A little help before you hit send

Good email starts
with the right tools.

Check your DNS. Understand your policy. Give that HTML a proper preview. Small, useful tools for the things between your code and the inbox.

Free to useNo signupBuilt for developers
01

DNS diagnostics

SPF checker

Look up your SPF record, explore included senders and find common configuration problems.

Check SPF record
02

Domain protection

DMARC checker & generator

Understand your published DMARC policy or generate a monitoring record for your domain.

Check DMARC record
03

Email development

HTML email previewer

Paste your email HTML, preview desktop and mobile widths, and download your source. All in your browser.

Preview email HTML

Built around the work

Useful on their own.
Better with a next step.

DNS tools read public records and explain what they find. The email previewer works locally in your browser. Every tool gives you results without asking you to create an account.

When you are ready to send, SendPanda brings an email API, templates, newsletters and an inbox together. Start with 1,000 emails a month free.