Best Free Email Marketing Tools (And Their Limits)

Compare free plans for Mailchimp, ConvertKit, Brevo. Contact limits, send limits, and when you'll pay.

📊 Ranked by estimated true cost, not advertised price•🔄 Updated April 2026•8 tools compared
#1

Brevo

All-in-one marketing platform (formerly Sendinblue). Email-based pricing from Free to $18/mo is attr

$0/mo$27/mo

true cost (advertised + hidden fees)

Daily Send Limit on Free: +$9Brevo Logo on Free & Starter: +$9Landing Pages & A/B Testing Paywall: +$974% confidence
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#2

Google Workspace

Google's business email and productivity suite (Gmail, Drive, Docs, Meet). Per-user pricing with sto

$7/mo$56/mo

true cost (advertised + hidden fees)

Storage Limit Per User: +$7Vault & DLP Require Business Plus: +$15Gemini AI Add-On: +$2085% confidence
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#3

SendGrid

Twilio's email delivery platform for transactional and marketing emails. Free for 100 emails/day, th

$0/mo$105/mo

true cost (advertised + hidden fees)

Dedicated IP Required for Deliverability: +$30Email Validation Add-On: +$50Overage Email Charges: +$2575% confidence
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#4

ConvertKit

Creator-focused email marketing platform (now branded as Kit). Free for 10,000 subscribers but limit

$0/mo$109/mo

true cost (advertised + hidden fees)

Subscriber-Based Pricing Scaling: +$50Free Plan Send Restriction: +$29No A/B Testing on Free or Creator: +$3076% confidence
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#5

Mailchimp

Email marketing platform with automation. Free for 500 contacts, then contact-based pricing creates

$0/mo$113/mo

true cost (advertised + hidden fees)

Unsubscribed Contacts Count: +$30Steep Contact Tier Scaling: +$50Pay-As-You-Go Email Credits: +$2080% confidence
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#6

Microsoft 365

Microsoft's business productivity suite (Outlook, Teams, Office apps). Per-user pricing where deskto

$6/mo$113.5/mo

true cost (advertised + hidden fees)

Desktop Apps Require Business Standard: +$6.5Copilot AI Add-On: +$30Compliance Features Require E5: +$5184% confidence
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#7

ActiveCampaign

Email marketing and CRM automation platform. Contact-based pricing from $15-$145/mo sounds fair unti

$15/mo$128/mo

true cost (advertised + hidden fees)

Contact Tier Scaling: +$64CRM & Sales Require Plus: +$34Transactional Email Separate: +$1577% confidence
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#8

Klaviyo

E-commerce email and SMS marketing platform. Free for 250 contacts, then contact-based pricing that

$0/mo$205/mo

true cost (advertised + hidden fees)

Steep Contact-Based Scaling: +$100SMS Credits Charged Separately: +$75Email Send Limits Per Tier: +$3078% confidence
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