---
title: Blog - Seventh Sense
description: Seventh Sense blog - deliverability, send-time optimization, audience engagement, and the future of email marketing. Written by the people who build the platform.
image: https://get.theseventhsense.com/hubfs/synced-assets/default-social-card-v3.png
---

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 Blog

# Notes from the inside of *email AI*.

Deliverability, send-time optimization, audience engagement, and the future of email marketing - written by the people who build Seventh Sense.

[All topics](https://get.theseventhsense.com/blog) [HubSpot](https://get.theseventhsense.com/blog/topic/hubspot) [Marketo](https://get.theseventhsense.com/blog/topic/marketo) [Email Deliverability](https://get.theseventhsense.com/blog/topic/email-deliverability) [Email Marketing](https://get.theseventhsense.com/blog/topic/email-marketing) [eCommerce](https://get.theseventhsense.com/blog/topic/ecommerce-email-marketing)

[![Email marketing frequency best practices illustration](https://get.theseventhsense.com/hubfs/synced-assets/895100f119-email-marketing-frequency-best-practices-2022-1.png)](https://get.theseventhsense.com/blog/email-marketing-frequency-best-practices)

[send time optimization](https://get.theseventhsense.com/blog/topic/send-time-optimization)[send frequency optimization](https://get.theseventhsense.com/blog/topic/send-frequency-optimization)[eCommerce Email Marketing](https://get.theseventhsense.com/blog/topic/ecommerce-email-marketing)

## [14 Email Marketing Frequency Best Practices for 2022](https://get.theseventhsense.com/blog/email-marketing-frequency-best-practices)

We created this list of email marketing frequency best practices for 2022 to give you the tools to identify the best email cadence for your organization.

Ivan LaBianca · Feb 1, 2022 

[Read more →](https://get.theseventhsense.com/blog/email-marketing-frequency-best-practices)

[![A/B testing send time optimization](https://get.theseventhsense.com/hubfs/synced-assets/3fdb704aa8-how-to-effectively-ab-test-send-time-optimization.jpg)](https://get.theseventhsense.com/blog/how-to-effectively-a/b-test-send-time-optimization)

[send time optimization](https://get.theseventhsense.com/blog/topic/send-time-optimization)

## [How to Effectively A/B Test Send Time Optimization](https://get.theseventhsense.com/blog/how-to-effectively-a/b-test-send-time-optimization)

This guide will help you to avoid the most common pitfalls and get the most accurate results possible when A/B testing send time optimization.

Ivan LaBianca · Jul 27, 2021 

[Read more →](https://get.theseventhsense.com/blog/how-to-effectively-a/b-test-send-time-optimization)

[![Seventh Sense workflow actions screen](https://get.theseventhsense.com/hubfs/synced-assets/69046064fb-screen-shot-2018-09-26-at-4-27-09-pm-2.png)](https://get.theseventhsense.com/blog/introducing-seventh-sense-workflow-extensions-for-hubspot)

[HubSpot Workflows](https://get.theseventhsense.com/blog/topic/hubspot-workflows)[Email](https://get.theseventhsense.com/blog/topic/email)[HubSpot](https://get.theseventhsense.com/blog/topic/hubspot)[marketing automation](https://get.theseventhsense.com/blog/topic/marketing-automation)[send time optimization](https://get.theseventhsense.com/blog/topic/send-time-optimization)[send time personalization](https://get.theseventhsense.com/blog/topic/send-time-personalization)

## [Introducing: Seventh Sense Custom Workflow Actions for HubSpot](https://get.theseventhsense.com/blog/introducing-seventh-sense-workflow-extensions-for-hubspot)

Seventh Sense is a powerful email optimization tool, but we recognize it's not always been straightforward to use or easy to maintain. Up until now, integr

Ivan LaBianca · Apr 14, 2021 

[Read more →](https://get.theseventhsense.com/blog/introducing-seventh-sense-workflow-extensions-for-hubspot)

[![Hubspot Smart Send](https://get.theseventhsense.com/hubfs/synced-assets/c5bc479248-hubspot-vs-send-time-optimization.png)](https://get.theseventhsense.com/blog/2016/03/21/hubspot-smart-time-zone-sending-vs-personalization)

[HubSpot](https://get.theseventhsense.com/blog/topic/hubspot)[send time optimization](https://get.theseventhsense.com/blog/topic/send-time-optimization)[time zone sending](https://get.theseventhsense.com/blog/topic/time-zone-sending)

## [HubSpot's Smart Send vs Send Time Optimization](https://get.theseventhsense.com/blog/2016/03/21/hubspot-smart-time-zone-sending-vs-personalization)

How are HubSpot's Smart Timezone Sending and True Send Time Optimization different?

Mike Donnelly · Jan 29, 2020 

[Read more →](https://get.theseventhsense.com/blog/2016/03/21/hubspot-smart-time-zone-sending-vs-personalization)

[![How to Increase Email Engagement with Personalization](https://get.theseventhsense.com/hubfs/synced-assets/72a3d03660-how-to-increase-email-engagement-with-personalizat.png)](https://get.theseventhsense.com/blog/how-to-increase-email-engagement-with-personalization)

[Artificial Intelligence](https://get.theseventhsense.com/blog/topic/artificial-intelligence)[Email](https://get.theseventhsense.com/blog/topic/email)[HubSpot](https://get.theseventhsense.com/blog/topic/hubspot)[Email Marketing](https://get.theseventhsense.com/blog/topic/email-marketing)[send time optimization](https://get.theseventhsense.com/blog/topic/send-time-optimization)[eCommerce Email Marketing](https://get.theseventhsense.com/blog/topic/ecommerce-email-marketing)

## [How to Increase Email Engagement With Personalization](https://get.theseventhsense.com/blog/how-to-increase-email-engagement-with-personalization)

Struggling with email engagement? Learn how to use send-time optimization and dynamic content to personalize emails and attract more customers.

Alyssa Crabbe · Oct 18, 2019 

[Read more →](https://get.theseventhsense.com/blog/how-to-increase-email-engagement-with-personalization)

[![Worst time vs best time](https://get.theseventhsense.com/hubfs/synced-assets/4b3a5d2aed-worst-time-vs-best-time.png)](https://get.theseventhsense.com/blog/testing-worst-time-to-send-email-blast)

[Email Marketing](https://get.theseventhsense.com/blog/topic/email-marketing)[send time optimization](https://get.theseventhsense.com/blog/topic/send-time-optimization)[send time personalization](https://get.theseventhsense.com/blog/topic/send-time-personalization)

## [An Experiment: Sending Email at the Worst Time vs. Personalized Times](https://get.theseventhsense.com/blog/testing-worst-time-to-send-email-blast)

What would happen if we sent our monthly email newsletter at the worst engagement time vs. using send time personalization over 24-hours?

Mike Donnelly · Mar 22, 2019 

[Read more →](https://get.theseventhsense.com/blog/testing-worst-time-to-send-email-blast)

[![Marketo Time Zone Sending](https://get.theseventhsense.com/hubfs/synced-assets/7b1d4df5b5-socialmedia-marketo-sto-draft01.png)](https://get.theseventhsense.com/blog/marketo-smart-time-zone-sending)

[Email Marketing](https://get.theseventhsense.com/blog/topic/email-marketing)[marketing automation](https://get.theseventhsense.com/blog/topic/marketing-automation)[marketo](https://get.theseventhsense.com/blog/topic/marketo)[send time optimization](https://get.theseventhsense.com/blog/topic/send-time-optimization)

## [Marketo Timezone Sending vs. Send Time Optimization](https://get.theseventhsense.com/blog/marketo-smart-time-zone-sending)

For Marketo users with email lists spanning multiple time zones, enabling the new timezone sending feature on email marketing campaigns is a no brainer.

Mike Donnelly · Dec 20, 2018 

[Read more →](https://get.theseventhsense.com/blog/marketo-smart-time-zone-sending)

[![SeventhSense-Good-Health](https://get.theseventhsense.com/hubfs/synced-assets/1c57af6b21-socialmedia-seventhsense-good-health-draft03-1.png)](https://get.theseventhsense.com/blog/7-ways-seventh-sense-is-good-for-your-health)

[send time optimization](https://get.theseventhsense.com/blog/topic/send-time-optimization)

## [7 Ways Seventh Sense is Good for Your Health](https://get.theseventhsense.com/blog/7-ways-seventh-sense-is-good-for-your-health)

Ever sent an email with a broken link, or a spelling error? Ever sent a promotion only to run out of stock on the promoted item?

Mike Donnelly · Oct 3, 2018 

[Read more →](https://get.theseventhsense.com/blog/7-ways-seventh-sense-is-good-for-your-health)

[![Not-Use-STO](https://get.theseventhsense.com/hubfs/synced-assets/3a0bbf65e9-socialmedia-not-use-sto-draft01.png)](https://get.theseventhsense.com/blog/8-reasons-not-to-use-send-time-optimization)

[send time optimization](https://get.theseventhsense.com/blog/topic/send-time-optimization)

## [8 Reasons NOT to Use Send Time Optimization](https://get.theseventhsense.com/blog/8-reasons-not-to-use-send-time-optimization)

It’s no secret I’m a big fan of using machine learning to improve the email experience, but the truth is, send time optimization is NOT for everybody.

Mike Donnelly · Aug 29, 2018 

[Read more →](https://get.theseventhsense.com/blog/8-reasons-not-to-use-send-time-optimization)

[1](https://get.theseventhsense.com/blog/topic/send-time-optimization/page/1)[2](https://get.theseventhsense.com/blog/topic/send-time-optimization/page/2) [→](https://get.theseventhsense.com/blog/topic/send-time-optimization/page/2)

[![Seventh Sense](https://get.theseventhsense.com/hubfs/raw_assets/public/seventh-sense-theme/images/seventh-sense-logo.svg)](https://get.theseventhsense.com/)

The AI engagement layer for HubSpot & Marketo email programs. Reach the inbox. Earn the click. Stop annoying the rest.

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Platform

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© 2026 Telepath Data, Inc. · Seventh Sense is a trademark of Telepath Data, Inc. [Privacy](https://get.theseventhsense.com/trust/privacy) · [Terms](https://get.theseventhsense.com/trust/terms-of-service) · [DPA](https://get.theseventhsense.com/hubfs/synced-assets/8801aebe52-seventh-sense-msa-exh-b-dpa.pdf)

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