Productivity

FollowUpThen

Website

FollowUpThen is a personal assistant that sends you exactly what you need at exactly the right moment to get something done. Its best feature is its simplicity. Email 1min@followupthen.com, 1hour@followupthen.com or {any-time}@followupthen.com and you'll get the email back at that time. But look further and you will find advanced syntax supporting

Founded 2010Origin source ↗Checked 2026-09-15

Overview

FollowUpThen is a personal assistant that sends you exactly what you need at exactly the right moment to get something done. Its best feature is its simplicity. Email 1min@followupthen.com, 1hour@followupthen.com or {any-time}@followupthen.com and you'll get the email back at that time. But look further and you will find advanced syntax supporting the most nuanced and complex email productivity workflow. Adding a reminder to any email is a one-second operation thanks to your email client's address autocomplete.

Example use-cases include:

* Following up with sales prospects

* Maintaining relationships

* Task delegation (put FollowUpThen in the bcc field)

* Just-in-time reminders to get a task done (pay bills, etc)

* Hitting inbox zero (forwarding emails to your future)

In today's workplace we are bombarded with realtime demands on our attention. FollowUpThen answers this trend by making work more asynchronous, allowing you to place information in the future, giving you freedom and peace of mind in the present and allowing you actually get something done. Easy to learn. Hard to outgrow.

Company description As recorded 2026-11-08

Founders & team

Previously FollowUpThen, Inc, Gopher

Company history As recorded 2026-11-08

Reilly Sweetland

Founder

Solo technical founder of FollowUpThen, an email-based personal assistant that helps you become a followup master. Previously founded Internet Simplicity (acq. 2016) where we built software for companies like Netflix, Blue Jeans, Disney Family Foundation, Mozilla and others.

Founder profile As recorded 2026-09-15
1team members reported
Source-reported As recorded 2026-09-15

Founded 2010 · Source

News & product activity

Sources & observations

Y Combinator

Profile depthverified profile
Website observationwebsite reachable
Last website check2026-11-11
Location · source statedSan Francisco, CA, USA
Pricing evidenceNo pricing page confirmed
Maturity: Launched · 3 of 6 areas documented

Source-based assessment · automated evidence rules

The company website offers product access through a trial, free start, app download, purchase, or onboarding with existing-account login. Customer adoption is not established by this evidence.

Company website: home Checked 2026-09-16

Sign Up Free

Maturity is an evidence-based assessment, not a success rating. It may understate the current stage where evidence is limited. Coverage records documented areas, not a complete or independently audited company history.

Stage definitions
independent websitesource corroborationreachable websitedescriptive evidenceclassified market and modelsourced peoplesourced founding year