Email in a record-volume year: deliverability, frequency, tone

Three things happened at once. Send volume rose sharply as businesses rushed to communicate closures, new hours and new services. Engagement rose too, at first, as people worked from home and read more mail, then flattened as the novelty faded. And mailbox providers, Gmail especially, leaned on engagement signals more heavily to sort the flood, so a sender whose open rates slipped found more mail landing in Promotions or spam.

For a business owner this means the margin for error is thinner. Habits that were tolerable last year, mailing a dormant list, blasting the entire database with every message, skipping authentication, are now the things that get a domain filtered.

Deliverability is the share of your mail that reaches the inbox rather than the spam folder or nowhere. Most of it comes down to a short list.

1. Authenticate your sending domain. SPF and DKIM records in DNS for every platform that sends as you, including your ecommerce platform, CRM and helpdesk, then a DMARC record starting at p=none. Your email platform's help documentation has the exact records.
2. Send from a subdomain. Marketing from news.yourdomain.com or mail.yourdomain.com keeps a promotional reputation problem from affecting the invoices and support replies sent from your main domain.
3. Sunset the unengaged. Anyone who has not opened or clicked in 6 to 12 months goes into a re-engagement series of two or three emails, then off the active list. Mailing them does not help you and it teaches providers that your mail is ignored.
4. Fix the hygiene basics. Remove hard bounces immediately, process unsubscribes within hours, never buy or rent lists, and use double opt-in on forms that attract junk signups.
5. Watch the right numbers. Bounce rate under 2 percent, spam complaints under 0.1 percent, and a steady or rising open rate across your most engaged segment. Set up Google Postmaster Tools for your domain; it shows your reputation and spam rate as Gmail sees them, and it is free.
6. Warm up anything new. A new domain, a new platform or a sudden jump in volume should ramp over two to four weeks, starting with your most engaged subscribers.

The question is not how often you can send but how often a subscriber would choose to hear from you. Right now, with every brand sending more, predictability is the differentiator.

A practical approach: pick a cadence you can sustain, weekly for most retail and consumer brands, every other week or monthly for professional services, and state it on the signup form. Hold it. Then layer behavior-based messages that people expect because they triggered them: welcome series, abandoned cart, post-purchase, replenishment and re-engagement. These automated flows typically generate a disproportionate share of email revenue on a fraction of the volume, and they feel like service rather than marketing.

Segment before you add frequency. Sending twice a week to people who bought in the last 90 days and once a month to everyone else is better for both reputation and revenue than two sends to all. If you plan to increase frequency for a sale period, tell people in advance and offer a lighter option rather than a single unsubscribe link.

Readers have now received several hundred variations of "in these uncertain times." The phrase has become invisible, and the implied sentiment with it. A few rules for writing in this year specifically.

• Lead with the useful fact. New hours, how to order, what is in stock, how returns work now. Put it in the first line and the subject.
• Drop the ceremony. You do not need a letter from the founder to announce curbside pickup. A short, plain email from a named person reads as more human than a formal statement.
• Do not borrow urgency from the news. Countdown timers and "last chance" framing sit badly next to genuine anxiety. If something is scarce, say so factually.
• Sell honestly. People are still buying; they resent being manipulated into it. "We are open and shipping, here is what people are ordering" is a legitimate message.
• Match the visual tone. Stock photos of crowded parties and handshakes now look like they were made on another planet. Audit your templates and automated flows, not just this week's campaign.
• Check every automation. A pre-written flow that says "visit us in store this weekend" will fire regardless of what has changed. Read every automated email as if it were going out today.

Across the accounts we see, the emails earning clicks this spring share a pattern. They are shorter. They answer one question. They often come from a person rather than a brand. Specific formats doing well: operational updates with a clear call to action, behind-the-scenes notes on how the business is coping, how-to content for people stuck at home, plain inventory announcements, and gift card and support-local messages that are honest about why they are being sent.

Plain-text or lightly designed emails are outperforming heavily designed templates for many senders, partly because they feel personal and partly because they render well on phones, where more than half of opens now happen.

Sending to everyone because the message feels important. Importance to you is not relevance to a subscriber who last bought in 2017.

Re-sending to non-openers by default. It doubles the volume seen by the people who ignore you and trains providers accordingly.

Measuring the campaign, not the subscriber. A campaign with a good open rate can still be burning your list if unsubscribes and complaints are climbing underneath.

Ignoring the preference center. Offering frequency and topic choices saves more subscribers than any win-back campaign.

Email sits where growth, brand and technology meet, so we treat the program as one system. Discover audits authentication, list health, platform setup, every automated flow and the last six months of performance by segment, alongside brand voice and what customers are actually asking. Plan sets the sending domain structure, segmentation, cadence, a flow map and a tone guide for this year. Build implements it: DNS records, integrations between the store or CRM and the email platform, rebuilt flows, templates that render well on phones, and reporting that tracks subscriber health rather than campaign vanity. Improve is the ongoing rhythm of testing subject lines, send times and content, pruning the list and adjusting frequency as engagement data comes in.

The content engagement is a representative pattern. A consumer brand had a large, aging list, a single weekly blast to everyone and open rates sliding toward single digits. We moved marketing mail to its own authenticated subdomain, ran a re-engagement series and retired the unresponsive segment, rebuilt welcome, abandoned cart and post-purchase flows, and replaced the generic weekly template with shorter editorial emails written in a consistent, human voice. The active list shrank; revenue per email sent rose by a multiple, and inbox placement at the major providers recovered within two months.