Email technology & infrastructure
We put your email in the inbox. Then we prove it.
Egressif runs your DNS, your mailboxes, and your sending on a network we own. Your resets and receipts arrive in seconds. A blocklisted IP gets handled while you sleep. New domains go live in hours, not weeks. And when anyone asks what happened to a message, you have the receiving server’s own answer on file.
OWN NETWORK & IP SPACE · RESILIENT MULTI-NODE DELIVERY ·
WE NEVER READ YOUR MESSAGE CONTENT
▌ DELIVERY · LIVE VIEW
smtp 250 2.0.0 accepted · gmail-smtp-in.l.google.com
smtp 250 2.6.0 queued · *.mail.protection.outlook.com
tls TLS1.3 · cert verified · MTA-STS honored
auth SPF pass · DKIM pass · DMARC aligned
────────────────────────────
rate shaped per receiver · 0 deferrals (24h)
repu 0 listings · all pools clean
supp 1,284 invalid recipients stopped at gate
▌ all systems delivering
330M+
client emails delivered
15%+
invalid email blocked before sending
600+
clients supported
What you actually get
Not features. Outcomes.
Here is what changes in your week, your quarter, and your support queue when Egressif runs your email.
Sending domains live in hours
Bring a domain and we provision the zone, publish SPF, DKIM, and DMARC, run the provider verifications, and hand it back verified green. The three-day DNS ticket chain is gone, and every brand or client you add lives in its own tenant from day one.
Critical mail that stops failing
Resets, OTPs, receipts, and alerts move to isolated, prioritized streams with their own reputation. The "password reset went to spam" ticket category shrinks toward zero, and your campaigns can no longer hurt your product mail.
Blocklistings without the fire drill
When an IP gets listed, traffic shifts to clean capacity automatically and we file the delisting with the rejection evidence already attached. You read about it in a morning summary instead of discovering it in a revenue chart.
A clean list that stays clean
Hard bounces, complaints, unsubscribes, DNC and DNP entries are suppressed at the gate, automatically and permanently. More than 15% of attempted invalid mail never leaves, which is reputation you keep instead of spend.
An answer for every message
Support gets a per-message record: accepted by which server, when, over what TLS, with the receiver’s verbatim response. "We’ll look into it" becomes a same-hour answer with evidence. Disputes end at the record.
Provider rule changes, absorbed
Gmail, Yahoo, and Microsoft keep tightening sender requirements. Tracking and meeting them is our job now. The next bulk-sender policy update is a changelog entry for you, not a quarter of remediation.
Your stack, kept in the loop
Delivery events stream into your CRM, warehouse, or product via webhooks and API. Dashboards reflect what actually happened, and automated workflows (including AI agents) get real feedback instead of silence.
A team you didn’t have to hire
Deliverability engineers are scarce and expensive, and one person can’t watch the wires all day anyway. Ours already do, across the whole network. You get the function without the recruiting, and your engineers get their sprints back.
How it fits together
One controlled path from your systems to the inbox.
Mail can come from your application, your CRM, your people, or your AI agents. It all enters one governed pipeline: authenticated at the source, classified by destination, shaped to what each receiver tolerates, and watched the whole way.
Sound familiar?
Email problems don't announce themselves. They just cost you.
“Critical email like resets, receipts, and alerts sometimes lands in spam or shows up late. Every incident turns into a support escalation.”
“A sending IP got listed on a DNSBL overnight. Nobody found out until reply rates collapsed three days later.”
“Microsoft 365 started deferring with 451 responses while Gmail stayed green, and your provider gave you no way to treat the two differently.”
“Standing up a new sending domain takes days of cross-team tickets. DNS zone, SPF, DKIM selectors, DMARC policy, MX, mailboxes. Every single time.”
“When a message fails, the answer lives in five places: the ESP dashboard, the MTA log, the DNS host, a spreadsheet, and someone’s memory.”
“You don’t have a deliverability engineer on staff. Or you have one, and they spend their week firefighting instead of engineering.”
Email is the most taken-for-granted system in the modern company. A black box that simply works, until the day it doesn’t. And some of that damage is the kind you don’t undo: burned domains don’t come back quickly, and reputations rebuild in months, not days. The cheapest deliverability problem you will ever fix is the one you fix before it exists.
The integrated stack
Most providers give you one piece. We run the whole thing.
DNS hosts, mailbox providers, sending tools, and deliverability consultants are usually four vendors pointing fingers at each other. Egressif is all four, accountable as one. And because the layers were designed together, each one makes the others stronger: signing always matches DNS, sending always respects suppression, and monitoring sees everything.
01
Managed DNS →
Authoritative DNS hosting with the full authentication chain handled: SPF, DKIM, DMARC, MX, PTR alignment. Generated, published, verified, and watched. Most deliverability failures are born in DNS, so we treat it as a live system rather than a setup step.
02
Business Mailboxes →
Real, standards-based mailboxes (IMAP / SMTP / JMAP) hosted on our infrastructure. Server-side filtering, forwarding that keeps reply paths intact, aliases, bulk provisioning. We operate them. We never read them.
03
Email Delivery →
Reputation-engineered outbound. Per-destination route engineering, receiver-aware rate shaping, automated IP warming, suppression enforced at the gate, and failover that reacts to what the receiving server actually said.
04
Control, API & Team →
A console and REST API over the whole estate: domains, mailboxes, routing preferences, RBAC, audit logs, delivery events. Behind it sits a deliverability team that monitors and intervenes on your behalf, around the clock.
Core capabilities
The disciplines underneath reliable delivery.
Inbox placement is not one feature. It is a set of engineering disciplines applied on every message, all the time. These are ours.
Route engineering
Outbound mail is not one pipe. Traffic gets classified by destination (Gmail, Microsoft 365, consumer webmail, business security gateways, everything else) and each class can take a different engineered path, with ordered fallbacks when a path degrades. Routing is set per sending domain, so you can run two strategies side by side and let the delivery data pick the winner.
Email reputation monitoring
IP and domain reputation are tracked from the signals that matter: bounce classes, complaint indicators, deferral patterns, provider postmaster data, and the verbatim SMTP responses receivers send back. Degradation gets detected from the wire, not from a quarterly placement report.
Blocklist monitoring & response
Sending IPs and domains are watched against the DNSBLs and URI blocklists receivers actually consult. A listing triggers two things at once: traffic moves to clean capacity so delivery continues, and our team opens the delisting work with the complete rejection evidence already in hand.
Layered suppression
Suppression runs at several independent layers: individual recipient, recipient domain, and per-account do-not-contact (DNC) and do-not-prospect (DNP) lists. Bounce classification feeds it automatically. A 550 5.1.1 unknown-user gets suppressed long-term; a 452 mailbox-full does not. Abuse reports are honored at the same gate, and disposable or long-dead addresses never get attempted at all. Bad traffic stops before it spends your reputation.
No silent loss
A message handed to us is never quietly dropped. It gets retried on the right schedule, rerouted across alternative paths, and failed over until it is delivered, or it comes back to you as an explicit bounce with the receiver’s verbatim response attached. If one of your providers or paths goes down, mail keeps moving through the next. For transactional mail especially: we do everything that can be done to deliver it in time, and you always learn the outcome.
Automated IP warming
New sending capacity earns volume on a measured ramp. Daily ceilings rise only after the current allowance is used cleanly, hold through minimum healthy periods, and step back on bounce or complaint spikes. No spreadsheets, no guesswork, no torched IPs.
Failure semantics, respected
A 421 throttle, a 451 greylist, a 550 5.7.1 policy block, and a connection timeout are four different problems with four different correct responses. Our delivery layer reads the SMTP status code, the enhanced status code, and the response text. Then it retries, reroutes, backs off, or bounces. Whichever is actually right.
Delivery observability
Every accept, deferral, bounce, and delivery is captured with full context: destination MX, TLS state, timestamp, verbatim server response. Queryable per message, streamable into your systems via webhooks. "What happened to this email?" becomes a lookup instead of an investigation.
Infrastructure for AI agents
Agents that send mail need what humans need: authenticated identities, rate discipline, suppression, a feedback signal. Just at machine speed. Our API provisions identities and mailboxes programmatically, our gates contain a misbehaving agent before it hurts a domain, and delivery events close the loop for the agent itself.
The decision layer
Software that decides, before a human has to.
Between 'send' and 'inbox' sit thousands of small decisions. Which path. Which identity. Retry here or reroute there. Slow down or push on. Suppress or deliver. Most sending stacks make these decisions statically, in a config somebody set years ago. Ours makes them continuously.
Informed by the wire
Decisions run on what receiving servers are saying right now: status codes, enhanced codes, response text, deferral patterns. Not on yesterday’s configuration or a quarterly review.
Acting at machine speed
A listing gets contained, a throttle gets respected, a dead address gets suppressed, a degraded path gets bypassed. In the moment it happens, across every tenant and stream at once.
Bounded by policy
The automation operates inside rules you set and we supervise: per-domain routing preferences, rate budgets, suppression scopes. Disciplined, not improvisational.
Supervised by people
Our deliverability team supervises the system, not the individual messages. They review its calls, tune its thresholds, and step in for the judgment calls software shouldn’t make alone.
Call it real intelligence, for intelligent people. A system that reads what receivers actually say, run by humans who spent careers learning what it means. No oracle. No black-box theater. Decisions you can inspect, made for reasons we can show you.
On top of what you know
Keep the tools you trust. Add the layer they're missing.
SendGrid, Amazon SES, Mailgun, Postmark, Google and Microsoft relays. Good pipes. Some of our clients keep using them inside our routing. What none of them gives you is the operating layer above the pipe: the part that watches, decides, recovers, and answers for the outcome.
A single ESP account
One pipe, one shared reputation, one point of failure. When it throttles or lists, your options are wait or migrate in a panic. No per-destination strategy, no failover, nobody watching.
With Egressif, providers become interchangeable paths inside an engineered routing layer. Monitored, warmed, suppressed, and failed over automatically.
Self-hosted mail servers
Acquiring IP space, earning PTR trust, hand-rolling warmup, decoding bounce dialects, answering blocklist pages at 3 a.m. A full-time operations job disguised as a server.
We already did all of it. Own ASN, own IP space, multi-node delivery, and a team whose actual job is the 3 a.m. page.
Sending blind
Most stacks throw away what receivers say. Placement drops and the diagnosis starts from zero. No rejection texts, no deferral trends, no per-message history.
We keep the whole conversation. Every response, every retry, every route decision, queryable per message and streamed to you via webhooks.
Infrastructure
Infrastructure we own, reliability you can count on.
Our own network and IP space
We run our own ASN and control our own IP ranges. Your sending reputation lives on infrastructure we govern directly, not on a rented corner of somebody else’s network.
A resilient, multi-node cluster
Mail flows through a multi-node cluster of mail servers built for high availability. A node can fail. Delivery keeps going.
End-to-end ownership
We own and operate the full stack from the network up. Fewer seams, faster fixes, and one team that answers for the outcome.
API access to everything
Manage domains, mailboxes, and sending programmatically, and consume delivery events the same way. Egressif fits into your systems instead of forcing you into ours.
Security taken seriously
We build on SOC 2-aligned providers, encrypt data in transit and at rest where applicable, and enforce least-privilege access with MFA. We never access your message content.
Deliverability best practices
We follow the RFCs and provider postmaster guidance closely, and implement ahead of enforcement: SPF, DKIM, DMARC alignment, TLS, reverse DNS, and whatever the providers demand next, already in place before they demand it.
Managed deliverability
An extension of your team. Your eyes on deliverability, and the guardrail on your worst sending day.
You don't have to become an email infrastructure expert. We become yours. We watch sender reputation, blocklists, bounce patterns, and provider behavior every day, step in before small problems become outages, and tell you in plain language what happened and what we did about it. And when a campaign, a compromised mailbox, or a runaway integration tries to do something that would hurt your domain, we stop it first. Put bluntly: we care about your reputation more than you do. It is literally the job.
Built for email that matters
Built for the email your business can't afford to lose.
Password resets, receipts, alerts, invoices, agent-generated correspondence, important customer updates. Modern companies run on email that has to arrive. In the inbox, not the spam folder.
Transactional & operational →
Password resets, OTPs, receipts, invoices, order updates. The email your product cannot function without, on isolated reputation and high-availability delivery.
AI agents & automation →
Programmatic sending identities, machine-speed guardrails, and event feedback loops for agentic workflows that talk over email.
Customer & relationship →
Onboarding sequences, account notices, renewals. The ongoing correspondence that keeps customers around, without dragging down your critical streams.
Permission-based campaigns →
Newsletters and announcements to people who asked for them, sent inside provider complaint thresholds on reputation that stays protected.
Services
Infrastructure is half the answer. People are the other half.
Managed Deliverability →
We become your deliverability operations team. Continuous reputation and blocklist monitoring, intervention before damage spreads, and plain-language reporting on what happened and why.
Deliverability Consulting →
Authentication and DMARC alignment review, placement diagnosis from real delivery data, sending strategy, and provider-requirement compliance. From engineers who run this every day.
Custom Email Infrastructure →
Dedicated IP architecture, multi-path delivery topologies, domain strategy, integrations. Designed around your volume and risk profile, then operated by us.
Reliable email, owned end to end.
Tell us where you are today: domains, volume, providers, what hurts. We will come back with a concrete way forward.