Constant Contact vs. Sender

At a glance

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. Nothing has been published here yet, and no score is shown. How a review is checked before it appears is described below.

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. Nothing has been published here yet, and no score is shown. How a review is checked before it appears is described below.

How we check reviews

Before sending, the author has to confirm three things: that they have used the product themselves, that they work neither for the vendor nor for a competitor, and that nobody is paying them for the review. We also ask whether the vendor invited them to write it. That answer is required, either answer is accepted, and it stays with the review.

Every review is read by a person before it appears. An email address is required and is confirmed: we send a link to it, and a review does not reach us until the author opens that link, so a review has a sender who was reachable at least once rather than being anonymous. Where what somebody writes needs backing, we ask them for evidence that they used the product, and a review that does not get it is not published. We publish positive and negative reviews alike, we pay nothing and offer nothing for a review, and we accept none that was bought or incentivised.

What we cannot do is verify a purchase. There is no shop here and no account, so whether the author really used the tool rests on their own declaration, on whatever we ask them for, and on the plausibility of what they write. We say so rather than implying a check that does not exist.

A vendor cannot buy a review, and cannot have one removed or changed because they dislike it. We remove or edit a review only if it breaks our rules or the law, for example a false statement of fact. Paid placement has no effect on which reviews appear or on any score.

Read the full version on our methodology page

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.