Every email.
Every inbox.
Automated DNS authentication, blocklist monitoring, and dedicated IPs. Everything you need to reach the inbox.
Deliverability Score
Inbox Placement
Based on authentication, reputation, and infrastructure health across all sending domains.
DNS authentication
All your email authentication records in one place. Guided setup with real-time verification.
v=DKIM1; k=rsa; p=MIGfMA0G...v=spf1 include:spf.lettr.com ~allv=DMARC1; p=quarantine; rua=mailto:dmarc@lettr.comtracking.lettr.comBlocklist monitoring
Continuous scanning across major blocklists. Get alerted the moment something changes.
DKIM & SPF Setup
Guided setup for email authentication records. Lettr generates and validates your DKIM keys and SPF records automatically.
DMARC Monitoring
Receive and parse DMARC aggregate reports. See who is sending email on your behalf and detect unauthorized senders.
Dedicated IPs
Get your own dedicated sending IP with full reputation control. Warm up automatically and monitor your sender score over time.
Suppression Lists
Automatically suppress bounced addresses, complaints, and unsubscribes. Protect your sender reputation by never hitting bad addresses twice.
Blocklist Monitoring
Continuous monitoring across major blocklists. Get alerted immediately if your sending IPs or domains appear on any blocklist.
Custom SSL Tracking Domains
Use your own branded tracking domain with full SSL support. Links and open tracking look like they come from your domain, not a third party.
3,000 emails/month free. No credit card required.