Free tools to set up, validate, and optimize your email infrastructure. No signup required.
Select your email services and generate a valid SPF record with lookup counting.
Generate RSA key pairs in your browser. Private key never leaves your device.
Configure DMARC policy, reporting, and alignment settings for your domain.
Full scan of SPF, DKIM, DMARC, and MX records with weekly monitoring.
Find mail servers for any domain with provider detection and priority analysis.
Analyze your subject line for spam triggers, readability, and engagement potential.
Compare what you pay vs raw AWS SES costs. See the markup from other providers.
Generate a day-by-day IP warmup schedule based on Transmit's production algorithm.
Transmit handles SPF, DKIM, and DMARC automatically for every domain. Start sending in minutes.