A Deliverability Checklist for Workforce Training Vendors

A customer's IT team can set organization-wide rules that block mail on criteria you can't see at all from the outside, sender reputation thresholds, authentication gaps, even specific keywords in a subject line. Testing deliverability only against Gmail and Yahoo tells you close to nothing about how you're actually landing inside the enterprise tenants your real customers use every day. Confirm which mail platforms your largest accounts run on, and test placement against those specifically rather than relying on a generic consumer benchmark.

A recertification reminder is transactional mail, someone genuinely needs it to keep a professional credential current, but if it shares infrastructure with your broader marketing list, a promotional send that lands in spam can quietly take the reminder down with it. Separate sending identities protect the mail your customers are contractually relying on from the mail that's simply building pipeline for next quarter.

Mailreach checks placement release by release and across the specific mail providers you tell it to watch, which is a much closer match to how enterprise buyers actually receive your mail day to day. Run this before each renewal cycle begins, not just once at setup and never again, since a tenant's filtering rules can change on their end without any notice reaching you at all.

If completion rates have been sliding for a while and you suspect the domain has already lost trust with the tenants that matter most to your revenue, InboxAlly's engagement-based rebuilding is meant to run over a defined recovery window measured in weeks. Starting that process during your busiest renewal push means learners feel the effects of a rescue that hasn't finished working yet, right when it matters most. Start it with enough runway to fully stabilize before the deadlines actually hit.

Mailchimp's published open rate across all industries is 35.63 percent¹. Transactional training mail, certificates, reminders, course access links, should run well above that number, since it's mail a learner is actively expecting and often actively waiting on. A number close to or under the all-industry average on transactional mail specifically is a far stronger signal than a soft number on your general promotional newsletter, and it deserves to be investigated first.

A learner rarely emails your support line to say a certificate never arrived; they just quietly stop finishing courses, and the drop only shows up weeks later as a completion-rate number on an internal dashboard, well after the underlying cause has stopped being fresh in anyone's memory. Customer success teams hear about it sooner, usually through a renewal call where a champion mentions their team seems less engaged than last cycle, without anyone connecting that comment to a filtering problem.

Build a short, standing question into renewal check-ins: has anyone on the account mentioned missing an email from us recently. That single question surfaces placement problems months before a completion-rate report would, and it costs nothing beyond adding one line to a call script your team already uses on every renewal call regardless of how the account is performing.

Keep a simple record of completion rates and transactional open rates from a period when things were working well, ideally broken out by the largest customer tenants rather than blended across your whole book. Without that baseline, a slow decline can be hard to distinguish from normal seasonal variation until it's already cost you a renewal conversation. A clear before-and-after comparison also makes the case for budget internally when a rescue or ongoing monitoring tool needs sign-off from someone who wasn't watching the numbers closely enough to see the problem forming.

A working checklist for training vendors:

• Confirm which mail platforms your largest accounts run on and test placement against those tenants, not just Gmail and Yahoo.
• Use separate sending identities for recertification reminders and marketing mail.
• Verify placement before each renewal cycle begins, since tenant filtering rules can change without notice.
• Start any domain rescue well before renewal season, because it runs over a defined window of weeks.
• Keep a baseline record of completion and transactional open rates, broken out by your largest customer tenants.