Mailchimp email newsletter: authenticate the domain and use one audience, then the rest is straightforward

Sending a newsletter from Mailchimp is straightforward. The two things that decide whether it arrives and keeps arriving are done before you write a word: authenticate your own sending domain, and put everybody in one audience rather than several. Domain authentication stopped being optional when the large mailbox providers tightened their requirements for bulk senders, so a newsletter sent from a free mailbox address now risks the spam folder on day one regardless of how good it is. And because Mailchimp bills on contacts, the same person sitting in three audiences is three contacts and three unsubscribe states, which is the mistake that is hardest to unwind later.

This page covers the setup in order, the audience decisions, the send itself and the reports worth reading. For what goes inside the issue, the block structure and the lines every send has to carry, see the email newsletter template.

The setup, in the order that matters

• Use a domain you control as the sender. Not a free mailbox address. The from address should be at your own domain, with a real inbox behind it that somebody reads.
• Authenticate that domain in Mailchimp. This means adding the DNS records Mailchimp gives you so that your sends are signed as coming from you. It removes the sent on behalf of wording some clients show, and it is what the large providers now expect from anybody sending in volume.
• Then set up a DMARC record for the domain, which tells receiving servers what to do with mail that fails those checks. Start with a monitoring policy rather than a strict one, read what it reports for a few weeks, and tighten it once you can see what is sending as you.
• Create one audience. Mailchimp's own guidance is a single audience for most accounts, because tags and segments do the dividing without duplicating people or your bill.
• Decide the signup method and whether it double opts in. Double opt in costs you some subscribers and gives you a list that engages, which is now the thing that protects your delivery.
• Fill in the campaign footer details once: the business name and a genuine postal address, which is a legal requirement for commercial email in the United States and in several other markets, and a working unsubscribe.

Audiences, tags, segments and groups

Thing	What it is	Use it for
Audience	The top level container. Each one has its own signup forms, settings and unsubscribe state	One, unless you genuinely run two unrelated businesses from the same account
Tag	A label you apply, manually or by automation	How somebody arrived, what they bought, whether they attended an event
Segment	A saved set of conditions, evaluated when you send	Who to send this issue to, built from tags, activity and fields
Group	Interests the subscriber chooses themselves	Letting people pick which kinds of email they want, which lowers unsubscribes

The practical rule: tags are facts you record, groups are preferences they state, segments are questions you ask at send time. Getting that straight once prevents the most common Mailchimp mess, which is six audiences that overlap and cannot be reported on together.

Building and sending the issue

• Build one template and save it. Design once, then start every issue from the saved template rather than from a blank layout. The time saving is the point, and consistency is what makes a newsletter recognisable in a crowded inbox.
• Write the subject line and the preview text as a pair. The preview text should add the fact the subject line left out, never repeat it.
• Send a test to yourself and to one other mailbox on a different provider, then open both on a phone. Most newsletter errors are visible in ten seconds on a small screen.
• Check the link list before sending. One broken link in the main item is the most common regret, and Mailchimp will show you every link in the campaign.
• Pick a send time and keep it. A predictable slot builds the habit, and the best time is the one you can hold every month rather than the one an article recommends.
• Schedule rather than sending live where your plan allows it, so a last look is possible before it goes.

Keeping the list healthy, which is the whole game after the first year

• Watch the unsubscribe and complaint rates per send, not the totals. A single bad send is visible immediately in those two numbers.
• Suppress the long term unengaged. People who have not opened anything in a year lower your delivery for everybody else. Archive or remove them rather than paying to mail them.
• Never buy a list, and never import one somebody else collected. It breaks Mailchimp's own terms, it burns your authenticated domain's reputation, and the domain is the asset you cannot replace.
• Clean bounces promptly. Hard bounces are removed automatically; repeated soft bounces are worth reviewing by hand on a small list.
• Re-permission rather than re-import. If a list has gone cold for a year, send one honest message asking people to confirm, then let the rest go.

The wider deliverability picture, including what the providers check and what the flows around a newsletter should be, is in email marketing deliverability and list health.

The reports worth reading, and the one to ignore

• Click rate, by link. The most honest number in the report, because a click is a decision. The link map tells you which item earned attention.
• Unsubscribes and complaints. Per send, against your own baseline.
• Revenue or enquiries attributed, if you can connect the send to an outcome. One tagged link to a landing page does this without any integration work.
• Open rate, treated carefully. Mail privacy features on some clients pre-load images, which inflates opens and makes the figure unreliable as a comparison across providers or across time. Use it as a rough trend on your own list and never as a target.

Costs and limits

Mailchimp charges by contacts and by sends, with a free tier and several paid plans, and the thresholds and features move. Read the current pricing page before committing to a plan rather than trusting any figure in an article, including this one, and check three things specifically: how contacts are counted, including whether unsubscribed and archived people count towards your total, what the monthly send limit is on your plan, and which features you are relying on sit behind which tier. Scheduling, some automation and some reporting are tier dependent, and discovering that on send day is avoidable.

Mailchimp newsletters: the questions that come up

Can I send a newsletter from my Gmail address?

You can enter one, and you should not. Sending bulk mail that claims to come from a free mailbox provider fails the authentication checks those providers themselves now apply, which lands the newsletter in spam. Use your own domain and authenticate it.

One audience or several?

One, in almost every case. Separate audiences duplicate contacts, duplicate your bill, split unsubscribe states and make reporting impossible to combine. Use tags and segments for the divisions you actually need.

How do I move a list from another provider?

Export from the old system with the subscription date and source if you have them, import into one audience, tag the import with its origin and date, then authenticate your domain before the first send. Send to your most engaged segment first rather than the whole list, so a reputation problem shows up small.

Why did my open rate jump or collapse?

Usually a measurement change rather than a behaviour change, because privacy features on some mail clients affect whether an open is recorded. Look at clicks and replies to find out what really happened.

What is a good frequency?

Whatever you can sustain without the quality dropping, with monthly as the floor for most lists. Less often than monthly and people forget they subscribed, which shows up as complaints rather than unsubscribes.

Do I need a physical address in the footer?

For commercial email in the United States, a valid physical postal address and a working opt out are required, and similar rules apply in other markets. A mailbox service address is acceptable in most cases, and leaving it out is one of the few things in email that is not a judgement call.

The archive is a published asset

One setting worth a thought: whether your newsletter has a public web archive. A newsletter that exists only in inboxes is invisible to everything that reads the web, and the same material published as pages can be found, linked and quoted later, including by an assistant answering somebody's question about your subject. That is a real argument for writing issues that stand alone rather than issues that only make sense to somebody who got the last one, and for giving the good ones a proper page rather than leaving them in a campaign archive nobody links to. Measuring whether assistants name you covers how to check what they can currently find.