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Email Marketing Comparison

Constant Contact vs. Sender

At a glance

At a glance

Constant Contact

Best for

Best for small businesses that want an email marketing platform with templates, automation and an AI content generator, and phone support to get started.

  • Freelancers
  • Small and mid-sized

Sender

Best for

Best for small businesses that want email and SMS together on a budget, with a generous free plan and pricing that scales with the list.

  • Freelancers
  • Small and mid-sized
  • Enterprise

Cataleo does not name a winner. Both statements come from the vendors themselves.

Full Comparison

Criterion Constant Contact Sender
Starting price From $12 / month Lite plan; the price scales with the number of contacts. Prepaying for 12 months saves up to 15 percent. lower value From $7 / month Standard plan for up to 1,000 subscribers and 12,000 emails per month; the price scales with the subscriber count. A Free Forever plan covers up to 2,500 subscribers and 15,000 emails per month.
Free trial Free trial available, no credit card required Free Forever plan for up to 2,500 subscribers and 15,000 emails per month, with Sender branding
API Yes, a v3 REST API for contacts and email campaigns with webhooks and OAuth 2.0 Not stated
Hosting Cloud (SaaS) Cloud (SaaS)
Made in United States Not stated
Campaign types Yes, email campaigns, with 500 SMS messages a month and social posts on the Premium plan Yes, email newsletters and campaigns, plus SMS on paid plans and transactional email, with A/B testing
Automation and journeys Yes, automation templates, one on Lite, three on Standard and unlimited custom automations on Premium Yes, unlimited marketing automation
Segmentation and personalisation Yes, ten custom segments on Standard and unlimited custom segments with dynamic content on Premium Yes, unlimited segmentation for targeted messaging
Templates and editor Yes, an email editor with templates and an AI content generator Yes, a drag-and-drop builder with 1,600+ mobile-responsive templates and a custom HTML editor
Deliverability and testing Yes, subject line A/B testing and automatic resend to non-openers on Standard and Premium Yes, with 24/7 IP monitoring and sender-reputation tracking, plus A/B testing for subject lines, content and send times
Ecommerce and CRM data Yes, contact management with integrations, plus revenue reporting on the Premium plan Yes, integrations for Shopify, WooCommerce, PrestaShop and WordPress
Integrations and API Yes, a v3 REST API for contacts and email campaigns with webhooks and OAuth 2.0 Yes, integrations including WordPress, WooCommerce, Shopify, PrestaShop and Zapier
AI features stated Yes No
Deployment Cloud (SaaS), Browser-based Cloud (SaaS), Browser-based
Support Phone, Chat Chat, 24/7
Company size Freelancers, Small and mid-sized more entries Freelancers, Small and mid-sized, Enterprise
Integrations Not stated WordPress, WooCommerce, Shopify, PrestaShop, Zapier

Compare more tools

Row where the values differ The small markers point at the lower number, the longer list or the stated feature. They describe the data, they are not a verdict.

The short version

Key Differences

  • Starting price Constant Contact From $12 / month Sender From $7 / month
  • Free trial Constant Contact Free trial available, no credit card required Sender Free Forever plan for up to 2,500 subscribers and 15,000 emails per month, with Sender branding
  • Company size Constant Contact Freelancers, Small and mid-sized Sender Freelancers, Small and mid-sized, Enterprise
  • Support Constant Contact Phone, Chat Sender Chat, 24/7
  • AI features Constant Contact Yes Sender No

Every line is one datapoint from the table above, picked automatically. Nothing here is written text.

The trade-offs

Strengths and Limitations

Constant Contact

Strengths

  • AI content generator for on-brand emails, texts and social posts
  • Automatic resend to non-openers and subject line A/B testing on the paid plans
  • v3 REST API with webhooks and OAuth 2.0
  • Prepaying for 12 months saves up to 15 percent

Limitations

  • Prices scale with the number of contacts
  • The Lite plan is limited to one user and one automation template

Sender

Strengths

  • Free plan for up to 2,500 subscribers and 15,000 emails per month
  • Email plus SMS from paid plans, with unlimited automation and segmentation
  • 1,600+ responsive templates and a drag-and-drop builder
  • Ecommerce integrations for Shopify, WooCommerce and PrestaShop

Limitations

  • The free plan carries Sender branding
  • SMS is only available on paid plans

Plans

Pricing

Constant Contact

  • Lite From $12 / month One user, one automation template and basic reporting, with monthly sends up to 10x the number of contacts. Scales with contacts.
  • Standard From $35 / month Three users, email scheduling, subject line A/B testing, resend to non-openers, three automation templates, AI campaign building and ten custom segments.
  • Premium From $80 / month Unlimited users, unlimited custom automations and segments, dynamic content, revenue reporting, dedicated support and 500 SMS messages a month.
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Sender

  • Free $0 / month Up to 2,500 subscribers and 15,000 emails per month, with Sender branding.
  • Standard From $7 / month Up to 1,000 subscribers and 12,000 emails per month; removes branding and adds SMS and A/B testing. Scales with subscriber count.
  • Professional From $14 / month Up to 1,000 subscribers and 24,000 emails per month; adds advanced automation, more seats and priority support. Scales with subscriber count.
  • Enterprise Not stated Unlimited emails, a dedicated success manager, SSO and phone support, quoted by sales.
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What users say

Review Scores · opens after launch

Constant Contact

Ease of use
Not rated yet
User interface
Not rated yet
Onboarding
Not rated yet
Support and service
Not rated yet
Value for money
Not rated yet
Features
Not rated yet

No reviews yet. Be the first to review this tool. Every review is checked for fairness before it appears, and the vendor cannot have one removed.

Sender

Ease of use
Not rated yet
User interface
Not rated yet
Onboarding
Not rated yet
Support and service
Not rated yet
Value for money
Not rated yet
Features
Not rated yet

No reviews yet. Be the first to review this tool. Every review is checked for fairness before it appears, and the vendor cannot have one removed.

Where this comes from

Where this comes from

Constant Contact https://www.constantcontact.com · checked against the official source on 2026-08-19

Sender https://www.sender.net · checked against the official source on 2026-08-22

This table lists factual criteria taken from information the vendors publish themselves. For how we put it together, see the methodology.