Email Marketing Checklist: Top 10 Pre-Send Checks

Before you hit send on your next campaign, run these 10 checks: confirm your goal and KPIs, verify your audience segment and suppression lists, review your subject line and preheader, authenticate your sending domain (SPF, DKIM, DMARC), scrub your list for hard bounces and spam traps, run a render test across Gmail, Outlook, and Apple Mail, click every tracked link and validate UTM parameters, confirm your unsubscribe link and physical address in the footer, check your sender reputation and blacklist status, and have your first-hour monitoring plan ready before the send fires.

That sequence covers the failure modes that cause the most damage: authentication gaps, broken links, missing legal footers, and list quality problems that can take months to repair. A spam-trap hit, for instance, can take 6–12 months to recover from once it damages your sender score.

Pre-send checklist at a glance:

• Campaign goal and primary KPI confirmed
• Audience segment and suppression lists verified
• Subject line and preheader reviewed and tested
• SPF, DKIM, and DMARC authentication confirmed
• List scrubbed: hard bounces removed, spam traps suppressed
• Render test completed across major clients and devices
• Every link clicked, UTMs validated, redirects confirmed
• Unsubscribe link functional, physical address in footer
• Sender reputation and blacklist status checked
• First-hour monitoring plan documented and assigned

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Key Takeaways

A structured, phased email marketing checklist is the difference between campaigns that consistently reach the inbox and convert, and campaigns that leak revenue through broken links, authentication failures, and list quality problems.

Point	Details
Authentication comes first	Confirm SPF, DKIM, and DMARC before debugging content or segmentation issues.
Complaint rate threshold	Keep spam complaints below 0.10% per send to avoid automatic spam-folder placement with Google and Yahoo.
List hygiene prevents long-term damage	A spam-trap hit can take 6–12 months to recover from; suppress inactives on a 90–180 day window.
Test send at least 24 hours early	Schedule your seed-list and render tests at least 24 hours before the live send to allow time for fixes.
Reddog’s workflow	A phased pre-send process drove a 494% increase in orders for a CPG brand by fixing authentication, segmentation, and UTM attribution.

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Table of Contents

• What does a printable email campaign checklist look like?
• Phase 1: How do you set campaign goals and KPIs before writing a single word?
• Phase 2: What content checks catch the most costly pre-send mistakes?
• Phase 3: What do recipients see first, and how do you verify it?
• Phase 4: How do you confirm your email design works on every device?
• Phase 5: Are your SPF, DKIM, and DMARC records actually protecting your deliverability?
• Phase 6: How do you keep your list clean enough to protect your sender reputation?
• Phase 7: What does a repeatable QA routine look like before a live send?
• Phase 8: How should you time and throttle a campaign send?
• Phase 9: What metrics should you monitor in the first hour after sending?
• Phase 10: What are the CAN-SPAM rules every U.S. commercial sender must follow?
• How Reddog’s email workflow drove measurable results for a CPG brand
• How we prioritize the checklist for high-risk vs. low-risk sends
• Reddog’s free 30-minute strategy call for CPG founders
• Sources

What does a printable email campaign checklist look like?

The table below gives your team a single-page reference. Assign an owner to each item, run the check, and mark it pass or fail before the campaign goes live. Print it, paste it into your project ticket, or drop it into your campaign brief.

Pro Tip: TryChaser’s 15-step campaign manager checklist recommends scheduling your test send at least 24 hours before the live campaign so your team has time to fix issues without rushing.

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Phase 1: How do you set campaign goals and KPIs before writing a single word?

Every email that underperforms traces back to a vague brief. Before your copywriter types a subject line, lock three things: the campaign goal, the primary KPI, and the tracking plan.

Campaign goal and KPI confirmation:

• Define the goal in one sentence: revenue, retention, re-engagement, or awareness
• Assign one primary KPI (click-through rate, conversion rate, or revenue per send) and one secondary metric
• Confirm the conversion endpoint: the landing page, product page, or checkout step where success is measured
• Estimate the expected audience size after segmentation and suppression

Audience and segment verification:

• Confirm segment logic in your ESP (filters, tags, or list membership criteria)
• Apply suppression lists: unsubscribes, complainants, recent purchasers if excluded, and role addresses
• Cross-check estimated send count against your list health data

Tracking plan:

• Build UTM parameters using a consistent naming convention (source, medium, campaign, content)
• Confirm the destination URL resolves correctly and that any promo codes are active
• Document how results will be attributed, especially for multi-touch campaigns

Pro Tip: Assign a named owner and a pre-send deadline to each checklist item inside your campaign ticket. A structured campaign workflow with clear ownership prevents the “I thought you checked that” problem that causes last-minute scrambles.

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Phase 2: What content checks catch the most costly pre-send mistakes?

Subject lines and body copy are where most teams rush. These checks slow you down just enough to catch the errors that damage trust and deliverability.

Subject line and preheader

• Keep subject lines under 50 characters for mobile; test longer variants if your audience data supports them
• Avoid spam-trigger words: “FREE,” “guaranteed,” “act now,” “winner,” excessive punctuation, and all-caps strings
• Confirm the subject line accurately reflects the email body content (misleading subjects violate CAN-SPAM)
• Write a preheader that complements the subject without repeating it word for word
• Check that no tracking markup or code bleeds into the preheader display

Body copy and CTA

1. Confirm the email carries one core message with a single primary CTA
2. Apply UTM parameters to every tracked link, using your campaign’s naming convention
3. Verify that every CTA button links to the correct destination and that the landing page is live
4. Check that promo codes, discount amounts, and expiration dates in the copy match what the destination page shows
5. Confirm the reply-to address routes to a monitored inbox, not a no-reply dead end

Personalization tokens and dynamic content

• List every token used (first name, company, product recommendation) and validate each one with sample data
• Set fallback values for every token: if a subscriber’s first name is missing, the fallback should read “there” or a neutral alternative, not a raw {{first_name}} string
• Send a test to at least three sample profiles that represent different data states (complete data, partial data, missing field)

For teams using marketing automation, a step-by-step automation checklist can help you map token logic and fallback handling before the campaign fires.

Legal footer

• Unsubscribe link present and functional
• Physical postal address included (required under CAN-SPAM)
• Sender name and from-address accurately identify your organization

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Phase 3: What do recipients see first, and how do you verify it?

The inbox view is your first impression. A mismatched sender name, a truncated subject, or a broken preheader can tank your open rate before the recipient reads a single word.

Sender name and reply-to verification:

• Confirm the from-name is recognizable: your brand name, not a generic system address
• Verify the reply-to address is monitored and routes correctly
• Check that the from-domain matches your authenticated sending domain

Subject and preheader length checks:

1. Test subject line display at 40 characters (iPhone Mail, narrow screens) and 60 characters (Gmail desktop)
2. Confirm the preheader fills the available preview space without being cut off mid-sentence
3. Check Gmail Promotions tab behavior: does the subject and preheader combination communicate value clearly in that context?

Seed inbox tests across major clients:

• Desktop Gmail (standard inbox and Promotions tab)
• Gmail on Android and iOS
• Apple Mail on iPhone and Mac
• Outlook desktop (2019 and 365)
• Outlook on iOS and Android
• Yahoo Mail (desktop and mobile)

Tools like Litmus and Email on Acid render previews across these clients without requiring manual seed accounts for every test. Run this check at least 24 hours before your scheduled send so rendering issues can be fixed without deadline pressure.

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Phase 4: How do you confirm your email design works on every device?

A campaign that looks polished on your desktop and breaks on a 375px iPhone screen loses the majority of its audience before they reach your CTA. Responsive design and accessibility checks are non-negotiable for any send reaching more than a few hundred recipients.

Responsive layout:

• Test on narrow viewports (375px) and standard desktop widths (600px email width)
• Confirm the primary CTA button is visible without scrolling on mobile where possible
• Check that multi-column layouts stack correctly on small screens
• Verify font sizes: body text should be at least 14px on mobile, CTA labels at least 16px

Images and alt text:

• Every informative image carries meaningful alt text that conveys the same information the image does
• Decorative images use empty alt attributes (alt="") so screen readers skip them
• Confirm all images load over HTTPS; mixed-content warnings can suppress image display in some clients

Contrast and accessibility:

• Text-to-background contrast ratio should meet WCAG AA (4.5:1 for normal text, 3:1 for large text)
• Avoid conveying information through color alone; pair color cues with text labels
• Link text should describe the destination, not just say “click here”

Plain-text version:

• A usable plain-text alternative must exist and match the intent of the HTML version
• Check that the plain-text version includes the unsubscribe link and physical address

Pro Tip: Send your test email to a real device, not just a rendering tool. Rendering tools catch layout issues, but a real device shows you load speed, image rendering in low-bandwidth conditions, and how the CTA feels to tap.

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Phase 5: Are your SPF, DKIM, and DMARC records actually protecting your deliverability?

Authentication is the single highest-leverage technical check on this list. Authentication problems cause a disproportionate share of inbox-placement failures for bulk senders, and they are entirely preventable with a one-time setup and periodic verification.

Authentication checks:

• SPF record includes every service authorized to send on your domain’s behalf (your ESP, transactional mail provider, and any third-party tools)
• DKIM is signing every outbound mail stream; check the selector and key length (2048-bit preferred)
• DMARC record is published at your root domain; start with p=none and an rua reporting address so you can monitor alignment before enforcing policy
• From-domain alignment: the domain in your From header matches the domain covered by your SPF and DKIM records

One-click unsubscribe header:

Google and Yahoo’s bulk-sender requirements, formalized in 2024, require a List-Unsubscribe header with one-click functionality for bulk senders. Confirm this header is present in your email’s raw source and that it processes removals within two days.

Sender reputation monitoring:

• Check Google Postmaster Tools for domain and IP reputation signals before major sends
• Review Yahoo Sender Hub for complaint and engagement data
• Run your sending IP and domain through common blocklist checkers (MXToolbox covers the major ones)

Threshold to watch: Google’s spam complaint rate threshold for bulk senders is 0.10% (one complaint per 1,000 messages). Sustained rates above 0.30% risk automatic spam-folder placement or blocking. Monitor complaint rates in real time during and after every major send.

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Phase 6: How do you keep your list clean enough to protect your sender reputation?

List quality is where many teams underinvest until a spam-trap hit forces the issue. Recovering from that kind of reputation damage can take 6–12 months, which makes prevention the only practical strategy.

Core list hygiene rules:

• Remove hard bounces immediately after they occur; never retry a hard-bounced address
• Suppress repeated soft bounces after three to five attempts, depending on your ESP’s guidance
• Never send to purchased, rented, or scraped lists; consent evidence must be documentable
• Maintain a permanent suppression list for unsubscribes, complainants, and known role addresses (info@, support@, admin@)

Segmentation and re-engagement:

1. Segment your active list by engagement window: subscribers who opened or clicked in the last 90 days are your safest segment for high-volume sends
2. Move 91–180 day inactives into a re-engagement sequence before including them in broadcast campaigns
3. Apply a sunset policy for subscribers who have not engaged in 180+ days: suppress them or run a final re-permission campaign before removing them
4. For list growth, proven subscriber-acquisition strategies that prioritize double opt-in produce cleaner lists from the start

Process flow:

Capture → Verify (double opt-in or email validation) → Segment by engagement → Apply suppression → Seed-test before send

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Phase 7: What does a repeatable QA routine look like before a live send?

A QA routine is only useful if it is repeatable and assigned. Ad hoc testing catches some errors; a documented process catches most of them.

Render and inbox placement tests:

• Send to seed accounts across Gmail, Outlook, Apple Mail, and Yahoo at least 24 hours before the live send
• Inspect inbox placement: did the test land in the primary inbox, Promotions tab, or spam folder?
• Check image rendering, font display, and CTA button appearance in each client

Link and tracking validation:

1. Click every link in the test email, including the unsubscribe link and any image-linked CTAs
2. Confirm UTM parameters are intact after any redirects
3. Verify that destination pages load correctly and that any promo codes are active
4. Check that tracked links use HTTPS and that the redirect chain is not broken

Token and dynamic content validation:

• Send test emails to sample profiles covering: complete data, missing first name, missing personalization field
• Confirm fallback values display correctly in every case
• For conditional content blocks (e.g., product recommendations that vary by purchase history), test each content branch

Image hosting and attachments:

• Confirm all images are hosted on trusted domains over TLS (HTTPS)
• Avoid attaching files to marketing emails; link to hosted assets instead, as attachments increase spam scores

Pre-send QA that includes seed list testing, link verification, and token checks catches the majority of execution failures before they reach your subscribers.

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Phase 8: How should you time and throttle a campaign send?

Execution timing affects both engagement and deliverability. Sending a large volume spike after a period of inactivity is one of the fastest ways to trigger spam filters and damage a domain’s reputation.

Timing and timezone management:

• Choose send windows based on your audience’s historical engagement data, not industry averages
• Apply timezone logic so subscribers in different regions receive the email at the intended local time
• Avoid sending on days when your team cannot monitor the campaign (late Friday sends with no weekend coverage, for example)

Throttling and IP warm-up:

• Warm new IPs and domains by starting with your most engaged subscribers and ramping volume gradually over two to four weeks
• Increase daily send volume by no more than double each day during a warm-up period
• For CPG brands managing multiple channels, coordinate email send timing with promotional calendars on Amazon and Walmart to avoid conflicting demand signals

Pause plan:

• Define the thresholds that trigger a send pause before the campaign goes live: a complaint rate spike above 0.10%, a hard bounce rate above 2%, or delivery error rates above 5%
• Assign one person the authority to pause the send and document the escalation path

Pro Tip: Document your ramp schedule in the campaign ticket before the first send fires. A written plan makes it easy to pause, resume, or adjust volume without losing track of where you are in the warm-up sequence.

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Phase 9: What metrics should you monitor in the first hour after sending?

The first hour after a send is your early-warning window. Problems that surface here, caught quickly, can be contained. Problems that go unmonitored for 24 hours compound.

Immediate monitoring (first 60 minutes):

• Hard bounce rate: flag anything above 2% immediately and pause if it climbs further
• Spam complaint rate: watch for spikes above 0.10% in Google Postmaster Tools and your ESP dashboard
• Delivery errors: SMTP rejection codes above 5xx indicate authentication or blocklist problems

Engagement metrics to track:

• Open rate (directional signal; iOS privacy changes affect accuracy)
• Click-through rate and click-to-open rate (more reliable engagement signals)
• Unsubscribe rate: a spike above 0.5% on a single send warrants a content and targeting review
• Conversion rate and revenue per send, measured against the campaign KPI set in Phase 1

Monitoring cadence: Check metrics at 1 hour, 24 hours, 48 hours, and again at 7 days. For campaigns with longer purchase cycles (subscription products, high-consideration CPG items), extend the attribution window to 30 days and retain raw SMTP event logs for diagnosis.

Retain raw event logs from your ESP for at least 30 days. When a deliverability issue surfaces, those logs are the fastest path to diagnosis.

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Phase 10: What are the CAN-SPAM rules every U.S. commercial sender must follow?

CAN-SPAM does not prohibit unsolicited commercial email, but it sets specific requirements that apply to every commercial message sent to U.S. recipients. The FTC’s CAN-SPAM compliance guide is the authoritative reference; the summary below covers the essentials.

Core requirements:

• Accurate header information: the From, To, and routing information must identify the actual sender
• Honest subject lines: the subject must not mislead the recipient about the email’s content
• Clear ad identification: commercial messages must be identified as advertising (though the law allows flexibility in how this is done)
• Valid physical postal address: a current street address, P.O. Box, or private mailbox registered with a commercial mail-receiving agency
• Working opt-out mechanism: every message must include a clear way to opt out of future messages

Transactional vs. commercial messages:

Under CAN-SPAM, the “primary purpose” of a message determines which rules apply. A transactional message (order confirmation, shipping update, account notification) is exempt from some requirements, but if the primary purpose is promotional, the full commercial-email rules apply. Mixing promotional content into a transactional message can shift its classification, so keep them separate where possible.

Opt-out processing:

• Honor opt-out requests within 10 business days
• Do not require the subscriber to pay a fee, provide additional information, or take more than one step to unsubscribe
• You may not sell or transfer the opted-out address to another list after the request is processed

Vendor oversight:

If you hire a third party to send email on your behalf, you share legal responsibility for CAN-SPAM compliance. Vet your ESP and any co-marketing partners against these requirements. For broader context on compliance in ecommerce operations, the same principle of shared vendor accountability applies across channels.

For GDPR (EU recipients) and CASL (Canadian recipients), consent requirements are stricter than CAN-SPAM. If your list includes subscribers in those regions, confirm your consent documentation and opt-in records before sending.

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How Reddog’s email workflow drove measurable results for a CPG brand

Reddog worked with a growth-stage CPG brand selling across Amazon, DTC, and regional wholesale. The brand had a functional email list but no documented pre-send process, inconsistent UTM tagging, and authentication records that had drifted out of alignment after a domain migration.

The workflow Reddog implemented followed the same phased structure outlined in this checklist: authentication audit first, list segmentation by 90-day engagement window, token validation for personalized product recommendations, and a documented pause plan tied to complaint-rate thresholds.

The result: after implementing a structured email marketing workflow, the brand saw a 494% increase in orders attributed to email, driven primarily by improved deliverability, cleaner segmentation, and consistent UTM attribution that finally connected email clicks to actual revenue.

The checklist items that produced the largest gains were authentication (which had been causing silent spam-folder placement), list segmentation (which reduced complaint rates by removing unengaged subscribers), and UTM consistency (which made revenue attribution accurate for the first time). Any CPG brand running email without a documented pre-send process is likely leaving similar gains on the table.

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How we prioritize the checklist for high-risk vs. low-risk sends

Not every send carries the same risk, and treating a 200-person internal newsletter the same as a 200,000-subscriber holiday blast wastes time and misses what matters.

For high-risk sends (large volume, new IP or domain, post-inactivity restart, or a major promotional event), the non-negotiable checks are authentication verification, list hygiene and suppression, and a seed-list inbox-placement test. These three items account for the majority of catastrophic deliverability failures. Run them first, and run them every time.

For lower-risk sends (small engaged list, established domain, consistent cadence), the priority shifts to content QA: token validation, link checks, and a render test on the two or three clients your audience actually uses.

Prioritization guide:

• Priority 1 (every send): Authentication confirmed, unsubscribe link functional, physical address in footer, hard bounces removed
• Priority 2 (every send above 5,000 recipients): Seed-list inbox test, complaint-rate monitoring plan, suppression lists applied
• Priority 3 (high-volume or high-stakes sends): Full render test across six or more clients, IP warm-up plan documented, pause thresholds defined and assigned

The email marketing best practices that separate high-performing programs from average ones are not exotic. They are the same foundational checks, run consistently, every time.

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Reddog’s free 30-minute strategy call for CPG founders

CPG founders and operators running email as part of a broader channel mix often discover that their biggest margin leak is not in the email itself. It is in the attribution gap between email revenue and what actually shows up in contribution margin after Amazon fees, 3PL costs, and promotional spend are accounted for.

Reddog offers a free 30-minute strategy call designed as a practical working session, not a sales pitch. We review your current channel economics, contribution margin by channel, inventory velocity, or growth planning priorities, and give you a clear picture of where the real leverage is. If email is part of that conversation, we bring the same analytical rigor we apply to marketplace economics.

Qualified CPG brands in the $500K–$20M revenue range can book a complimentary strategy session directly on our site. Come with your numbers; we will help you make sense of them.

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Sources

The references below are the authoritative sources behind this checklist. Use them to go deeper on any phase.

Legal and compliance:

• CAN-SPAM Act: A compliance guide for business | FTC
• Email Deliverability Checklist for 2026: Inbox Placement Tactics | OpenMalo Blog
• Email Deliverability Checklist: 30 Pre-Send Checks | InboxEagle
• Email deliverability checklist — WordStream
• Email marketing checklist for campaign managers | Free Template

Deliverability and authentication:

Campaign workflow and QA:

Tool categories to evaluate:

Recommended

• Email Marketing Best Practices That Drive Real Results – Reddog Consulting Group
• 7 Essential Digital Marketing Checklists for Retail Success – Reddog Consulting Group
• 7 Essential Email Marketing Strategies for CPG Brands in 2025 – Reddog Consulting Group
• Email Marketing Workflow Drives 494% More Orders for CPG Brands – Reddog Consulting Group