automation and reports, linked in the article, were used to verify the product’s scope.
To assess the use of emails connected to your program’s benefits, start your loyalty program in Smartbis.