Clarity over mystery
WillItInbox turns hidden deliverability signals into plain-language findings, confidence scores, and prioritized fixes.
About WillItInbox
Deliverability intelligence for teams that cannot afford missed email.
WillItInbox helps revenue, product, and infrastructure teams understand whether their email is authenticated, trustworthy, reachable, and ready to send.
Why we exist
Email is mission-critical, but deliverability is still too hard to inspect.
A single authentication mistake, broken header, risky link, stale address, or catch-all domain can quietly move important messages away from the inbox. WillItInbox brings those signals into one workspace so teams can diagnose issues before they become lost revenue, lower activation, or support escalations.
56+
message-level checks
12
validation layers
5
weighted score categories
What WillItInbox replaces
Instead of separate tools for spam scoring, DNS checks, list validation, CSV cleanup, and report sharing, WillItInbox gives your team one account-based workflow.
Deliverability tests for real messages
Email validation for single addresses and CSV lists
Account usage, plan limits, and private reports
API access for repeatable checks and automation
Message and list quality together
Teams can test the email they send and validate the recipients they send to without stitching together multiple vendors.
Built for operational trust
Reports, validation jobs, usage, and downloads are account-scoped, with short raw-email retention and plan-based report windows.
Who it is for
Built for teams that send email as product.
SaaS teams protecting signup, password reset, billing, and lifecycle email
Marketing teams checking campaigns before expensive sends
Agencies auditing client domains, templates, and sender reputation
Developers integrating deliverability checks into release and QA workflows
Ready to inspect your email?
Run a deliverability test or validate a recipient list from the WillItInbox workbench.
Open deliverability tools