Keeping Client Email Deliverable Through Busy Season

A client who misses a document request because it landed in spam can turn into a missed filing deadline, which is a very different kind of problem than a missed marketing email. Firms that only think about deliverability once a client complains are reacting during the exact window when reacting is hardest, since staff are already at capacity.

A domain that sends a modest, steady volume most of the year and then spikes sharply for engagement letters and reminders can trigger provider throttling, since a sudden jump in volume looks suspicious to a spam filter even when every recipient is a real client. Ramping volume up gradually in the weeks before the spike, rather than all at once, avoids tripping that signal.

Running Mailreach continuously means a firm has visibility into placement well before the busy season starts, which is exactly when a problem is cheapest to fix. Its spam-copy checker is also worth running on a firm's standard deadline-reminder templates, since accounting language, attachments, and portal links can trip filters in ways a generic marketing email wouldn't.

If a firm discovers mid-March that document requests are landing in spam, the calculation changes: there isn't time to wait for a gradual recovery. InboxAlly's concentrated engagement push exists for exactly that kind of time pressure, where a domain needs to recover in days rather than weeks. Accounting staff median wages run near $83,680¹, so an afternoon lost to manually chasing clients who never received a request is a real cost, not a hypothetical one.

Run a seed test on the firm's primary sending domain a full month before the busiest filing window starts, not the week of. If placement looks clean, that's confirmation the domain is ready for the volume spike; if it doesn't, there's still time for a proper recovery before the deadline crunch makes it urgent.

Prepare the domain before the filing rush:

1. Run a seed test on the firm's primary sending domain a full month before the busiest filing window, not the week of.
2. If placement looks clean, treat that as confirmation the domain is ready for the coming volume spike.
3. If placement doesn't look clean, use the remaining time for a proper recovery before the deadline crunch makes it urgent.
4. Ramp sending volume up gradually in the weeks before the spike rather than all at once, to avoid provider throttling.

Many firms have moved document requests behind a secure client portal, but the notification email telling a client to log in and upload something still has to land in an inbox for the portal to do any good. A portal doesn't remove the deliverability problem, it just moves it one step earlier in the chain: now the notification email is the single point of failure instead of the document itself.

Treat the portal notification template with the same scrutiny as any other deadline-critical email, since a client who never sees the notification never logs into the portal at all, no matter how secure it is.

Larger firms often have partners and staff sending from individual addresses in addition to a shared firm domain, which means a placement problem can be isolated to one partner's book of clients rather than showing up firm-wide. A single monitored view across every sending account, not just the primary firm domain, catches a problem that would otherwise only surface when one partner's clients start calling to ask why they never got a reminder.

Assigning one person to own that combined view, even informally, removes the ambiguity that otherwise lets a partner-level problem sit unnoticed since nobody outside that partner's own book would have reason to look for it.

A new client engagement sometimes starts with an email address a client rarely checks, a role inbox with aggressive filtering, or a typo that never gets corrected because nobody's watching for a bounce on a brand-new contact. Treat repeated bounces from a new client as worth a phone call to confirm the right address, rather than letting a document request quietly fail for the second or third time in a row.

Building that check into new-client onboarding, right alongside collecting a phone number and a preferred contact method, closes a gap that otherwise tends to surface for the first time during the busiest week of the year.