One problem. A useful next step.

The outgoing-email
field guide.

Start with a symptom, follow your sending route, and understand what the evidence can tell you. Practical field notes for the person who just needs email to work.

Three places to begin

Follow the evidence you have.

01 / Wrong folder

Investigate a spam example

Use the original message, its route and the receiving system’s results.

Start the spam checklist →

02 / Delivery failed

Understand a rejection

Keep the complete error and establish which system issued it.

Follow the bounce guide →

03 / Recruitment workflow

Map the agency’s email

Separate mailbox, CRM and outreach routes before choosing a check.

Open the recruitment field guide →

18 field notes

Troubleshooting01

Why are my business emails going to spam?

An ordered checklist for outgoing business email. Find the sending route, inspect a real message and change one thing at a time.

How to test email deliverability without guessing

DNS checks, spam scores and inbox-placement tests answer different questions. Choose the one that helps your investigation.

Authentication03

SPF, DKIM and DMARC pass. Why is email still in spam?

Authentication establishes identity, not an invitation to the inbox. Understand the result and the next checks.

Troubleshooting04

Microsoft 365 emails going to spam: where to start

Separate a restricted sender, a rejected message and a recipient’s junk folder before changing Microsoft 365 settings.

Troubleshooting05

Delivered doesn’t mean inbox. Opened doesn’t mean read.

Keep delivery events, bounces, recipient complaints, seed placement, opens, clicks and genuine replies separate.

Troubleshooting06

Email bounces and rejections: what to collect first

Keep the complete rejection, identify which system issued it and avoid treating every error code as a spam verdict.

Bullhorn emails going to spam? Check the product and route.

Bullhorn ATS and Bullhorn Automation need product-specific checks. Start with a real message and the current official setup.

JobAdder email domain checks before the next mailshot

Confirm domain verification, account-issued records and activation. Keep JobAdder messages separate from direct mailbox sends.

Vincere email deliverability: start with the connected mailbox

Mailbox-synced email and portal notifications can need different checks. Identify the feature before changing authentication.

Loxo email deliverability: check pacing, tracking and the route

Use the sending-safety and tracking settings as part of an investigation, not a shortcut to sending more.

Which email testing tool do you actually need?

A documented buyer’s guide to message scorers, DNS checks, inbox placement and list validation. No invented test rankings.

GlockApps for recruitment agencies: when is it useful?

Match inbox testing to the agency problem: candidate mailshots, client BD, CRM messages or domain authentication.

How to run a useful GlockApps test from your recruitment CRM

A practical manual-test workflow that keeps your sender, route and comparison clear, with a reusable test record.

How to read an inbox placement report without overclaiming

Turn inbox, spam and missing results into an investigation plan. Includes a recruitment-specific worked example.

A recruitment email deliverability checklist before your next mailshot

A practical release check for candidate mailshots and client BD: recipients, sending route, authentication, testing and ownership.

SourceWhale emails going to spam: a practical investigation

Trace the campaign step, connected mailbox and recipient outcome before changing tracking, DNS or sending pace.

SourceWhale email tracking: what to measure and how to test a change

Separate opens, tracked clicks and replies. Compare tracking, links or signatures without declaring an unproven spam fix.

Candidate email list hygiene before a recruitment mailshot

A practical workflow for stale records, suppressions, duplicates and uncertain validation results before you send.