Land in the inbox. Every time.
Automatic SPF, DKIM, and DMARC on every domain. Managed IP warm-up. Real-time blocklist monitoring. Sendbound handles deliverability end-to-end — you just send.
SPF, DKIM, and DMARC — handled automatically
Email authentication is the foundation of deliverability. Without it, inbox providers treat your email with suspicion. Sendbound configures all three records automatically when you add a sending domain.
Authorises Sendbound's sending servers on your behalf. Prevents other servers from spoofing your domain.
Auto-published as a DNS TXT record when you add a sending domain. No manual DNS editing required.
Cryptographic signature attached to every email. Proves the message was not altered in transit.
Sendbound generates a 2048-bit RSA key pair per domain. Public key is published automatically.
Policy that tells inbox providers what to do when SPF and DKIM fail. Required by Gmail and Yahoo.
We configure p=quarantine by default and graduate to p=reject once your sending reputation is established.
New IP reputation, built automatically
A new IP address has no reputation with inbox providers. Sending high volumes immediately will get you flagged as a spammer before you've sent a single legitimate email. IP warm-up is a gradual volume ramp over 4–5 weeks that builds trust with Gmail, Outlook, Yahoo, and every other major provider.
Sendbound's automated warm-up scheduler calculates the right daily volume based on your real-time ISP signals — bounce rates, spam complaint rates, and engagement metrics — and adjusts the ramp automatically. No spreadsheets, no manual intervention.
40+ blocklists monitored, around the clock
Getting listed on a DNS blocklist can cause your emails to be rejected silently — no bounce, no error, just a drop in delivery rate that's nearly impossible to diagnose without monitoring.
Sendbound monitors your sending IPs and domains against 40+ Real-time Blackhole Lists (RBLs) continuously. The moment a listing is detected, you receive an instant alert via Slack, email, or webhook — along with step-by-step delisting guidance and one-click delisting requests where supported.
Show your brand logo in every inbox
BIMI (Brand Indicators for Message Identification) displays your logo next to emails in Gmail, Apple Mail, and Yahoo. It signals to both inbox providers and recipients that you're a verified, trustworthy sender.
BIMI requires a DMARC policy of p=quarantine or p=reject. Sendbound sets this up automatically.
We generate and publish your BIMI TXT record at default._bimi.yourdomain.com automatically.
Senders with BIMI enabled see an average 23% increase in open rates from the logo trust signal.
Deliverability is not a checkbox — it's infrastructure
Most providers offer DKIM support. Few manage it for you. None warm up your IPs automatically.
| SendGrid | Postmark | Sendbound | |
|---|---|---|---|
| Automatic DKIM setup | |||
| Automatic SPF | — | — | |
| Automatic DMARC | — | — | |
| Managed IP warm-up | — | — | |
| Blocklist monitoring | — | — | |
| BIMI setup wizard | — | — | |
| Per-domain reputation tracking | |||
| Real-time ISP feedback loops | — |
"Our inbox placement went from 87% to 99.4% in the first week after migrating to Sendbound. I've never seen a metric move that fast."
"DKIM, SPF, DMARC — all handled out of the box. Our deliverability is better now than when we had a dedicated infrastructure engineer."
"The blocklist monitoring alone has saved us twice. We were listed on SpamCop without knowing it. Sendbound caught it in minutes and walked us through delisting."
Start landing in the inbox today
Free plan includes full deliverability infrastructure. No credit card required.