The Service:

Deliverability Consulting helps teams understand, diagnose, correct, and stabilize deliverability, without handing over domains, IPs, or tooling.

This is an advisory-first service, separate from Managed Email Infrastructure and Outbound Operations – but it can serve as a bridge into other services we provide.

What This Includes

Diagnostic & Quick-Fix sessions

A fast, working review of authentication, reputation, sending behavior, and inbox placement signals to determine what actually matters and what does not. Many issues can be identified and resolved within these sessions.

Deliverability diagnosis and prioritization

Clear identification of root causes, risk areas, and false signals, with explicit guidance on what to fix now, what to defer, and what to avoid changing.

Authentication and configuration review

Detailed review of SPF, DKIM, DMARC, alignment, and DNS posture as evaluated by real inbox security systems, not just pass/fail tooling.

Reputation and behavior analysis

Assessment of domain and IP health, volume patterns, cadence, complaint risk, and historical signals across all sending streams.

Inbox placement interpretation

Translation of bounce patterns, filtering behavior, and delivery symptoms into actionable insight rather than dashboard noise.

Guided remediation

Step-by-step guidance on corrective actions your team implements, with oversight to reduce risk during changes.

Plus:

Scoped follow-on engagements when issues are systemic or staged changes
are required

Support during ESP, domain, or infrastructure transitions

Post-incident recovery guidance

Advisory support for mixed environments (cold, opt-in, lifecycle, platform email)

Ongoing education for internal teams and stakeholders

Forward-looking guardrails to prevent repeat issues

Why This Matters:

Deliverability failures rarely come from a single setting or tool. They emerge from the interaction between infrastructure, behavior, content, and audience expectations over time.

Most teams don’t need more software or generic advice, they need experienced judgment about what to change, what to leave alone, and how to reduce risk while systems evolve.

Deliverability Consulting exists to provide that clarity before problems compound or scale makes mistakes expensive.

This Is For Teams That:

Want to retain ownership of their email systems

Are experiencing (or anticipating) deliverability issues

Operate mixed environments (sales, marketing, product email)

Are migrating ESPs, domains, or infrastructure

Need a second set of experienced eyes before scaling

Are dealing with an acute issue or post-incident recovery

If email is business-critical and mistakes are costly – but you want to stay hands-on – this is a great option, with the possibility to expand.

Already on Managed Email Infrastructure? Our highest level of Deliverability Consulting is already included at no extra cost — covering all email types, systems, and use cases within your engagement. You don't need a separate consulting engagement.

DIAGNOSTIC & QUICK-FIX

$500 (one-time)

Fast clarity. Targeted corrections. No long tail.

What's Included:

  • 1–2 working sessions with an experienced deliverability operator
  • Authentication and configuration review (SPF, DKIM, DMARC, DNS alignment)
  • Domain and IP reputation checks
  • Sending behavior analysis (volume, cadence, complaint risk)
  • Tooling and workflow red flags
  • Inbox placement symptoms and likely causes
  • Immediate fixes where possible
  • Clear prioritization: what to fix now, what to defer, what to leave alone
  • Dedicated account manager
  • Option to record sessions for internal reference

The $500 fee is fully credited toward any subsequent engagement — including Scoped Engagements, Ongoing Advisory, or Managed Email Infrastructure.

SCOPED ENGAGEMENT

Typically $2,500–$5,000 (one-time)

3–4 weeks

Structured correction, stabilization, or transition.

What's Included:

  • Everything in the Diagnostic & Quick-Fix, plus:
  • Deepened assessment and baseline establishment
  • Domain and IP health analysis across multiple sending surfaces
  • Warming guidance and, where appropriate, hands-on implementation support
  • Data cleanliness and list hygiene advising
  • Customized recommendations based on your constraints and goals
  • Working sessions plus async review
  • Ongoing adjustment as signals evolve
  • Forward-looking guidance at conclusion

Common Use Cases:

  • ESP or infrastructure migration
  • Post-incident recovery
  • Email system rebuild (without managed rails)
  • Establishing internal deliverability standards
  • Preparation for increased or more complex volume

ONGOING ADVISORY

Typically $5,000–$15,000 per quarter

Long-term stability, judgment, and guardrails for teams where email is business-critical.

What's Included:

  • Everything above, extended over time
  • Regular review of sending patterns and emerging risks
  • Interpretation of monitoring signals
  • Review of planned changes before launches, campaigns, or scale events
  • Advisory support during incidents or anomalies
  • Ongoing education for internal stakeholders
  • Continuity of context as systems evolve

Good Fit When:

  • Email is business-critical and deliverability mistakes are expensive
  • You operate mixed environments (sales, marketing, product, transactional email)
  • You're scaling volume and want ongoing expert oversight
  • You've recovered from a crisis and want to prevent another one

What determines pricing

Pricing is determined based on the number of systems, domains, IPs, brands, and internal stakeholders involved. The Diagnostic & Quick-Fix gives both of us a clear picture of what's actually needed before any further commitment. Many issues are fully resolved within the Diagnostic itself. You're never committed to more than the initial $500 to find out.

Our Experience

We work with companies from a wide variety of industries, predominantly in the B2B sphere, but we don't play favorites.

Testimonials

"Beyond deliverability expertise, we wanted an outreach partner with a strong understanding of the VC/startup...'' Read full case study

Arc

Austin Beveridge

"There are so many moving parts of our business – why should we deal with as many moving parts needed for email...'' Read full case study

Stephanie Corder

Stitchroom

"Getting things done more efficiently is a big part of what 8base is about. We understand the importance of fostering...'' Read full case study

8base

Karel Montes

"Our experience with Senders has been great over the years. Lead Strategist (Velimir) and the team are able to adapt...'' Read full case study

Growrk

Carlos Escutia

"We wanted an efficient, scalable way to reach more people who could benefit from our platform. Email outbound...'' Read full case study

SuccessionHR

Peter Demangos

"We wanted to add more volume to our campaigns without worrying about the backend – email warming...'' Read full case study

Pangea

Aeron Sullivan

"Compliance is at the core of our business, and deciding to reach out to prospects meant we wanted to make sure...'' Read full case study

Dataships

Michael Storan

"Senders provides strategists who communicate effectively and execute the strategies that their team formulated for us...'' Read full case study

SUSO Digital

Will Bagnall

Senders Case Studies

See All Case Studies

Momofuku

Founded by chef David Chang, Momofuku is a renowned culinary brand with a nation-wide presence, including restaurants and an online store with delicious goods. They ran into an issue with their email sending – high bounce rates and blocked sending. With hundreds of thousands of people on their email lists eager to stay informed, and an impeccable reputation to uphold, Momofuku wanted to nip this problem in the bud quickly.

  • Momofuku reached out to Senders to run a diagnostic test on their sending infrastructure and find the root cause
  • Senders deliverability experts discovered an issue with their DMARC, which was preventing emails from being sent, as their WordPress wasn't aligned with their SPF
  • Senders provided the most effective solution helping Momofuku restore safe sending, and suggested next steps to ensure everything keeps running smoothly on their end
  • The client reported that Senders helped identify the problem and got them back on track 

Andrew Yeung

Where many others see a problem, Andrew sees an opportunity. His work may center around product leadership at Google (and previously Meta), but his true calling is all about bringing brilliant change-makers together.

How it started: Andrew hosted small-scale dinners for a handful of people at the peak of the pandemic in NYC, to enable safe connections during the most isolating times. How it’s going: His events now count as many as 2,000 tech leaders each, and he has set up 100+ such parties for more than 15,000 people in the past couple of years. Andrew understands that if two minds are better than one, putting two thousand together, preferably in the same room, can make a profound difference.

Given the impact of his community-building efforts, people want him to be able to reach out – and email is often the best way to do so. So, we helped out a bit.

  • Andrew came across deliverability issues that prompted him to get in touch with Senders and look into the best possible solutions
  • The Senders team made the necessary domain configuration adjustments, with a focus on the domain’s email authentication settings to enhance security and deliverability
  • The SPF record was updated to include “Brevo” (Sendinblue) to strengthen authentication and reduce the chance of landing emails into spam
  • The DMARC policy update enabled better readability of DMARC reports for human analysts, which is essential for preventing email spoofing and phishing
  • Senders fixed the missing DKIM setup with Google, so that it now shows the email hasn’t been tampered with in transit
  • As a result, the client now has better, more stable email deliverability and security

Myrina.ai

Stands out as a trailblazer in empowering women entrepreneurs through technology and a supportive community.

Myrina.ai offers a cutting-edge range of AI-powered SaaS marketing and sales tools that cater specifically to female entrepreneurs and women-led businesses. Myrina.ai enables users to automate marketing and sales, while helping them scale their authentic selves while saving time and boosting conversions. Their Myrina’s Army community fosters a supportive platform that champions female entrepreneurs and their values, empowering them to conquer barriers and achieve their business goals. The company's dedication to providing not only top-notch technological solutions but also a platform for networking and mentorship underscores their commitment to fostering success among women in the entrepreneurial space.

Naturally, they wanted to make sure their email sending infrastructure was set up correctly to protect their reputation and successfully reach their recipients. Our deliverability team worked with the client’s team on:

  • Aligning the client’s three domains with Amazon to make sure they are compatible and optimized in order to integrate with Amazon’s system
  • Setting up a proper DMARC policy to protect their domains against unauthorized use and phishing scams
  • Enhancing email deliverability as well as security, so that each email sent from these domains can be properly authenticated and more likely to land in the right inbox
  • As a result, the client can protect the reputation of their business and domains, while safely sending out their email campaigns

Physician’s Choice

Sometimes the sheer number of options of any product can be daunting – how on earth do you pick the right one? This is especially true with supplements, as we can find them just about anywhere, but we can rarely understand a third of the ingredients listed. Unlike most, Physician’s Choice provides supplements with pure, potent ingredients that work. No fillers or “proprietary” blends with unidentified ingredients. They do the research, so you don’t have to.

  • The client’s team spotted issues with DMARC failures in Google Postmaster
  • The Senders deliverability team worked with the client to update the DMARC configuration to enable report collection
  • The client is now able to obtain detailed reports to diagnose the exact causes of the failures and prevent them in the future with proper DMARC setup

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Email Spam Test Tools

To deep-dive into your deliverability challenges, prevent future issues, and improve inbox placement, try our complimentary Email Spam Test Tool.

Get started

Use Cases

It’s more than just keeping your emails out of spam – our approach protects your domain reputation, while helping you grow your sales pipeline with valuable, relevant prospects. Our infrastructure + methodology enable you to scale your cold campaigns safely and focus on engagement and closing deals. 

Senders Protocol works for every kind of email, including your newsletter and opt-in marketing campaigns. Setting up and keeping your sending systems in good shape will boost your inbox placement, and free up your time to focus on strategy and creative – although we can help with those, too.

If you’re using email as one of your main internal communication channels – sending out employee newsletters, company announcements, invites, etc – deliverability matters here, too. Our methodology focuses on safety across the board, so your internal emails can grow on pace with your team, and always land where they need to.

Time-sensitive, system-triggered emails are a crucial part of your customer experience, as well as your overall reputation. To make sure they arrive on time (every time) and land in the inbox, Senders optimizes your infrastructure and separates transactional from marketing or cold emails (using subdomains/IPs), preventing one from harming the other’s performance.

Book a Free Troubleshooting Session

Our Deliverability expert will put your sending problems in perspective, determine the root cause, and suggest the best solutions to implement.

Book Your Session

FAQ

What does Deliverability Consulting actually involve?

Deliverability Consulting is an advisory-first service. We diagnose, review, analyze, and guide remediation of email deliverability issues – working within your existing systems, tools, and infrastructure.

This means we look at your authentication setup, your domain and IP reputation, your sending behavior and volume patterns, your tooling and workflows, and how all of those pieces interact with each other and with the inbox environments you’re targeting. From there, we provide clear, prioritized guidance on what to fix, what to leave alone, and how to reduce risk as your systems evolve.

What this is not: we don’t take over your sending infrastructure, manage your domains or IPs, or run your campaigns. You retain full ownership and operational control of your email systems. If you’re looking for someone to handle the infrastructure layer for you, that’s our Managed Email Infrastructure service. If you want end-to-end campaign execution, that’s Outbound Operations.

Deliverability Consulting is for teams that want to stay hands-on but need experienced judgment to understand what’s actually going on beneath the surface – and what to do about it.

Read More

How does the engagement start, and what’s the process?

Every Deliverability Consulting engagement begins with a Diagnostic & Quick-Fix session. This is a $500 one-time fee that covers 1-2 working sessions focused on fast clarity: what’s actually wrong, what matters, and what doesn’t.

From there, the engagement takes one of three paths based on what the diagnostic uncovers. If the issue is straightforward and can be resolved within those initial sessions, we wrap up. Problem solved, no ongoing commitment needed.

If the diagnostic reveals systemic issues that require staged work – an ESP migration, a post-incident recovery, an infrastructure rebuild – we move into a Scoped Engagement: a clearly defined project with a 3-4 week timeline and a fixed scope.

If email is business-critical and you need ongoing expert oversight, we offer an Ongoing Advisory tier: quarterly or multi-month engagements that provide regular review, interpretation, and guidance as your systems evolve.

The $500 Diagnostic fee is fully credited to any subsequent engagement, so it’s effectively a no-risk starting point. You get actionable insight immediately, and you’re never committed to more than you need.

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What happens during the Diagnostic & Quick-Fix session?

The diagnostic is a working session, not a sales call. We get into your systems and evaluate what’s actually going on.

Typical focus areas include authentication and configuration review (SPF, DKIM, DMARC, DNS alignment), domain and IP reputation checks, sending behavior analysis (volume patterns, cadence, complaint risk), tooling and workflow red flags, and inbox placement symptoms and their likely causes.

Where possible, we make immediate fixes during the session itself. Many deliverability issues – misconfigured authentication, DNS inconsistencies, obvious workflow problems – can be identified and corrected on the spot.

For issues that run deeper, the diagnostic establishes the context and priorities that guide any follow-on work. It answers the key question: “Is this a small fix that can be resolved now, or the tip of a bigger problem that requires a scoped engagement?”

You get clear prioritization of issues, actionable fixes you can implement immediately, guidance on what not to touch yet, and – if needed – a clear recommendation for next steps. Sessions can be recorded for your team’s internal reference.

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How is this different from what our ESP’s support team tells us?

ESP support is platform-specific. Their view is limited to what’s happening inside their system, and their guidance is shaped by their platform’s capabilities and constraints. They don’t have visibility into your broader sending environment, and they’re not evaluating how different systems, streams, and behaviors interact with each other.

We look at the full picture. That includes your cold outbound, but also your transactional email, marketing email, lifecycle email, and any other sending streams that share domains, IPs, or sender identity. Deliverability problems are rarely isolated to one channel – they’re usually the result of interactions across the entire sending ecosystem that no single platform can see.

Beyond scope, there’s a depth difference. ESP support can tell you whether your SPF record passes. We can tell you why your SPF record passes but your email is still getting filtered – and what the actual cause is, which might have nothing to do with SPF at all.

Deliverability Consulting provides system-level judgment that spans tools, platforms, and email types. That wider context is what allows us to identify the real causes of deliverability issues, not just the symptoms that show up in one platform’s dashboard.

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Why not just use deliverability tools and figure it out ourselves?

Deliverability tools are useful – we use them ourselves. What they provide is data. What they don’t provide is judgment.

The challenge with deliverability is that most failures don’t come from a single misconfigured setting. They come from interactions between systems: a DNS change that was technically correct but created an alignment inconsistency, a volume increase that crossed an invisible threshold for a specific inbox provider, a complaint pattern that’s only visible when you look across sending streams rather than within one tool.

Tools will show you a green checkmark on your DMARC record while your email is quietly being routed to spam because of a completely different issue the tool doesn’t evaluate. They’ll report delivery rates without distinguishing between inbox and spam folder. They’ll flag “problems” that are actually normal behavior and miss the ones that are actually hurting you.

Experienced interpretation – the ability to read signals in context, distinguish noise from genuine issues, and know what to change versus what to leave alone – is what makes the difference between dashboard monitoring and actually solving deliverability problems. That’s what this service provides.

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Do you work with both cold email and opt-in/marketing email?

Yes. Deliverability Consulting applies across all email contexts, not just cold outbound.

We work with cold email and sales teams, ecommerce and DTC brands sending fully opt-in marketing and lifecycle email, SaaS companies operating mixed environments (sales outreach plus opt-in product or marketing email), platforms and marketplaces where email is core to the product or business process, and teams navigating ESP or domain migrations regardless of email type.

This breadth matters because deliverability problems rarely stay contained within one sending stream. A reputation issue on your marketing email can affect your cold outbound. A misconfiguration in your transactional email can drag down your domain’s overall credibility. Understanding how all of your email streams interact is essential to diagnosing and fixing the real issues.

Whether you’re sending cold outbound into enterprise inboxes or running high-volume opt-in campaigns to consumer audiences, the underlying principles of sender credibility, infrastructure health, and behavioral consistency apply – and that’s where our expertise lives.

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What kinds of problems do you typically uncover?

The issues we find most commonly fall into a few categories:

Authentication misalignment – SPF, DKIM, or DMARC configurations that technically pass but don’t align correctly with actual sending behavior. These create friction with advanced filtering systems that look beyond simple pass-fail results.

DNS configuration gaps – subtle inconsistencies, missing records, or configurations that don’t match the profile of a durable, legitimate sender. These often go undetected because basic diagnostic tools report everything as “fine.”

Volume and cadence issues – sending patterns that cross invisible thresholds, inconsistent volume that triggers behavioral flags, or ramp-up approaches that are too aggressive for the target environment.

Complaint risk – conditions that generate complaints the team doesn’t know about, including suppression failures, list hygiene gaps, or messaging patterns that push engagement in the wrong direction.

Language and content patterns – wording that triggers advanced filtering in specific industries or enterprise environments. This has very little overlap with the “spam word” lists available online and is learned through direct exposure to real filtering behavior.

The common thread is that most of these issues are systemic, not surface-level. They’re the product of how multiple systems interact over time – not a single setting you can toggle and fix.

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Can you help during an active deliverability crisis?

Acute crisis support is a common entry point for Deliverability Consulting.

Whether it’s a sudden drop in inbox placement, a post-incident recovery after a blacklisting or spam complaint spike, an ESP transition that went wrong, or a domain reputation collapse, the diagnostic framework applies under pressure.

We work quickly to identify the actual cause – not just the symptoms – and provide a clear remediation path.

Crisis situations typically begin with a Diagnostic & Quick-Fix session focused on rapid triage: what happened, what’s still happening, what needs to stop immediately, and what can wait. From there, if the issue requires staged recovery work, we move into a Scoped Engagement with a defined timeline and clear milestones.

The advantage of working with us during a crisis is that we’ve seen these failure patterns before – across industries, ESPs, infrastructure setups, and sending environments. That pattern recognition means we can identify root causes faster and avoid the trial-and-error approach that often makes crises worse before they get better.

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What does Deliverability Consulting cost?

All engagements start with a $500 Diagnostic & Quick-Fix session (1-2 sessions). This fee is fully credited to any subsequent engagement, so it’s effectively free if you continue working with us.

From there, pricing depends on the scope:

Scoped Engagements – for systemic issues, migrations, or post-incident recovery – typically run $2,500 to $5,000 as a one-time project fee, completed within 3-4 weeks.

Ongoing Advisory – for teams where email is business-critical and ongoing expert oversight is needed – typically runs $5,000 to $15,000 per 3-month term.

Pricing is determined by the number of systems, domains, IPs, brands, and internal stakeholders involved. We’re transparent about what drives the cost, and the Diagnostic session gives both of us a clear picture of what’s actually needed before any further commitment.

Many issues are fully resolved within the Diagnostic & Quick-Fix session itself. You’re never committed to more than the initial $500 to find out.

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Do you take over our sending infrastructure?

No. Deliverability Consulting is advisory and client-operated. You retain full ownership and control of your domains, IPs, ESPs, tools, and workflows throughout the engagement.

We diagnose, advise, and guide remediation. Your team implements the changes. We provide oversight during implementation to reduce risk, but we don’t take custody of any part of your sending environment.

This is an intentional design choice. Many teams need expert deliverability guidance but want to – or need to – maintain internal ownership of their systems. Deliverability Consulting is built for that model.

If you decide at any point that you’d rather hand off infrastructure management entirely, our Managed Email Infrastructure service is designed for that. The two services are cleanly separated, and moving between them is straightforward. But Deliverability Consulting never assumes or requires that transition.

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What if we’re already working with Senders on Managed Email Infrastructure?

If you’re on a Managed Email Infrastructure plan, our highest level of Deliverability Consulting is already included at no additional cost. That covers all email types, systems, and use cases within your engagement – not just the cold outbound running on our infrastructure.

So if you’re experiencing deliverability issues with your marketing email, transactional email, or any other sending stream, that’s already within scope. You don’t need a separate consulting engagement.

Standalone Deliverability Consulting is designed for teams that are operating their own infrastructure and need advisory support without managed rails. If you’re already on Managed Email Infrastructure, you’re covered.

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How long does a typical engagement last?

It depends entirely on what the Diagnostic uncovers. There’s no default timeline or open-ended retainer.

Some issues are fully resolved in 1–2 sessions – a misconfigured authentication record, a DNS inconsistency, a workflow adjustment. In those cases, the $500 Diagnostic & Quick-Fix is the entire engagement.

Systemic problems – an ESP migration, a post-incident recovery, an infrastructure rebuild – typically require a Scoped Engagement of 3–4 weeks with defined milestones and clear deliverables.

Teams that need ongoing oversight – because email is business-critical and the sending environment is complex or evolving – move into Ongoing Advisory on quarterly terms.

The diagnostic determines what’s needed. Nothing is open-ended by default, and you’re never locked into a scope that exceeds the problem. If a 2-session diagnostic solves the issue, that’s the engagement. If it reveals something deeper, we define the next step clearly before proceeding.

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