Choose email marketing software around the campaign you actually need to run: a newsletter, a scheduled announcement, or an automated sequence. The editor is only one part of that choice. Audience state, billing definitions, recipient changes, and the ability to leave can rule out a product before design preferences matter.
This is a selection checklist, not a deliverability ranking. Mailchimp provides the catalog's current example. Product details below use official documentation checked on 2026-10-17; the tests are proposed guidance.
Define one campaign before comparing platforms
Record the sender, audience source, selection rule, review owner, trigger, and intended recipient action. A monthly newsletter needs a repeatable preparation and approval flow. A welcome sequence also needs entry conditions, delays, exits, and a response when a person's status changes.
Start with that difference. If you only send a manually prepared newsletter, do not make a sophisticated journey builder the deciding factor. If the business depends on a multi-step sequence, a good newsletter editor is insufficient evidence of fit.
Compare these requirements side by side
| Requirement | What to establish |
|---|---|
| Audience model | How people are identified, segmented, and updated |
| Editor and review | Whether the sender can prepare the actual content and obtain approval |
| Automation | Entry event, delay, branching, exit, and re-entry behavior you need |
| Preference changes | Where a recipient's current state lives and how it reaches connected tools |
| Billing | Which stored contacts and sends count on the required plan |
| Reporting | Whether reports answer the campaign's intended question |
| Portability | Which audience fields and preference records you can recover |
Mailchimp's product site documents campaigns, audience management, and automation. Verify the exact current plan for your required combination; the presence of all three product areas does not mean they share the same limits.
Contact billing: use states, not just list size
Mailchimp's contact guide distinguishes subscribed, unsubscribed, non-subscribed, cleaned, and archived contacts. Its archiving documentation states that archived contacts do not count toward the billing tier. Its additional-charges guide describes billing based on the peak contact total during a billing period for the monthly plans it covers.
The decision consequence is specific: a cleanup late in the period should not be assumed to reduce a charge already determined by the earlier peak. Archiving, unsubscribing, and deletion also have different purposes. Check the rule for your account rather than making a destructive cleanup merely to reach a price point.
Build two estimates: current audience/activity and a plausible busy period. Keep contact states, sends, and optional add-ons separate. Do not compare a subscriber-only assumption in one candidate with all stored contacts in another. The pricing worksheet explains how to label the units.
Test an automation's exit, not only its first email
Using controlled test addresses and fictional attributes, define a short sequence. Record what should happen when a recipient leaves the intended segment, changes an address, or no longer belongs in the flow. Inspect the documented behavior before running it; do not infer every automation reacts immediately to every audience change.
Use this acceptance log:
| Event | Expected result to specify before testing |
|---|---|
| A test person enters | Exactly the intended sequence starts |
| The same event arrives twice | Behavior matches the documented duplicate/re-entry rule |
| A relevant attribute changes | The next action matches the configured branch or exit |
| A preference changes | The state is preserved where your workflow needs it |
| A connected source resends old data | It does not silently undo the intended state |
These are criteria to verify, not claims that Mailchimp or another candidate has passed. Use the integration check when another service writes audience information.
Check the message where it arrives
Use the supported test-send flow to addresses you control. Inspect the layout, links, images, and plain-text alternative where available. Test the actual destination pages and receiving device. A successful preview is not a comparative inbox-placement measurement.
Read reports against the campaign's goal. For a registration announcement, confirmed registrations and the receiving workflow matter more than an unexplained aggregate engagement score. Do not turn a vendor's deliverability claim into your own measured result.
Keep the audience usable outside the sending app
Export the sample through the supported path. Inspect identity fields, segmentation attributes, current preferences, and any history your operating process needs. Record what must be retained in another approved system. Follow your organization's existing consent and audience-handling process; a software selection guide does not establish permission to send.
Choose the candidate that covers the required campaign with clear audience ownership and understandable billing. Use marketing apps to discover the current catalog and the trial plan to document the decision. A broader shortlist is appropriate when the current example fails an essential requirement.
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