- Why INBOX
Why INBOX?
About us
We want to tell you a story
Why customers love us
Customer reviews
Find out why our customers love using INBOX
How INBOX compares
Compare to MailChimp
Compare us to other vendors in the Email Marketing
- Platform
Features
Email Marketing
Grow your audience
Automation
Send targeted emails automatically
Newsletter Design
Drag & Drop email editor
Landing Pages
Create beautiful pages
Sign Up Forms
Grow your email list
A/B Testing
Send emails with A/B testing
Transactional Emails
Send emails with API or SMTP
Email Verification
Clean your email list
INBOX Cold
Reach new customers
- Partner
- Pricing
- Resources
Learn
Blog
Read best practices and stay up-to-date with news.
Youtube Videos
Email marketing academy
Customer Reviews
What says our clients
Company
Contact Us
Write us
Careers
Join the INBOX team
Integrations
Connect INBOX with popular apps
For Developers
Check our API documentation
A/B Split Testing
A/B Split Testing
Increase loyalty and build deeper engagement by testing what kind of contents your audience like the most. Set up free A/B split testing and find out.

Subject line A/B split test
A/B Split Test is a great way to make your campaigns and email marketing strategy perfect. Create two newsletters and change one variable like email subject, sender details to find out your users favorite.


Sender A/B split test
The sender name helps subscribers recognize your brand; finding the variation that works is important for consistency and trust-building. Test out the sender name and email address to see which variation encourages the most opens.
Content A/B split test
Content is the key. In INBOX, test variations of all aspects of your content including email subject, images, offers etc. In this way, you can get more valuable insights and increase open and click rates.


Automatically pick winning emails
Set the sample size and winning criteria and INBOX sends the winning email to the rest of your contact list automatically. You can also pick the winner manually.
15,000+ Companies Love INBOX





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