Every message goes out authenticated — SPF, DKIM, DMARC — routed
across tier-1 networks and promoted to the highest-deliverability tier
your sending earns. Don't take our word for it: send yourself a real
one and see where it lands.
Rides onCFCloudflareSESAmazon SES+ more tier-1 networks
Verifying your address creates your free account — that's the whole signup.
We emailed a verify link to
. Click it and you'll
land right back here — or type the 6-digit code below.
Email verified — your free account and API key are live.
Now the real thing: this button runs a POST /v1/send
from your browser to
.
Don't take our word for it
Open the message in Gmail → ⋮ → Show original.
Read the SPF, DKIM, and DMARC results yourself. That's the same check every
inbox provider runs on your production mail.
Authenticated mail rides the string up past SPF, DKIM, and DMARC into
the inbox. Flip the toggle to see what happens to mail that isn't.
SPF
DKIM
DMARC
delivery path
Auto-routed across Cloudflare · Amazon SES + more — AI-tuned per domain, promoted to the highest tier your sending earns.
Best-path routing
The right provider for every message
Transactional, broadcast, or a brand-new domain — MailKite reads each
message and routes it through the provider most likely to land it:
Amazon SES, Cloudflare, or Postmark. Warm pools on day one, and an
automatic reroute if a network degrades. You never pick a provider or
babysit an IP.
provider routingoptimal path per message
MailKite routes each message through the provider most likely to land it — and reroutes automatically if one degrades.
The upgrade queue
Your reputation moves up, automatically
Deliverability isn't a one-time setup — it's earned over time. MailKite
watches how each domain sends and promotes it to the best provider and
tier for its pattern. The longer you send clean mail, the higher you
climb. Cloudflare and Amazon SES do the carrying; the intelligence on
top is what lands your mail.
provider upgrade queuereputation ↑ as you send
Nothing to configure. The longer you send clean mail, the higher MailKite promotes your domain.
Best-path routing
Your mail rides Cloudflare, Amazon SES, and other tier-1 networks. MailKite picks the best path for every message — and reroutes if one degrades, so delivery never rides on a single provider.
Automatic promotion
MailKite learns how each domain sends and moves it to the highest-deliverability tier its sending earns. Placement gets better as you go — nothing to configure, no reputation to babysit.
Continuous AI review
As you send, MailKite samples your mail and reads the delivery signals — authentication, routing, timing — and tunes each domain toward the inbox, flagging risk before it costs you.
Pool hygiene
Spam never rides in your lane
On a shared platform, your inbox placement is only as good as the
company you keep. MailKite keeps abusive senders on a separate,
isolated pool — so the reputation your mail rides stays clean, no
matter who else is on the network.
pool isolationyour lane stays clean
Your domain rides a reputation that abusive senders never share.
The fundamentals
Authentication, handled
The three checks every inbox looks for — configured, signed, and
monitored for you.
SPF
Sender Policy Framework
Authorizes MailKite's servers to send for your domain. Receivers check the sending host against your published record — we keep it aligned.
DKIM
DomainKeys Identified Mail
Every message is cryptographically signed with a key on your domain, so receivers can prove it wasn't altered in transit. We publish and rotate the keys.
DMARC
Domain-based Message Authentication
Ties SPF and DKIM to the From: address recipients actually see, and tells inboxes to trust aligned mail. Configured and monitored for you.
Also handled
Warmed sending domain Reverse DNS (PTR) TLS in transit Bounce & complaint handling Feedback loops List-Unsubscribe headers
Questions
How does MailKite improve email deliverability over time?
MailKite runs a provider upgrade queue. Every domain starts in a warmed shared pool and, as it builds a clean sending history, is automatically promoted to the highest-deliverability tier its pattern earns — across tier-1 networks like Cloudflare and Amazon SES. Your inbox placement climbs on its own; there's nothing to configure and no reputation to hand-manage.
Does MailKite use shared or dedicated IPs?
Neither is something you have to choose or manage. MailKite routes each message across multiple tier-1 networks and picks the best path per send, promoting your domain to higher-reputation tiers as your sending earns it. You get the deliverability of a well-run dedicated setup without warming or babysitting an IP yourself.
Which networks does MailKite send across?
Your mail rides Cloudflare, Amazon SES, and other tier-1 networks. MailKite chooses the best path for every message and reroutes automatically if a provider degrades, so your delivery never depends on a single sender.
Why not just send through Amazon SES or SendGrid directly?
You can — and then you own IP warmup, suppression lists, bounce and complaint handling, feedback loops, SPF/DKIM/DMARC, and reputation monitoring, forever, on a single network. MailKite does that work for you and routes each message across Cloudflare, Amazon SES, and other tier-1 networks, rerouting automatically if one degrades. You get the deliverability of a well-run multi-provider setup without running one.
Is MailKite a good SendGrid or Mailgun alternative for deliverability?
Yes. Where SendGrid and Mailgun hand you a single network and leave IP warmup, authentication, and reputation to you, MailKite configures SPF, DKIM, and DMARC, starts you on warmed pools, routes across multiple tier-1 networks, and promotes your domain automatically — on an unlimited free tier with no credit card. Add your domain, drop in the DNS records, and most teams are sending in under 15 minutes.
Do I need to set up SPF, DKIM, and DMARC myself?
No. MailKite configures and monitors SPF, DKIM, and DMARC for your domain, publishing and rotating the keys and keeping alignment correct. You add a domain; authentication is handled.
How does MailKite keep other senders' spam from hurting my deliverability?
Abusive senders are kept on a separate, isolated pool that never shares your reputation. Your domain rides a clean lane, so a bad actor elsewhere on the platform can't drag your inbox placement down.
Is there anything to warm up or configure?
No. A warmed sending domain, reverse DNS (PTR), TLS in transit, bounce and complaint handling, feedback loops, and List-Unsubscribe headers are all handled for you. You ship features; MailKite keeps you out of the spam folder.
Ship email that lands
Get an API key, add a domain, and start sending on a reputation that
climbs on its own.
Cloudflare SES Amazon SES + more tier-1 networks