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Updated October 20267 tools compared

AI Follow-Up Email Software: 7 Tools Compared

AI follow-up software writes and sends follow-up messages when someone has not replied to you, and stops when they do. Of the seven tools below, five have AI write the message (autoremind.ai, Outreach, Saleshandy, Mixmax and HubSpot). FollowUp.cc sends automatic follow-ups that you write, and Boomerang reminds you to follow up instead of sending anything.

autoremind.ai is our product. We rank it first because this page is about chasing one person for a reply (an invoice, a proposal, a vendor), which is the job we built it for. Competitor features and prices were checked on each vendor’s own site as of October 2026.

At a glance

autoremind.aiOutreachSaleshandyMixmaxFollowUp.ccBoomerangHubSpot Sequences
AI writes the message
Sends follow-ups automatically
Stops when they reply (email)
Free plan
Starting priceFreeCustom$34/moFree$18/moFree$90/seat

Lowest listed price as of October 2026, from each vendor’s pricing page (annual billing where both are shown). HubSpot lists sequences on Sales Hub Professional. Partial: Boomerang helps you write and reminds you, but does not send the follow-up; HubSpot has a free CRM, but sequences are on a paid plan.

#1

autoremind.ai

Our product

Our product. Built for one-to-one chases: AI writes every follow-up from one sentence

Our grades

AI writingA
Stops on replyA
Setup speedA
ChannelsB
PricingA

autoremind.ai is our own product, so read this entry with that in mind. We put it first because this page is about AI follow-ups for one-to-one chases (an unpaid invoice, a proposal, a vendor who went quiet), and that is the job it was built for. You describe the situation in one sentence. It writes the follow-ups, sends them from your own Gmail in the original thread, makes each one firmer than the last (professional, then firm, then urgent, up to 4 messages), and stops when the recipient replies. It can also chase teammates in Slack. It is not a sales sequencing platform.

Pros

  • AI writes each follow-up from one sentence of context
  • Tone gets firmer with each follow-up: professional, firm, urgent
  • Sends from your own Gmail, in the original thread
  • Detects email replies without reading your inbox (a tracked address sits in the reply path)
  • Slack delivery for chasing teammates
  • Free plan with 3 live reminders, no credit card

Cons

  • Not built for high-volume cold outreach
  • Gmail only for email; no Outlook yet
  • Slack chases do not stop on a reply; you close them yourself
  • No CRM integration
  • Small, young product
Best for: Freelancers, ops people and small teams chasing replies one person at a time, without a CRM or sequence builder
Channels: Gmail, plus Slack for internal chases (no Outlook, no Teams)
Pricing: Free for 3 live reminders, no card. Starter $4/month for 10 live reminders.
Try free, no card needed
#2

Outreach

For enterprise sales teams

Our grades

AI writingB
Stops on replyA
Setup speedD
ChannelsA
PricingD

A revenue platform for sales organizations: sequences across email and calls, AI assistance for emails, calls, meetings and deals, plus a "Personalization Agent". Its AI generates personalized messages, and a prospect who replies is marked finished in the sequence. Pricing is custom: the pricing page asks you to contact sales and describes per-user pricing combined with AI credits. More platform than a freelancer or small team needs for chasing replies.

Pros

  • AI drafts personalized messages
  • Sequences end for a prospect who replies (default setting)
  • Covers forecasting, deals and meetings as well as sequences
  • Works with Gmail and Outlook

Cons

  • No public prices
  • Built for sales teams; heavy for one-off chases
  • AI actions consume credits on top of seats
Best for: Sales teams with a RevOps function and a CRM-centered process
Channels: Email and phone calls (Gmail and Outlook)
Pricing: Custom pricing, contact sales (as of October 2026) (per-user seats plus AI credits, per the pricing page)
#3

Saleshandy

For cold outreach at volume

Our grades

AI writingB
Stops on replyA
Setup speedC
ChannelsA
PricingC

An outbound platform for cold email sequences, with multichannel steps, a lead finder and unlimited sending accounts. Its AI Sequence Copilot generates a full outreach sequence, and by default a prospect who replies is removed from the remaining steps. Plans start at $34/month billed annually ($41 monthly) as of October 2026. AI features use AI credits, and email infrastructure is a separate add-on from $2.99 per mailbox per month.

Pros

  • AI Sequence Copilot writes a full sequence
  • Stops a prospect’s sequence on reply by default
  • Unlimited email accounts and a built-in lead finder
  • 7-day free trial, no credit card

Cons

  • Designed for cold outreach, not chasing people you already work with
  • Sequence setup is campaign work, not a one-line reminder
  • No free plan, only a trial
Best for: Teams and agencies running cold email campaigns to new prospects
Channels: Email, plus phone, LinkedIn and WhatsApp steps
Pricing: Starter $34/mo billed annually, $41 monthly; Pro $76/$99; Scale $149/$189 (as of October 2026) (email infrastructure add-on from $2.99/mailbox/month; AI uses AI credits)
#4

Mixmax

For sales teams working in Gmail

Our grades

AI writingB
Stops on replyA
Setup speedC
ChannelsC
PricingB

A Gmail-based sales engagement tool. Its paid plans include AI features (Smart compose on Inbox Copilot and Suite, an AI sequence builder on Engagement Copilot and Suite), it connects to Claude and ChatGPT, and its sequences stop when someone replies. There is a free plan; paid plans run from $29 to $89 per user per month billed annually as of October 2026.

Pros

  • AI compose and an AI sequence builder on paid plans
  • Sequences stop when the recipient replies
  • Lives inside Gmail
  • Free plan available

Cons

  • Gmail only
  • AI writing and sequences sit on paid plans
  • Aimed at outbound sales rather than one-off chases
Best for: SDRs and AEs running sequences from Gmail
Channels: Email (Gmail)
Pricing: Free; Inbox Copilot $29, Engagement Copilot $49, Suite $89 per user/mo billed annually (as of October 2026) (monthly billing: $34, $65, $105)
Full comparison
#5

FollowUp.cc

For automatic follow-ups you write yourself

Our grades

AI writingD
Stops on replyA
Setup speedB
ChannelsC
PricingB

A lightweight relationship manager for Gmail. Its Auto Follow-ups schedule emails to send automatically if the recipient does not reply, and cancel if you get a response first. You write those follow-ups yourself or pick one of its templates; we found no AI writing on its site. Auto Follow-ups are on the Professional plan ($29/month billed annually, $36 monthly, as of October 2026) and the Salesforce Edition.

Pros

  • Sends the follow-up automatically if there is no reply
  • Cancels the follow-up when a reply arrives
  • Templates if you do not want to write from scratch
  • Reminders work in any email client

Cons

  • No AI writing: you write each follow-up or use a template
  • Auto Follow-ups need the Professional plan or higher
  • Most features work only in Gmail with the extension
Best for: Gmail users who want automatic no-reply follow-ups and are happy to write them
Channels: Email (most features need Gmail and its Chrome extension)
Pricing: Starter $18/mo, Professional $29/mo, Salesforce Edition $40/mo billed annually (as of October 2026) (monthly billing: $23, $36, $50)
#6

Boomerang

For reminders to follow up yourself

Our grades

AI writingC
Stops on replyB
Setup speedA
ChannelsB
PricingA

Boomerang schedules emails and reminds you if you do not hear back: the message comes back to your inbox at the time you choose, and you write and send the follow-up. Its Respondable assistant uses AI to help you write clearer emails as you type. There is a free Basic plan, and paid plans start at $4.98/month billed annually as of October 2026. Versions exist for Gmail and Outlook.

Pros

  • Brings a thread back to your inbox if nobody replies
  • Send Later scheduling
  • Respondable gives AI help while you write
  • Free Basic plan (10 message credits a month)

Cons

  • Reminds you; you still write and send each follow-up
  • Respondable helps you write but does not write the follow-up for you
Best for: People who want a nudge to follow up, not automation that sends
Channels: Email (Gmail and Outlook versions)
Pricing: Basic free; Personal $4.98, Pro $14.98, Premium $49.98 per month billed annually (as of October 2026)
Full comparison
#7

HubSpot Sequences

For teams already on HubSpot

Our grades

AI writingB
Stops on replyA
Setup speedC
ChannelsB
PricingD

Sequences inside HubSpot Sales Hub. Contacts are unenrolled automatically when they reply or book a meeting, and Breeze Assistant can generate sales emails in Gmail from CRM data. HubSpot’s pricing comparison lists sequences on Sales Hub Professional, from $90 per seat per month billed annually as of October 2026. It makes sense if your contacts already live in HubSpot.

Pros

  • Unenrolls contacts on reply by default
  • Breeze Assistant drafts sales emails
  • Enroll contacts straight from CRM records

Cons

  • Needs a HubSpot Sales Hub subscription
  • Priced per seat for sales teams; a lot for occasional chases
Best for: Sales teams already using HubSpot CRM
Channels: Email, plus LinkedIn steps with Sales Navigator
Pricing: Sales Hub Professional from $90/seat/mo billed annually (as of October 2026)
Full comparison

Frequently asked questions

What is AI follow-up software?

AI follow-up software writes and sends follow-up messages when someone has not replied to you, and stops when they do. You say who you are waiting on and why; the tool drafts the follow-ups, sends them on a schedule, and ends the chase once a reply arrives. As of October 2026, autoremind.ai, Outreach, Saleshandy, Mixmax and HubSpot can all have AI draft the message. FollowUp.cc sends automatic follow-ups that you write, and Boomerang reminds you to follow up rather than sending anything.

Which AI follow-up tools actually write the message?

Of the seven tools on this page, five have AI writing, per their own sites as of October 2026: autoremind.ai (writes every follow-up from one sentence), Outreach (AI assistance and a Personalization Agent), Saleshandy (AI Sequence Copilot, using AI credits), Mixmax (Smart compose and an AI sequence builder on paid plans) and HubSpot (Breeze Assistant drafts sales emails). Boomerang’s Respondable helps you while you write, and FollowUp.cc uses follow-ups you write or pick from templates.

Why is autoremind.ai ranked first?

autoremind.ai is our product, and this is our page, so the ranking is our judgment, not a neutral test. We put it first for one specific use: chasing a reply from one person (an invoice, a proposal, a vendor) without setting up a sequence. You describe the situation in one sentence, it writes and sends up to 4 follow-ups from your Gmail, each firmer than the last, and stops when they reply. If you run cold outreach or a sales team, Saleshandy, Outreach, Mixmax or HubSpot fit better.

How do AI follow-up tools know someone replied?

Outreach, Saleshandy, Mixmax, FollowUp.cc and HubSpot all document that a reply ends the follow-ups for that person. autoremind.ai detects email replies without reading your inbox: each follow-up puts a tracked address in the reply path, so a reply reaches autoremind.ai as well as you. Detection is not instant. Slack chases in autoremind.ai have no reply detection; you close those reminders yourself.

What is the difference between autoremind.ai and Outreach?

Outreach is a revenue platform for sales organizations, covering sequences, calls, meetings, deals and forecasting, with custom pricing (seats plus AI credits) as of October 2026. autoremind.ai does one job: it writes and sends follow-ups to one person from your Gmail and stops when they reply, with a free plan of 3 live reminders and a $4/month Starter plan. It works with Gmail and Slack only, not Outlook or Teams.

What is the difference between autoremind.ai and Saleshandy?

Saleshandy is built for cold outreach: campaigns to new prospects, a lead finder, unlimited sending accounts, and an AI Sequence Copilot that writes the sequence. Plans start at $34/month billed annually as of October 2026, with a 7-day trial. autoremind.ai is for warm, one-to-one chases with people you already deal with, such as an overdue invoice or a proposal, and starts free.

Do AI follow-up tools work in Slack?

autoremind.ai can chase teammates in Slack as well as sending email follow-ups from Gmail. Slack chases do not stop on a reply; you close the reminder when you have what you need. None of the other six vendors lists Slack as a channel for sending follow-ups on the pages we checked in October 2026.

How does tone escalation work in autoremind.ai?

Each follow-up is firmer than the one before: professional first, then firm, then urgent, with at most 4 messages per reminder. autoremind.ai writes every step itself from your one-sentence description. In sequence tools you set the steps up yourself, writing each one or having their AI draft it.

Which AI follow-up tool suits freelancers chasing unpaid invoices?

We built autoremind.ai for that case, so we would say autoremind.ai: describe the invoice in one sentence and it chases from your own Gmail, getting firmer each time, until the client replies. The free plan covers 3 live reminders with no card. If you would rather write the messages yourself, FollowUp.cc’s Auto Follow-ups do that from $29/month billed annually as of October 2026.

Describe the chase in one sentence. AI writes the rest.

Free for 3 live reminders, no credit card. Starter is $4/month for 10.

Start free, no card neededFull comparison table
AI writes every follow-upEach one firmer than the lastGmail and Slack