Key Takeaways
- Every email should have a clear reason to exist, meet the recipient at the right moment and offer enough value to earn their attention.
- Audience definition, segmentation and personalization make messages more relevant by aligning content with a recipient’s needs, behavior and stage in the customer relationship.
- Clear objectives, focused calls to action and consistent paths from subject line to landing page help recipients understand what to do next.
- List hygiene, sender authentication, deliverability monitoring, permission and cross-channel coordination protect trust and help useful messages reach the inbox.
- Testing and outcome-based measurement show what resonates, connect email activity to business results and guide the next optimization.
Most marketing teams will tell you they don’t need another email to send. They need a clearer reason for each email to exist.
When an email meets a prospect at the right moment, answers the question in front of them or helps a new customer take the next step, it can move the relationship forward without adding noise. That’s the real work of a strong email program: making each message feel timely, useful and actually worth opening.
It can support education during an evaluation, help a new customer get started, maintain ongoing engagement and prompt action when interest or activity changes for the worse.
That usefulness can also create business value. Axis Intelligence Research reports that email marketing generates an average return of $36 to $42 for every $1 spent in 2026, based on its analysis of current industry research. Reaching that kind of return requires thoughtful decisions about audience, content, timing, deliverability, consent and measurement.
In this 10-step checklist, we’ll cover some of the top email marketing best practices for building stronger campaigns, from audience selection and personalization to deliverability, compliance, testing and measurement.
Define the Audience and Objective Before Creating the Email
The fastest way to make an email feel irrelevant is to write it with everyone in mind. The first step in avoiding that is to decide who should receive the message and what it needs to help them do.
That decision gives the campaign direction, from the information included in the message to the action it asks recipients to take.
Before building the email, consider:
- Who is the message intended for?
- Why does this audience need the information now?
- What does the organization want the email to accomplish?
- Which contacts should be excluded from the send?
A prospect evaluating a solution may need educational content or a comparison guide, while a customer approaching renewal may need account-specific information and a clear path to renewal.
The audience definition should also account for exclusions. Recent purchasers, contacts already working with the sales team, people who have completed the desired action and recipients who have opted out may all need to be removed from a particular communications send.
✅ Checklist: Define the audience, campaign objective, primary CTA and exclusion criteria before drafting the email.
Segment by Behavior, Context and Lifecycle Stage
A list can look organized while still sending the wrong message to the wrong person. Segmentation helps teams use the signals they already have to make each communication more relevant.
Useful signals can include:
- Lifecycle stage
- Website activity
- Content engagement
- Purchase or subscription history
- Account characteristics
- Previous email activity
- Stated preferences
The right segments depend on the purpose of the program. Georgia United Credit Union, for example, developed product-specific onboarding programs for checking accounts, credit cards and auto loans. Each program was tailored to the member’s particular account, with information about relevant features, product use and payments. Georgia United also built a “next best product” program that used members’ current products and credit information to determine which offer they received.
A simple test can show whether a segment is doing useful work: Would this group receive different content, offers, timing or follow-up because of the characteristic used to define it? If the answer is no, the segment may not be specific enough to affect the campaign.
✅ Checklist: Build segments around signals that change the recipient’s experience, then document why each segment receives different content or follow-up.
Match the Message to the Recipient’s Situation
Personalization gains attention when it improves or re-engages the recipient’s experience. That improvement should be based on something the organization actually knows, such as previous content engagement, browsing behavior, purchases, account information, preferences or interactions with Sales or customer service.
These signals can shape the subject matter, recommendations, calls to action or timing of a message. A first name may make an email look personal, but relevant content gives the recipient a reason to keep reading.
Personalization should go beyond inserting a recipient’s first name into the subject line. Using information about a person’s interests, behavior or relationship with the organization can make the content itself more relevant, such as recommending a resource related to a topic they recently explored or adapting a CTA based on an action they have already taken.
Consider the difference between sending every prospect the same product overview and sending a prospect who has repeatedly engaged with a particular topic a more detailed resource related to that interest. The second approach gives the recipient a reason to continue interacting with the organization.
Personalization also needs a fallback. When the data required for a personalized element is unavailable or incomplete, the email should still read naturally and offer relevant content. A defined fallback ensures that contacts without sufficient data still receive a complete experience.
✅ Checklist: Use reliable data to personalize the message, define a useful fallback and review the email as a recipient would experience it.
Give Every Email a Clear Purpose and Next Step
If a reader has to guess what an email is about or what to do next, the message has already made the job harder. That means they’ve likely moved on or deleted it altogether. Give the recipient a clear reason to read and a clear action to take afterward so there is no question.
Begin by identifying what the email needs to accomplish, then make the content and call to action support that objective.
The purpose might be to educate, encourage a purchase, support onboarding, drive registration, promote a relevant product or prompt a conversation with Sales. A nurture email may encourage a prospect to explore a detailed resource. An onboarding email may ask a new customer to complete a specific setup step.
The CTA should follow from that purpose. Multiple links can work when they support the same objective, but unrelated calls to action can compete for attention and make the next step less clear.
The rest of the email should reinforce the action. The subject line and preheader should accurately introduce the message. The body copy should give the recipient enough context to act. The landing page (whatever page or resource on your site that may be) should continue the same message. When these elements work together, the path from opening the email to completing the intended action is clear.
✅ Checklist: Give each email one primary objective, one clear next step and a consistent path from subject line to landing page.
Protect List Quality and Sender Reputation
A large email list can look like a success on a dashboard while quietly weakening the program. If you’re dealing with invalid email addresses, high bounce rates, spam complaints and sustained low engagement, it can signal problems with an email program and affect sender reputation, which can be very problematic.
The goal is a list that supports useful communication rather than a database inflated by contacts who never actually engage.
Regular list hygiene should include:
- Removing invalid addresses
- Processing hard bounces
- Monitoring soft bounces
- Reviewing inactive contacts
- Identifying recipients who should no longer receive particular communications
- Monitoring spam complaints and other negative engagement signals
Teams should also keep sending volume and frequency consistent. Sudden increases can make performance harder to understand and may affect the program’s overall health.
Visit Myrtle Beach is a good example of why list size alone can be a poor measure of email health. The organization had built a list of more than 770,000 subscribers, but only about 4% regularly opened its emails. After removing inactive and improperly sourced contacts, correcting invalid addresses and focusing sends on active subscribers, the list was reduced to about 246,000 contacts, increasing open rates by 230% and click-through rates by 307%.
Regular list maintenance helps teams keep their audiences current and focus email communication on contacts who should continue receiving it.
✅ Checklist: Review inactive contacts, bounces, complaints and source records on a recurring schedule, then document the rules for suppressing contacts.
Make Inbox Placement Part of the Campaign Strategy
An email cannot create results if an inbox never sees it in the first place. Deliverability starts before a message is sent, and the sending domain, audience quality, sending patterns and campaign setup all contribute to whether it reaches people’s inboxes.
Start by confirming that the sending domain is properly authenticated. Sender Policy Framework (SPF), DomainKeys Identified Mail (DKIM) and Domain-based Message Authentication, Reporting and Conformance (DMARC) are the primary email authentication standards marketers will encounter. They help receiving providers verify that messages come from an authorized sender. Google recommends these authentication methods for all senders and requires them for bulk senders meeting its Gmail volume threshold.
Marketers should also monitor the health of the email program itself:
- Sending Volume: Plan significant increases in volume and monitor performance as the change is introduced.
- Sending Frequency: Review how often recipients receive messages and watch for signs of over-mailing.
- List Quality: Remove invalid addresses and manage persistently inactive contacts.
- Spam Complaints: Monitor complaint rates for signs that audience targeting, content or frequency needs attention.
- Campaign Setup: Check links, formatting, rendering and other technical details before sending.
- Performance: Review delivery, bounce and engagement trends after the campaign goes out.
Deliverability belongs alongside audience, content and timing decisions during campaign planning. Regular monitoring gives marketers a way to spot changes in delivery or engagement and address them before they affect a larger portion of the program.
✅ Checklist: Authenticate the sending domain, review technical setup before launch and monitor delivery, bounce and complaint trends after each send.
Build Permission and Compliance Into the Program From the Start
Similar to the point above, trust is built before the first send takes place. When an organization collects contact information, defines audiences and builds campaigns, it needs clear rules for permission, records, unsubscribe requests, communication preferences and the use of customer data for marketing.
For U.S. commercial email, the CAN-SPAM Act establishes requirements for how organizations send and manage marketing messages. Commercial emails must:
- Use accurate sender information and subject lines
- Clearly identify the message as an advertisement
- Include a valid physical postal address
- Provide a clear way to opt out
- Honor opt-out requests within 10 business days
CAN-SPAM does not require prior consent for commercial email, although organizations may still choose to use permission-based subscription practices as part of their email programs. One common approach is double opt-in, which adds a confirmation step after someone submits their email address. The contact must confirm the subscription before marketing emails begin. This can help verify that the person controls the address and give the organization a record of the subscription.
Organizations that market to people in the European Union may also need to consider the General Data Protection Regulation (GDPR) and applicable electronic-communications rules. GDPR governs the processing of personal data, while the EU’s electronic-communications framework addresses direct marketing by email and other electronic messages.
Marketers should also track what contacts agreed to receive and how they can withdraw that permission. Email and SMS may require separate consent, depending on the applicable requirements. For regulated organizations, marketing, privacy and compliance teams should establish these requirements before campaigns and automated programs go live.
✅ Checklist: Document consent, preferences, suppression rules and ownership before launching a campaign. Treat this guidance as a starting point and involve legal or compliance teams for organization- and jurisdiction-specific requirements.
Coordinate Email With SMS and Other Channels
Recipients don’t experience channels as separate departments. They experience one relationship with an organization, whether the interaction happens through email, SMS, a website, social media or a Sales representative. And coordinating those touchpoints across an omnichannel approach helps each message support the broader customer relationship.
Each channel has different strengths. Email can provide detailed information, education or follow-up, while SMS may be better suited to short, time-sensitive communications. A website visit, form submission or response to a message can also provide a signal that informs what communication should come next.
Define each channel’s role in the communication plan. A customer who has completed an action may need to leave an email sequence. Someone who has not responded may receive a different follow-up. Teams should also account for communication preferences, channel-specific consent, frequency and exclusions so recipients do not receive overlapping messages from separate programs.
The same customer data and behavioral signals can inform activity across channels. An email interaction might change a contact’s segment, while a website action could influence the content of a later email or determine whether an SMS reminder is appropriate.
✅ Checklist: Define each channel’s role, coordinate audience rules and use cross-channel signals to outline next steps.
Test the Elements That Can Change Performance
A campaign’s results can show you what worked, but A/B testing takes that insight a step further. It’s one of the most common ways to identify what resonates with your audience by sending two versions of an email to comparable audiences, with one (or very few) meaningful variables changed between them.
Common elements to test include:
- Subject lines
- Calls to action
- Message variations
- Content length
- Layout and design
- Images
- Send timing
- Audience variations
Start with a specific question and a baseline. Test one or two elements at a time so the results are easier to interpret, then apply the findings to subsequent campaigns.
Testing doesn’t have to mean creating an entirely new campaign. When members of Centra Credit Union received an initial email and opted not to engage, they were sent the same email again with a different subject line. That change contributed to the generation of a 35% open rate and produced $10.5 million in new deposits over seven weeks.
This example also shows why testing can be part of a larger program rather than a one-time exercise. Teams can reuse a campaign for future member groups while adjusting the messaging based on what they learn.
✅ Checklist: Define the test question, isolate one meaningful variable, establish a baseline and record what the team will do with the result.
Measure Performance Against the Intended Outcome
Open rates and clicks can make performance appear strong at first glance, but it doesn’t always mean the business outcome is holding true. A high click-through rate may indicate that a message attracted attention, but the more important question is what happened after the click. Ask:
- Did the prospect request information?
- Did the customer complete setup?
- Did the campaign contribute to a renewal or purchase?
If it didn’t result in an action, how valuable was the email in reality? Start by identifying the outcome the campaign is designed to influence, then choose the metrics that show progress toward that outcome.
Email Objectives and Metrics to Consider
|
Email Objective |
Metrics to Consider |
|
Reach the intended audience |
Delivery rate, bounce rate |
|
Generate engagement |
Click-through rate, click-to-open rate |
|
Drive an action |
Conversion rate, form submissions, registrations |
|
Support sales |
Qualified engagement, sales conversations, pipeline |
|
Support onboarding |
Completion rate, product or feature adoption |
|
Support retention |
Renewal rate, repeat purchases, churn |
|
Evaluate audience health |
Unsubscribe rate, spam complaint rate, engagement trends |
Metrics also need to be viewed in context. Compare performance against the campaign’s previous results, the performance of similar audience segments and the objective established before the send. A click rate that looks strong in isolation may look very different when the resulting conversion rate is low.
The same analysis can help teams decide what to change next. A delivery problem points toward list or sending practices, while weak engagement may prompt a review of the audience, message or offer. Strong engagement with weak conversion can indicate that the email and its destination need closer alignment.
✅ Checklist: Choose metrics that connect to the intended outcome, review downstream behavior and use the findings to determine the next optimization.
How Act-On Supports Email Marketing Best Practices
A checklist is easier to put into practice when the systems behind it can support the work. At Act-On, we bring together the capabilities marketers need to build, automate, deliver and measure email programs. Journey orchestration, customer data and cross-channel tools help teams keep communication connected as customer relationships change.
- Advanced Segmentation and Dynamic Content: Build audiences using contact characteristics and behavior, then tailor email content for different segments with dynamic content.
- Journey Orchestration: Use segmentation, scoring, dynamic content and trigger rules to automate programs based on customer behavior and lifecycle context.
- Deliverability: Use list validation and cleansing, monitoring and guidance to support inbox placement and sender reputation. Higher-volume senders can also access dedicated IP services and enhanced support.
- True Open: Distinguish genuine human email engagement from bot-generated opens and clicks, giving marketers a clearer view of actual engagement.
- Adaptive Send: Use previous engagement patterns to determine when individual contacts are most likely to engage.
- Omnichannel Capabilities and Reporting: Coordinate email with web, SMS and social media when those channels support the program, then review campaign performance, engagement trends and lifecycle activity.
Frequently Asked Questions About Email Marketing
How do you create an effective email marketing strategy?
An effective email marketing strategy starts with business objectives and defined audiences. Marketing teams can then establish the lifecycle stages, programs, content, cadence, channels, compliance requirements and performance measures that support those objectives.
The strategy should also account for what happens after each email. Engagement, conversion and other customer signals can inform subsequent communication and determine when a recipient should enter, leave or change programs.
How do you set up automated email campaigns step by step?
A basic process includes:
- Define the business objective.
- Identify the audience.
- Establish the trigger.
- Determine the sequence and timing.
- Create and personalize the content.
- Set conditions, exclusions and exit criteria.
- Test the campaign.
- Launch the workflow.
- Monitor performance.
- Refine the program based on results.
Automated email programs are particularly effective for repeatable situations such as initial nurture, onboarding, event follow-up, renewal reminders and re-engagement. At Act-On, we use customer signals, timing and conditions to coordinate what happens next across automated programs.
What are email marketing best practices for B2B companies in financial services?
B2B financial services organizations should prioritize relevant segmentation, consistent deliverability practices, appropriate consent management and communication that reflects the length and complexity of the customer relationship.
Prospects may need sustained nurture during an extended evaluation, while customers may receive onboarding, education, renewal or re-engagement communication. Marketing teams should also establish processes that align with their organization’s compliance requirements.
How do you use email marketing for sales?
Email can support sales teams by educating prospects, nurturing interest, following up after high-value actions and identifying changes in engagement.
For a complex B2B purchase, an email program may support a prospect throughout an extended evaluation period, with content changing as the prospect moves from early research toward a purchase decision. Engagement signals can also help teams determine when a prospect may be ready for direct follow-up.
Put Email Marketing Best Practices Into Action With Act-On
The best email programs make sure each email earns its place in the customer relationship. That means choosing the right audience, tailoring the message, protecting deliverability and using engagement data to improve experiences with every new send.
At Act-On, we pair email expertise with the flexibility to support those day-to-day demands, giving marketing teams a practical way to manage targeted, high-performing email programs.
Request a demo today to see how the Act-On platform can help you execute an email marketing strategy with ease and confidence.
