Managing Effectiveness of Email Campaigns

A/B tests

Increase your open rates and CTR by testing up to 5 versions of the from field, subject line, content, and delivery date and time. Choose test group sizes and how the winning group is determined. The system enables automated or manual sending of the winning version, based on click, open or conversion statistics.

Frequency capping

Limit the number of messages your subscribers receive with our frequency capping tool. It’s particularly handy with dynamic segments and complex event driven campaigns.

Configure IP addresses when sending

Choose IP addresses and their share in the sending volume for each send or message type. E.g. set 50% of the volume to be sent through IP #1 and the remaining 50% to be sent evenly through remaining IP addresses.

Sending to lists and segments

Send messages to an unlimited number of lists or segments and mix lists with segments. Automated deduplication will ensure no subscriber receives the same message twice.

Sending Time Optimization

Increase customer engagement by sending messages at the optimal time, calculated separately for each recipient. Our proprietary algorithm analyzes each subscriber’s recent email activity and estimates the optimal time of the day and week for sending future messages.

Time Travel

Send messages to each recipient based on the local time of their last location (i.e. 6am in every time zone). The current time zone is calculated based on the geolocation of the subscriber’s last email-related activity.

Email rendering tests

Preview your emails in different desktop email clients (e.g. Outlook, MacOS, and Thunderbird), mobile devices (e.g. iOS, Android) and web-based clients (e.g. Gmail, Yahoo and Outlook). They help identify and remove all HTML code errors to achieve the best rendering in all the popular email clients. Tests incur an additional payment. Please consult your account manager for optimal pricing. Currently, the following email clients are supported:

AOL Mail *, Apple Mail 9, 10, 11, Gmail *, Google Apps *, Lotus Notes 9, Lotus Notes 8.5, Lotus Notes 8, Lotus Notes 7, Thunderbird, Windows 10 Mail, Outlook 2016, Outlook 2013, Outlook 2010, Outlook 2007, Outlook 2003, Outlook 2002/XP, Outlook 2000, *, Office 365 *, Yahoo! Mail *, Android 4.0, Gmail (Android), Gmail (iPhone), (iPhone), iPhone SE, iPhone X, iPhone 7 Plus, iPhone 8, iPhone 7 Plus, iPhone 7, iPhone 6 Plus, iPhone 6, iPhone 5s, iPhone 5, iPad Pro (10.5in), iPad (retina), iPad Mini, BlackBerry Text & HTML, Windows Phone 8

* Tests marked with an asterisk are available in 3 browser variants: Internet Explorer, Chrome, and Firefox.

Spam filter tests

Test email content with anti-spam rules used in popular spam filters (e.g. SpamAssassin, Gmail, Outlook, and Postini). They help optimize content to decrease the probability of messages being filtered into the Spam folder.

Conversion tracking

Track goals set for messages by embedding code within webpages (e.g. track conversions from emails on the purchase confirmation page). Assign monetary values to each of these goals and dynamically track the ROI of each of these goals.


Optimize deliverability and minimize bounces by sending throttled messages to lists with a large number of subscribers. Our system allows you to throttle messages on an hourly basis with a minimum of 60 messages per minute.

Suppression lists

Upload email, domain, and md5 suppression lists, and apply an unlimited number of suppression lists for each send. The system is designed to handle suppression lists which contain millions of entries.

Newsletter pausing

When necessary, pause the sending of a message to adjust its content and recommence the message’s delivery with the modified content with a single click.

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