How to Choose Email Marketing Software: Features, Pricing & Selection Checklist
Most email marketing comparisons rank tools. This guide helps you decide what to rank them against. The right choice depends on your list size, send pattern, automation needs and budget at the size you will be next year. Use the criteria and checklist below, then test two or three tools on a real workflow.
The 9 criteria that matter
- Pricing model and cost at your size. Contacts, active profiles or emails sent.
- Free plan limits. Contacts, sends, automation and branding.
- Automation depth. Triggers, branching, steps and limits per plan.
- Segmentation and data. Tags, behaviour, purchase data.
- Deliverability tools. Domain authentication, list hygiene, reporting.
- Integrations. Your store, CRM, forms and analytics.
- Support. Hours, channels and what is on your plan.
- Compliance. Consent, unsubscribe handling and data-processing terms.
- Exit and migration. Export options and migration help.
1. Understand the pricing model
| Model | Used by | What to watch |
|---|---|---|
| Contacts or subscribers in bands | Mailchimp, MailerLite, ActiveCampaign, Omnisend | Price steps at each band; check the next band up |
| Active profiles | Klaviyo | Definition of active; steep steps near round numbers |
| Emails sent | Brevo | Frequent sends raise cost on small lists |
| Seats plus contacts | HubSpot | Onboarding fees and seat add-ons |
Source: vendor pricing pages, 6 November 2026.
Example: at 10,000 contacts, Mailchimp Standard is $87.67, MailerLite Comfort $89 (monthly billing), Omnisend Standard $132 and Klaviyo $150. See the full pricing comparison.
2. Read the free plan like a contract
Free plans range from 250 subscribers (MailerLite, Omnisend, Klaviyo) to 10,000 (Kit). Check what is locked: automation, branding removal and support often are. Our free email software guide compares limits.
3 and 4. Automation and segmentation
List the three automations that matter most (for most businesses: welcome, re-engagement and a purchase or lead follow-up) and confirm they exist on the plan you can afford. Plan limits differ: Mailchimp Essentials allows up to four flow steps; MailerLite Free allows three automations. If you need branching and scoring, see email marketing vs marketing automation.
5. Deliverability and compliance
- Authenticate your domain with SPF, DKIM and DMARC.
- Large senders to major mailbox providers now face stricter authentication and unsubscribe expectations; confirm the platform supports them.
- Remove bounces and long-inactive contacts before you migrate.
- Make sure unsubscribe handling is built in and honoured quickly.
- Check where data is processed if GDPR applies to you.
We do not test inbox placement, so use a seed test or a small warm-up send on your own domain.
6 to 9. Integrations, support, exit
- Check the integration list for your store, CRM and forms. Mailchimp lists 300+, MailerLite 100+.
- Know what support your plan includes: Mailchimp Free has 30 days of email support; MailerLite Free has a knowledge base only; Omnisend advertises 24/7 on all plans.
- Confirm you can export contacts, templates and automations.
- Ask about migration: Kit and Omnisend advertise free migration.
Selection checklist
- Write your current list size and expected size in 12 months.
- Estimate sends per month.
- List must-have automations and integrations.
- Shortlist three tools using our best email marketing software guide.
- Price each at your size and at double.
- Trial each with one real workflow.
- Check support, export and migration terms.
- Decide, then clean your list before importing.
A Weighted Scorecard You Can Reuse
| Criterion | Suggested weight | What to check |
|---|---|---|
| Total cost at 12-month list size | 25% | Annual price including add-ons |
| Automation fit | 20% | Your top five flows possible without workarounds |
| Integrations | 15% | Store, CRM, forms, analytics |
| Deliverability and support | 15% | Authentication support, support channels |
| Ease of use | 15% | Time to build a flow in a trial |
| Scale ceiling | 10% | Price at double your list |
Score each shortlisted tool from 1 to 5 and multiply by weight. Our methodology uses similar criteria.
Run a Structured Trial
- Pick two or three tools.
- Import 500 contacts to each.
- Build the same welcome flow.
- Send the same campaign.
- Compare time, results and reporting.
- Price at current and double list size.
Red Flags
- Prices that depend on a hidden onboarding or add-on fee.
- No clear export of subscribers.
- Contact counting you cannot verify.
- Support only by documentation.
A Seven-Step Process for Choosing Email Marketing Software
Selection goes wrong when buyers start with feature lists. Work in this order instead.
- 1. Define the job. Newsletter, store flows, lead nurture or a mix? Write it in one sentence.
- 2. Size your list and sends. Current contacts, expected contacts in 12 months, emails per month.
- 3. List your five must-have automations. If a tool cannot do them without workarounds, it is out.
- 4. Set a 12-month budget, not a monthly one.
- 5. Shortlist two or three tools using category guides such as our best email marketing software page.
- 6. Trial with real data for two weeks.
- 7. Decide with a scorecard and check the price at double your list size.
Sizing Your List and Sends: A Quick Formula
Monthly sends equal your list size multiplied by the number of emails per subscriber per month. A 5,000-contact list mailed four times a month sends 20,000 emails, plus automation sends. Compare that against the allowance on each plan: Klaviyo gives 10× profiles, MailerLite Comfort 10× subscribers, Omnisend Standard 12× contacts, Mailchimp Standard 12× the top of the band, ActiveCampaign Enterprise 15× contacts.
| Mailings per month | 5,000 list sends | Fits a 10× allowance (50,000)? | Fits a 12× allowance (60,000)? |
|---|---|---|---|
| 2 | 10,000 | Yes | Yes |
| 4 | 20,000 | Yes | Yes |
| 8 | 40,000 | Yes | Yes |
| 12 | 60,000 | No | Borderline |
| 30 (daily) | 150,000 | No | No |
Illustrative arithmetic; automation sends add to these totals.
Daily mailers should look at unlimited-send plans (Omnisend Pro, MailerLite Power) or send-based pricing such as Brevo.
Must-Have, Should-Have and Nice-to-Have Features by Stage
| Stage | Must have | Should have | Nice to have |
|---|---|---|---|
| Beginner (under 1,000) | Signup forms, templates, basic analytics, domain authentication | Welcome automation, segmentation by tag | A/B testing |
| Growing (1,000–10,000) | Multi-step automations, segmentation, integrations | A/B testing, send-time optimisation, revenue reporting | Landing pages, SMS |
| Scaling (10,000+) | Advanced segmentation, deliverability support, seats and roles | Predictive features, CRM sync | Dedicated IP, SSO |
Cost Modelling Worksheet with a Worked Example
Suppose you have 3,000 contacts today, expect 6,000 in a year, and want automation. Price both sizes on each shortlisted tool and multiply by twelve, adding SMS and seat extras. Our recorded entry prices make a quick illustration: MailerLite Comfort at 2,500 is $29.70 and at 5,000 is $44.10 on yearly billing; Mailchimp Standard is $44.41 and $66.91; Omnisend Standard is $44 and $81; Klaviyo is $60 and $100. Midpoint interpolation across the year gives annual costs of roughly $450 (MailerLite), $670 (Mailchimp), $750 (Omnisend) and $960 (Klaviyo), before extras. The estimate is crude, but it shows which tools deserve a trial.
Use our price estimator and confirm every price on the vendor’s live page.
Questions to Ask Every Vendor
- How are contacts counted, and do unsubscribed or non-subscribed contacts bill?
- What happens when I exceed contacts or sends?
- Which features sit behind higher tiers?
- Is migration help included, and for how long?
- What are the support channels and hours on my plan?
- Can I export all data, including consent history?
- What is the price at double my list?
Quick Matches by Profile
| Profile | Shortlist | Why |
|---|---|---|
| Online store | Omnisend, Klaviyo | Ecommerce workflows and data |
| Creator or newsletter | Kit, beehiiv, MailerLite | Creator features and free tiers |
| Small service business | MailerLite, Brevo | Low cost and simple automation |
| B2B sales-led team | ActiveCampaign, HubSpot | CRM and lead scoring |
| Large list, infrequent sending | Brevo | Send-based pricing |
| Familiarity and integrations | Mailchimp | 300+ integrations |
After You Choose: The First 30 Days
Authenticate your domain, import only consented contacts, build your top three flows, and send to engaged segments first. Set a reminder at day 30 to compare outcomes against the scorecard you used to choose, and at day 90 to re-check pricing against your list size. Revisit the choice annually; vendor pricing and limits change, as the pricing pages we read on 6 November 2026 will too.
Final verdict
Our take: Choose on cost at your future list size and on the automation you will actually build, not on feature counts. For specific situations see small business, ecommerce and newsletters.
Frequently asked questions
How do I choose email marketing software?
Define list size, send volume and automation needs, shortlist three tools, price each at your size and at double, and trial each with a real workflow.
What features should email marketing software have?
Automation, segmentation, deliverability tools, integrations, reporting and support suited to your plan.
Is it better to pay per contact or per email?
It depends on your pattern. Large lists emailed rarely suit volume-based pricing; small, frequent lists suit contact-based pricing.
Do I need a free plan?
Useful for testing, but check limits and the first paid upgrade.
How do I avoid a surprise bill?
Check the next pricing band, add-ons such as SMS and onboarding fees, and the end date of promotions.
Can I switch later?
Yes, but plan for list export, automation rebuilds and domain authentication.
How long should I trial an email platform?
Two weeks of real use on a small segment is usually enough to judge usability and early results.
What is the most important factor in choosing email marketing software?
The match between the automations you need and the plan tier that supports them at your list size, priced over twelve months.
Should I choose annual or monthly billing?
Annual billing is often about 10% cheaper (MailerLite and Brevo both show this), but only commit annually after a successful trial.
When should I switch email marketing software?
When a limit blocks revenue, such as flow caps, missing segmentation, or a price that has outgrown the value, and a trial shows a better fit.
Still comparing options?
Use the PreferWise comparison tool to put tools side by side, or ask for a free shortlist. Listings are alphabetical, with no paid placement in the directory order.
How this guide was made: PreferWise compares public product pages, pricing pages and documentation. We did not independently lab-test deliverability or inbox placement, and plans change often, so confirm current pricing on the vendor site before buying. PreferWise may earn a commission if you sign up through some links on this page; that never changes how tools are ordered or scored. See our affiliate disclosure and how we rank.