Free Tools
Free tools for better email
Test your deliverability, check and generate your DNS records, and verify addresses — all free, no signup. Built on the same engine that powers utobo Email.
Test & Score
Check DNS Records
DNS Record Checker
Look up any DNS record for a domain.
MX Lookup
Find the mail servers for any domain.
SPF Checker
Validate your SPF record and DNS lookups.
DKIM Checker
Confirm your DKIM signature is published.
DMARC Checker
Check your DMARC policy and coverage.
Email Header Analyzer
Paste raw headers to trace a message.
Generate & Build
DKIM Generator
Create a DKIM key pair and DNS record.
SPF Generator
Build a correct SPF record in a click.
DMARC Generator
Generate a DMARC policy record.
BIMI Generator
Show your logo next to your emails.
Signature Builder
Design a clean email signature.
Email Sequence Builder
Plan a multi-step drip sequence.
One platform for all your email
Transactional API, broadcasts, and automations — with SPF, DKIM and DMARC handled for you.