Followup.cc might be a bit more popular than SharpSpring. We know about 1 link to it since March 2021 and only 1 link to SharpSpring. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Retargeting and remarketing tools: Tools like AdRoll, Perfect Audience (now SharpSpring), and Retargeter allow you to reach visitors who have left your website without converting. Source: over 1 year ago
I'll update this if I find more. For now, this seems to be a partial solution. It's a Gmail add on (except I don't use Gmail) that adds reminders. The options when setting reminders include cancelling it if someone replies, and to remind everyone in the thread. If you combine those two, it seems like — if you use Gmail's web client and have $23/month you're dying to get rid of — a decent way to add the feature. Source: over 1 year ago
Marketo - Marketo's powerful marketing automation software helps marketers master the art & science of digital marketing to engage customers and prospects.
FollowUpThen - The simplest way to schedule an email reminder
ActiveCampaign - Integrated email marketing, marketing automation, and small business CRM. Send beautiful newsletters, setup behavioral based automations, and benefit from sales automation.
Gmelius - Gmelius is the first collaboration platform designed for G Suite and your company's daily tools.
Pardot - Salesforce B2B marketing automation
Boomerang for Gmail - Boomerang for Gmail is a Firefox / Chrome plugin that lets you take control of when you send and receive email messages.