The best email marketing software fits how you collect permission, organize contacts and follow up. These five editorial picks differ in setup, data requirements, automation and billing. None guarantees inbox placement; compare the full bill for your audience, sends and required features.
| Platform | Best for | Free plan | Pricing basis | Standout |
|---|---|---|---|---|
| Mailchimp | Beginner campaigns | Verified limited entry | Contacts, features and sends | Guided setup |
| Klaviyo | Commerce data | Verified limited entry | Profiles, sends and channels | Segmentation and reporting |
| ActiveCampaign | Automation | Trial only | Contacts, tier and add-ons | Visual workflows |
| Kit | Creators | Indexed free plan; confirm directly | Subscribers and features | Newsletters |
| Brevo | Campaign and transactional | Daily cap and approval | Volume, contacts and features | Messaging options |
Best email marketing software, compared
1. Mailchimp
Mailchimp is an email marketing platform for campaigns and audience management.
Strengths: templates and guided creation give a small team an approachable starting point.
Limitations: free contact and sending allowances are restricted; growing lists and advanced automation require a paid-plan comparison.
Pricing model: a verified free entry plan and paid offerings influenced by contacts, features and send allowances.
Best for: beginners starting regular permission-based campaigns.
2. Klaviyo
Klaviyo is a marketing platform designed around customer and commerce data.
Strengths: segmentation, automation, store connections and attributed-revenue reporting support commerce-led campaigns.
Limitations: results depend on useful customer and event data; attribution does not prove every reported sale was caused by email.
Pricing model: a verified limited free tier and paid offerings based on active profiles, sends and channel allowances.
Best for: online stores using purchase and browsing signals responsibly.
3. ActiveCampaign
ActiveCampaign is an email platform centered on automation and segmentation.
Strengths: visual workflows and behavior-based follow-ups support more involved customer journeys.
Limitations: workflows take time to configure and maintain. Sales CRM uses modular offerings or add-ons; do not assume it is bundled into a higher email tier.
Pricing model: paid plans and a trial, not a permanent free plan; contacts, tier, channels and add-ons affect cost.
Best for: teams with recurring automation requirements beyond a simple newsletter.
4. Kit
Kit, formerly ConvertKit, is an email platform for creators and newsletter businesses.
Strengths: newsletter workflows, recommendations and digital-product tools suit an audience-led business.
Limitations: advanced automations, sequences and earning from Paid Recommendations depend on paid plans. Direct pricing access was blocked during this review.
Pricing model: official indexed help describes a free Newsletter plan and paid tiers; confirm current access and allowances directly. No numerical free limit is asserted here.
Best for: creators developing newsletters and digital products.
5. Brevo
Brevo combines email campaigns with SMS and transactional messaging options.
Strengths: email-volume-led pricing can suit a contact list larger than regular campaign sending needs.
Limitations: its free tier has a daily send cap and requires account approval. SMS, contacts and advanced features need a separate check.
Pricing model: free and paid tiers with send-volume, contact, feature and channel conditions; not simply unlimited contacts or pure pay-per-send.
Best for: small businesses comparing campaign and transactional email together.
Top picks at a glance
- Simple campaigns: Mailchimp.
- Commerce segmentation: Klaviyo.
- Involved automation: ActiveCampaign.
- Creator newsletters: Kit.
- Send-volume comparison: Brevo.
Deliverability basics
Authenticate your domain with SPF, DKIM and DMARC as applicable to your provider and sending volume. Google has additional requirements for bulk senders. Remove invalid addresses, review inactive contacts and make unsubscribing easy. Build a permission-based audience: confirmed opt-in does not retroactively legitimize purchased or unconsented imported contacts. Follow the Google email sender guidelines and monitor complaints rather than promising inbox placement.
Related reading
Our email marketing reviews explain the tools. Compare free email marketing software before relying on entry allowances. For a simpler launch, see email marketing for small business. Compare Mailchimp vs Klaviyo for general campaigns versus stores. Explore Mailchimp alternatives and read the ActiveCampaign review before designing complex workflows.
Methodology and disclosure
This comparison draws on official product documentation and pricing pages. We distinguish documented features from editorial recommendations and identify facts we could not verify. We do not claim hands-on testing, benchmark results or verified-user-review aggregation for this update. StackReporter may receive compensation through approved affiliate links; editorial references are separate from offer CTAs. Confirm current plans and terms before buying. FTC guidance is relevant to advertising disclosures, but its pages were blocked during this check, so no unverified FTC link is inserted.
Official plan and product checks
mailchimp.com — official source
www.klaviyo.com — official source