Solutions / SaaS & Product Email
Protect the email your product depends on.
SaaS companies send everything: onboarding, lifecycle, invoices, alerts, digests, campaigns. Usually from one account with one reputation bucket. When the marketing side has a bad week, the product side pays for it. We separate the streams and protect each one.
The context
Why product email and marketing can't share a reputation.
Every SaaS company eventually re-learns the same lesson: mailbox providers score senders, not message categories. If your lifecycle campaigns, your invoices, and your password resets all leave from the same IPs under the same domain reputation, they share one fate. A complaint spike on a re-engagement campaign raises the spam-foldering odds of your receipts. Not because receivers are unfair. Because, to them, it is all one sender behaving badly.
The structural fix is stream separation: distinct sending identities per traffic class, each warmed, monitored, and rate-shaped on its own. Most teams know this in theory. Few have the infrastructure to do it properly, because it multiplies everything: DNS records, DKIM selectors, warmup schedules, monitoring scopes. That multiplication is exactly what our platform absorbs. Streams become a configuration choice, and the operational overhead becomes ours.
The second SaaS-specific risk is the compromised or runaway sender. A leaked credential, a misconfigured integration, or a bugged cron job can emit tens of thousands of messages before a human notices, and the reputation damage outlasts the incident by months. Containment has to live at the infrastructure layer: per-sender rate gates that hard-stop an outbreak at the door. A dashboard alert that hopes someone is awake does not count.
Your challenges
Where SaaS sending goes wrong.
Marketing volume hurt your domain reputation, and suddenly password resets started landing in spam. Two teams, one shared fate.
A compromised account or a bugged integration once blasted thousands of messages before anyone noticed, and the reputation hangover lasted a quarter.
You’ve outgrown a single provider account, but the migration (new IPs, new warmup, new DNS) keeps getting deferred because nobody owns it.
Engineering owns email by accident. Deliverability gets monitored by "did anyone complain this week?"
Support cannot answer "did the invoice send?" without filing an internal ticket.
How Egressif helps
What changes when the streams are kept apart.
Streams kept structurally apart
Product email, lifecycle email, and campaigns run on separate sending identities with separate reputation: separate DKIM-signed subdomains, separate capacity, separate monitoring. One stream’s incident stays that stream’s problem.
Outbreak containment at the gate
Per-sender hourly caps hard-stop a compromised mailbox or runaway integration at the delivery layer. The incident is contained to its budget. Your domain reputation never finds out.
Warming without project management
New identities and capacity ramp automatically. Daily ceilings grow with cleanly used volume and step back on negative signals. Migrations and scale-ups stop being reputation gambles.
API-first operations
Domains and mailboxes provision programmatically through scoped API keys, routing preferences sit in the console per domain, and delivery outcomes are recorded with the receiver’s verbatim response. Email infrastructure becomes a managed dependency instead of a side quest.
Continuous monitoring with humans attached
Bounce classifications, deferral patterns, blocklist exposure, and authentication health are watched per stream. Systems first, our deliverability team second. Degradation gets caught while it is still invisible in your aggregate stats.
SMTP relay or API, your choice
Connect the way your stack already works: point your framework’s mailer at our SMTP relay, or integrate the API where you want events and control. Switching streams over is an afternoon, not a migration project.
Reputation alerts, not reputation surprises
A listing or a reputation block is detected from the receiver’s own rejection the moment it first happens, fails over automatically, and alerts our team with the evidence attached. You hear about it from a human with the cause and the fix, not from a falling conversion chart two weeks later.
Route engineering with a plan B
Every stream’s path has configured alternatives. A provider outage or a degraded route means mail flows through the next option, automatically. Your uptime stops depending on any single provider’s.
Per-message answers for support
"Did the invoice send?" becomes a one-lookup answer with evidence: accepted by which receiving server, when, over what TLS, with what response code.
Streams, drawn
One product. Three senders, as far as receivers know.
FAQ
What SaaS teams ask first.
How many streams do we actually need?
Most SaaS companies land on two or three: product-critical, lifecycle, and campaigns. More is possible but rarely useful. We will look at your traffic mix and recommend the smallest split that isolates what matters. Adding a stream later is a configuration change, not a project.
Does stream separation mean managing three vendors?
No, that is the point. One platform, one console, one API. The streams are separate identities with separate reputations, but provisioning, monitoring, suppression, and events all live in the same place, and one team watches all of it.
What does integration look like for an engineering team?
Point your existing mailer at our SMTP relay per stream. Domains and mailboxes can be provisioned through the API with scoped keys. Every delivery outcome is recorded with the receiver’s verbatim response, and if your team wants that data flowing into your own systems, we wire a feed for you. Most teams are sending within a day.
Can you catch a runaway integration before it hurts us?
Yes, structurally. Per-sender rate gates cap what any identity can emit per hour, so a bugged cron job or leaked credential hits its ceiling and stops at the gate. You get the alert and a contained incident, not a quarter-long reputation hangover.
We already have a SendGrid account. Wasted money?
Not necessarily. Existing provider accounts can run as configured paths inside our routing where they make sense, with our monitoring and failover around them. Keep what works, let the routing layer decide when it stops working.
Related reading
Go deeper in the reference library
The problem
A quarterly announcement campaign triggered a complaint spike. Within days, onboarding emails were going to spam, trial conversions dipped, and the postmortem concluded (correctly, and uselessly) that marketing and product email shouldn’t share reputation.
With Egressif
On Egressif, the campaign ran on its own identities. The complaint spike raised alerts on that stream, our team intervened on cadence and list hygiene, and the campaign reputation took the hit it had earned. Onboarding mail, on its own clean identity, never noticed.
Separate what matters from what's loud.
Domains, rough volume, current providers, and what hurts. You will get a straight answer on fit, and a real number, in one conversation.