Why MailChimp?

More than 8 million people from around the world use MailChimp to send 14 billion emails every month.

Our data science team analyzes those emails for insights that make MailChimp smarter. We use those insights to create new features, publish research, and make tools that help you do some analysis of your own.

MailChimp is built to support lists with millions of subscribers. We're serious about email marketing, and we're ready to help companies of all sizes.

We help you get your work done anywhere.

MailChimp works on desktop browsers, tablets, and mobile devices. So whether you’re at the office, at home, or somewhere in between, you can always work on campaigns and check in with your team.

MailChimp Mobile

With just a few taps, you can manage your lists, add new subscribers, send campaigns, and view your reports on our native mobile apps.

Download For Android

Android 4.0+
MailChimp account

Download For iOS

iOS 7.0+
MailChimp account

MailChimp Editor

Edit draft campaigns and collaborate with your colleagues and clients, even when you're not online.

Download For Android

Android 4.0+
MailChimp account

Download For iOS

iOS 6.0+
MailChimp account

We have features for serious marketers.

A/B split testing

People who A/B test their email campaigns get 11% better open rates and 17% more clicks.


Create and schedule automated messages to welcome new subscribers, follow up on purchases, nurture leads, and more.


Track trends and monitor list growth, see the impact your campaigns have on social networks, measure your ROI, and more. We have reports for everything.

We'll make your team more productive.

We know that for many organizations, email marketing is more than a one-person job. That's why MailChimp is optimized to make collaboration easy and efficient.


Share comments right inside the drag-and-drop editor, send test emails with notes about your drafts, and collect replies to drafts in line with the rest of your comments. Several people can even edit campaigns at one time.

Multi-user accounts

Set up a MailChimp account as an Admin, and grant permission to Managers, Authors, and Viewers, based on the level of access you want them to have.

We’ll grow with you.

Even if you're just getting started, we have simple tools to help you build your list and engage your subscribers. As you get bigger and better, MailChimp will scale right along with you.

Target your readers

Segment your list by signup date, location, purchase activity, and more. We make it easy to get your message to the people who want to hear it most.

Trigger emails from website traffic

Send automated messages as follow-ups to signups, website views, JavaScript events, and other actions using Goal.

Track revenue

Use MailChimp's e-commerce features to track online orders, set up automated messaging, and generate more revenue from your campaigns.

Build on your success

When the time is right, use MailChimp's API to customize your email experience as you scale. Then send with Mandrill, which is built on our powerful infrastructure and connects seamlessly with MailChimp.

We make it easy to share.

MailChimp's features help you share your campaigns across social networks and meet your customers where they are.

Social sharing

Share your campaigns on social networks with one click in the campaign builder, and add buttons to your campaigns so your readers can spread the love, too.

Social Profiles

Our Social Profiles feature layers your mailing list with publicly available social data, so you can learn more about your subscribers and send targeted campaigns based on their profiles.

Social integrations

MailChimp integrates with the social networks you and your customers already use. Automatically tweet and share campaigns, and allow people to sign up for your newsletter on Twitter or Facebook.

We’ve got connections.

MailChimp is integrated with all your favorite web services. More than 738,622 people use our API.

We know how to deliver email.

MailChimp has an advanced delivery infrastructure and a smart delivery team. We watch our rates like a hawk (and you should too).


MailChimp’s abuse-detection technology keeps our system clean by predicting bad behavior in a campaign before it even gets out the door. Omnivore is always at work in the background, analyzing emails, processing new data, and preventing abuse on a massive scale.

Abuse Monitoring

Our internal abuse desk monitors our system with Cloudmark and Barracuda, the same powerful filtering technology that major ISPs use to block spam.


Large corporations and financial institutions use authentication to prove their emails aren't forgeries, so they don't get blocked by overly suspicious filters. MailChimp supports DKIM, SenderID, SPF, and Domain Keys automatically and free.

IP Address Ranges

To protect our deliverability, Mailchimp uses hundreds of IP addresses located in multiple data centers. These IPs are grouped into different reputation levels based on list‑member activity. We monitor our IP acceptance rates with ReturnPath, a leading third‑party deliverability vendor, and depending on which group of IPs an email is sent from, inbox acceptance rates range from 96‑99 percent.

Bounce Management

We don’t just analyze your bouncebacks to clean your list—our abuse monitoring system detects potential delivery issues by actively scanning bounce logs for cryptic messages from spam filters and email servers.

ISP Feedback Loops

We’re registered with all the major ISPs to receive alerts whenever your recipients report your campaigns as junk or spam. If that happens, we instantly unsubscribe those members from your list in order to keep you (and MailChimp) from being blocked in the future. We’re on feedback loops with AOL, Hotmail, Comcast, Yahoo, USA.net, Cox, Earthlink, and more.


Even though most ISPs are transitioning to feedback loops, some still employ whitelists. MailChimp is registered with them and actively works to maintain our whitelisted status.

Industry Memberships

We stay current on industry and technology standards as members in email and ISP organizations including the ESPC (Email Sender and Provider Coalition), AOTA (Authentication and Online Trust Alliance), MAAWG (Messaging Anti-Abuse Working Group), and EEC (Email Experience Council).

We let you design your way.

Code your own templates, or use our email designer to create campaigns without coding a thing. MailChimp’s responsive email templates make your newsletters look great on mobile devices, too.

We invest in our own infrastructure.

Though we like to think MailChimp has a fun and creative vibe both in and outside of the office, we take engineering and infrastructure very seriously. MailChimp has hundreds of servers spread out around the world, and uses CDNs and Akamai Web Application Accelerator to ensure speed and stability. With multiple copies of our users' data ready at all times, we've got ample redundancy, the ability to do maintenance without downtime, and many layers of protection against data loss.

We send A LOT of email.

We started working on MailChimp in 2001, and we’ve built a rock-solid infrastructure that supports millions of customers. In a typical month, we deliver 14 billion emails—that’s 236TB of outbound data across our delivery servers. Our servers handle:

emails per day
subscribers added per day
API calls per day
opens per day
clicks per day

We’re here to help.

MailChimp's support team works around the clock to help our customers send better email, and our knowledge base is updated daily with in-depth articles and answers to specific questions.

Useful resources

Our free guides and reports are full of information about using MailChimp and email marketing in general.

Expert partners

If you're looking for one-on-one help with your email marketing projects, check out our directory of MailChimp experts.

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