TutorialPractitioner7 min read

Monthly Email Marketing Routine: A 2-Hour B2B Checklist

A monthly email routine for B2B teams: deliverability and compliance checks, list health, flow and newsletter reviews, tests, reporting and next actions.

Dipuck Jones
Written by Founder of MentionX · 13+ years in B2B SaaS growth and SEO
Reviewed
Short answer

A monthly email routine keeps deliverability, compliance and performance from drifting. In about two hours, check sender health (Postmaster Tools compliance status and spam rate, Microsoft SNDS if you send to Outlook, bounces and DNS records), list health (growth, active share, sunset volume, sources), flows (errors, conversion, holdouts), newsletters and campaigns (clicks, replies, unsubscribes), tests, and business results in GA4 and the CRM. Then write three to five actions with owners. Add a weekly 15-minute check for spam rate and bounces, and a quarterly review for authentication, ESP contracts, consent records and the overall program.

Key takeaways
  • Weekly: spam rate, compliance status, bounces, flow errors (15 minutes).
  • Monthly: health, list, flows, newsletters, tests, business results (about 2 hours).
  • Quarterly: DNS and authentication audit, consent and compliance, strategy.
  • Every review ends with three to five owned, dated actions.
  • Keep one scorecard, one test log, one suppression list.

Checked 5 November 2026 (CET) against Gmail Postmaster Tools help, Gmail sender guidelines, Microsoft SNDS and Google Analytics Help cited in Sources. Ledgerline is a fictional company used for illustration.

01What is the cadence?

CadenceTimeFocusOwner
Weekly15 minutesSpam rate, compliance status, bounces, flow errorsEmail owner
MonthlyAbout 2 hoursFull review belowEmail owner, marketing ops, RevOps
QuarterlyHalf a dayAuthentication, compliance, ESP, strategyMarketing lead plus legal or DPO as needed

02What is in the weekly check?

  1. Postmaster Tools: spam rate for each sending domain (under 0.1%, never reaching 0.3%) and compliance status.
  2. ESP: bounce rate per send, any blocks or deferrals by provider.
  3. Flows: errors, paused flows, unusual entry counts.
  4. Replies inbox: unsubscribe requests sent by reply, complaints.

If anything is red, act that week rather than waiting for the monthly review (lesson 6).

03What is in the monthly review?

1. Sender health (20 minutes)

CheckSourcePass
Spam rate trendPostmaster ToolsBelow 0.1% all month
Compliance statusPostmaster Tools v2Compliant for each domain
ReputationPostmaster Tools IP and Domain Reputation dashboardsStable or improving. Spam rate still comes first
Outlook healthMicrosoft SNDS (if you send from your own IPs)No red or yellow days
Hard bounce rateESPBelow about 1 to 2% per send
Unsubscribe processingESP and CRMOne-click works; processed within 48 hours
DMARC reportsDMARC report toolNo unknown sources failing alignment

2. List health (15 minutes)

MetricQuestion
Net list growthAre we adding more than we lose?
Active share (90 days)Is the engaged audience growing?
SourcesWhich forms and lead magnets add active subscribers?
Sunset volumeDid the sunset policy run?
Suppression syncDo ESP, CRM and outbound tools share suppressions?

3. Flows (20 minutes)

FlowMetricQuestion
WelcomeClick rate, first conversionIs the first email doing its job?
OnboardingActivation vs holdoutIs the flow causing activation?
NurtureMQL or demo conversionWhich step drops off?
Re-engagementReactivated shareIs it worth keeping?

Look at one flow in depth each month on a rotation.

4. Newsletters and campaigns (20 minutes)

  • Unique click rate by send and by segment.
  • Replies and forwards.
  • Unsubscribe and complaint rate by send.
  • Top-clicked content and topics; feed into next month's plan.
  • Web archive performance and AI Assistant sessions (lesson 19).

5. Tests (10 minutes)

  • Tests completed, results and decisions in the test log (lesson 14).
  • Next month's tests with hypotheses and sample sizes.

6. Business results (20 minutes)

MetricSource
Email-sourced key eventsGA4 Email channel (lesson 16)
Pipeline influencedCRM
Trial activation liftProduct data with holdouts
Tracking hygieneGA4 medium values; Unassigned sessions from email

7. Actions (15 minutes)

Write a summary with:

  • Three wins.
  • Three issues.
  • Three to five actions with an owner and date.

04What goes in the quarterly review?

AreaChecks
AuthenticationSPF lookups under 10, DKIM keys rotated as planned, DMARC policy progression, BIMI status (lesson 4)
Sender requirementsAny changes at Gmail, Yahoo or Microsoft (lesson 5)
ComplianceConsent records, privacy notice, legitimate interests assessments, country rules for outbound (lessons 3 and 17)
ESPContract, contacts tier, features, deliverability support (lesson 8)
AI and contentAI review process, claims list, AI inbox changes (lesson 18)
StrategyProgram goals, frequency, segments, newsletter positioning

05How do you build the scorecard?

Use one page, built in Looker Studio or a sheet:

SectionMetricsComparison
HealthSpam rate, compliance status, bounce rateLast 3 months
ListNet growth, active shareLast 3 months, last year
EngagementUnique click rate by stream, repliesLast 3 months
BusinessEmail key events, pipeline influencedLast 3 months, last year
TestsCount, winsQuarter to date

Postmaster Tools has an API, so health data can feed the scorecard automatically; the Looker Studio executive reporting lesson covers layout.

06Worked example: Ledgerline

Ledgerline is a fictional accounts-payable software company. Figures are illustrative, not benchmarks.

Ledgerline has completed the track: authentication done, outbound moved off the main domain, flows rebuilt, newsletter archive published. The risk now is drift.

Walkthrough

  1. Weekly check on Monday mornings: Postmaster Tools, bounces, flows; 15 minutes.
  2. Monthly review second Tuesday: lifecycle manager, marketing ops, RevOps.
  3. Scorecard in Looker Studio with Postmaster Tools, ESP exports and GA4.
  4. October review findings (illustrative): spam rate stable below 0.1%; active share up; onboarding flow activation ahead of holdout; one product-update email had a high unsubscribe rate.
  5. Actions: reduce product-update frequency for Tier C; test a new welcome offer; fix two UTM values producing Unassigned sessions; rotate DKIM key next quarter.
  6. Quarterly review in January: DMARC move from quarantine to reject planned.

07Common mistakes

  • Only reviewing when something breaks.
  • No weekly spam-rate check.
  • Reviews without written actions.
  • Different numbers in every report.
  • Never revisiting authentication after setup.

08Try it yourself

Book the weekly check and the monthly review in your calendar. Build the scorecard skeleton with the sections above, even if some cells are empty. Run the first review and write three actions with owners.

09Quick quiz

1. What belongs in the weekly check? Answer: Spam rate, compliance status, bounces and flow errors.

2. What spam rate should you stay below? Answer: 0.1%, and never reach 0.3%.

3. What should every monthly review produce? Answer: A written summary with three to five owned, dated actions.

4. What belongs in the quarterly review? Answer: Authentication, sender requirements, compliance, ESP and strategy.

10What should you check before you finish the track?

  • Weekly and monthly reviews scheduled.
  • Scorecard built.
  • Test log and suppression list shared.
  • First quarterly review date set.

Previous: Newsletters as citable content for AI search

Or return to the Email Marketing for Marketers track.

Related: Postmaster Tools v2 and deliverability monitoring · Email metrics after Apple MPP · Meta Ads monthly review routine

11Common questions

How long should a monthly email review take? About two hours for a small B2B team once the dashboards exist, plus time to act on the findings. The first month takes longer while you build the scorecard.

What should be checked weekly rather than monthly? Gmail Postmaster Tools spam rate and compliance status, bounce spikes, and any flow errors. Problems there can damage reputation within days.

Who should attend the monthly email review? The email or lifecycle owner, someone from marketing ops or the ESP admin, and a sales or RevOps representative for pipeline. Content and product join when their programs are discussed.

What should come out of the review? A short written summary with three to five actions, each with an owner and date, plus updates to the test log and suppression or sunset lists.

Questions people ask

4 answers

How long should a monthly email review take?

About two hours for a small B2B team once the dashboards exist, plus time to act on the findings. The first month takes longer while you build the scorecard.

What should be checked weekly rather than monthly?

Gmail Postmaster Tools spam rate and compliance status, bounce spikes, and any flow errors. Problems there can damage reputation within days.

Who should attend the monthly email review?

The email or lifecycle owner, someone from marketing ops or the ESP admin, and a sales or RevOps representative for pipeline. Content and product join when their programs are discussed.

What should come out of the review?

A short written summary with three to five actions, each with an owner and date, plus updates to the test log and suppression or sunset lists.

Sources

  1. Gmail Help, Postmaster Tools dashboardssupport.google.com
  2. Gmail Help, Email sender guidelinessupport.google.com
  3. Microsoft, Smart Network Data Servicessendersupport.olc.protection.outlook.com
  4. Google Analytics Help, Default channel groupsupport.google.com
  5. All accessed 5 Nov 2026.
Written and reviewed by Dipuck JonesHow we research and testReport an error