Deliverability isn't a setting. It's the product.
Volume means nothing if mail lands in spam. Every message Drin sends is authenticated, isolated, and watched — and we pause sending before a bad pattern can burn your domain or anyone else's.
What happens to mail before it leaves.
Authenticated, always
SPF, DKIM and DMARC are set up with guided DNS and verified automatically. Every send is signed with your domain's key.
MAIL FROM alignment
A custom return-path on your own domain keeps SPF aligned and hides shared infrastructure from the headers recipients see.
List-Unsubscribe injected
One-click unsubscribe headers (RFC 8058) are added to bulk mail automatically, so you meet Gmail and Yahoo bulk-sender rules.
Senders kept isolated
Your reputation is yours. Tenants and senders are isolated so one noisy neighbour can't drag down your inbox placement.
A circuit breaker for your domain.
Drin continuously measures bounce and complaint rates per sender. When they climb toward the lines that get accounts suspended, we pause sending and tell you — automatically, before the mailbox providers do it for you. Bad addresses are suppressed on the first hard bounce, so you never re-send into a wall.
We'd rather tell you the truth about a domain than ship you a green checkmark that lies.
Plenty of platforms paper over deliverability — a reassuring badge, a hidden bounce, an inbox you assume is working until a launch goes quiet. Drin shows you the real state of every domain: which records are verified, where alignment is off, and what your reputation looks like right now.
When something needs your attention, you hear it from us in plain language. That honesty is the whole point — it's why senders who've been burned by bigger platforms move here.
Send mail that actually arrives.
Verify a domain in minutes and watch it authenticate itself.