Followup.cc might be a bit more popular than Campaign Monitor. We know about 1 link to it since March 2021 and only 1 link to Campaign Monitor. 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.
According to campaignmonitor, the Return on investment in email marketing is 4400%. This implies a $44 return on every $1 spent. Also according to Direct Marketing Association, 66% of consumers have made a purchase online due to an email marketing message they have received in the past. Source: almost 2 years 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
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
FollowUpThen - The simplest way to schedule an email reminder
Brevo - Innovative online Email Marketing solution to manage your contacts, create & send your newsletters and track your results. More than 80 000 clients. Best prices and attractive features.
Gmelius - Gmelius is the first collaboration platform designed for G Suite and your company's daily tools.
Klaviyo - Klaviyo helps brands own the customer experience, grow higher-value relationships, and deliver more personalized marketing experiences across email, mobile, and web.
Right Inbox - Schedule Emails in Gmail To Be Sent Later