Overview
Symptom-first diagnosis: why an email did not send, a contact was not enrolled, a campaign is not running, a reply was not detected, and more.
Each page starts from the symptom you observe, lists the likely causes in order of frequency, and gives a diagnostic checklist that identifies the exact one: grounded in Reply's product documentation, with the rule that explains the behavior linked at every step.
Sending
Why did I hit the active contacts limit?
what counts, and when it resets
Why is a campaign not running?
the toggle colors, provider blocks, bounce suspension
Why can't I add an image or attachment to a step?
size, plain-text mode, and per-contact files
Why was the daily limit not reached?
the mailbox cap, ramp-up, the delay, the schedule window
Why does my email not look the way I built it?
plain-text mode, signatures, spacing
Why was an email not sent?
account, limits, schedule, contact state; the Log tab as the error surface
Why LinkedIn steps fail
disconnected accounts, action limits, contacts without a LinkedIn account
Why was a mailbox disconnected?
expired tokens, revoked access, provider suspensions
Why was a variable not replaced in an email?
missing values, and why case matters
Contacts and replies
Why was an automatic reply counted as a reply?
how messages are classified and what each does
Why can't I find a conversation in the inbox?
a thread you know exists is not in the inbox
Why is a contact still active after replying?
reply handling, and replies that were never seen
Why was a contact blocked or opted out?
opt-outs, misclassified replies, and domain-level blocks
Why was a contact duplicated?
the contact identifier, and merging what exists
Why was a contact not enrolled?
import skips, Opted Out, keep-in-sequence options
Why were contacts not imported?
matched records, field formats, contacts without emails
Why was a reply not detected?
the folder rule, address matching, contact status
Why do statistics not match?
denominators, time filters, tracking gaps
Why was a task not created?
which steps create work for a person, and who gets it
Integrations and API
Why is Reply activity not showing in my CRM?
separate, one-way, write-once
Why did a contact not sync to my CRM?
placeholder emails, required fields, field lengths
Why did my CRM sync stop?
connection, disabled steps, and how often sync actually runs
Why was a webhook not received?
retries, the response timeout, automatic switch-off, scope
Team and access
Why can't I sign in to Reply?
which account, which address, and what only support can change
Why can't a team member accept an invitation?
the address is already in use, and the order that works
Why can't a teammate see a sequence or mailbox?
workspace, filters, roles, ownership
Deliverability
Why does my domain fail its DNS check?
one SPF record, the right selector, and propagation
Why are my emails going to spam?
authentication and volume before wording
Automation
Why did a condition send contacts the wrong way?
operators depend on the field type
Why did a trigger not fire?
scope, conditions, and automatic disabling
AI SDR
Why did Autopilot stop adding contacts?
the five reasons sourcing pauses
Why did I get fewer sequence ideas than expected?
a sequence-idea run came back short
Why is the fit score empty?
contacts in an AI SDR sequence show no fit score
Why did my generated playbook disappear?
a drafted playbook vanished before use
Why did a lead source add no contacts?
an AI SDR lead source delivered nobody
Why is my messaging rule not being applied?
a rule written for the AI has no effect
Why did stop and notify not notify me?
a reply handler stopped the contact but no alert arrived
Data and search
Why did enrichment change data I did not want changed?
enrichment replaced data you had
Why did enrichment use credits but find nothing?
credits went and little came back
Why is my export missing data?
an export is empty, short, or lacks the columns you need
Why did the LinkedIn search import fewer people than it found?
a LinkedIn search added fewer people than it found
Why did my search return too few contacts?
a prospect search found far fewer people than expected
Channels
Why was my SMS registration rejected?
the carrier review refused your messaging campaign
Why is warm-up not running?
a mailbox is not warming up
Domains and mailboxes
Why did my domain expire or fail to renew?
the renewal window, charge-before-renew, packages that cannot be renewed
Why are my purchased mailboxes still pending?
provisioning windows, the confirmation that can go missing, workspace conflicts
The assistant
Why is the AI assistant not answering?
the daily allowance, plans that show the entry point without access
Why does a connected tool return nothing in the assistant?
authorization, cached action lists, per-request record caps
Why did nobody answer after the assistant escalated to support?
where the reply comes back
Interface
Why does dark mode keep resetting or not appear?
stored per browser, system preference read once
Why does Reply not fit on my phone screen?
adapted and desktop-only screens, and how this differs from the mobile app
Related
- Behavior – the intended behavior behind each symptom
- How to – configure it before it breaks
- Integrations – connection-specific behaviour and limits
Build with Reply
- REST API: docs.reply.io – the state-inspection endpoints used in these checklists
- MCP: docs.reply.io/mcp/overview – agents run the same diagnostics