ReplyPen vs eesel for customer email

eesel puts AI inside your helpdesk, such as Zendesk, Freshdesk or Intercom, to draft or answer tickets, and connects a Gmail mailbox on request. ReplyPen is built for small businesses answering customer email in their own Gmail or Outlook: a Draft in every customer thread, with a Check note showing what it used. eesel starts at $299 a month for 500 credits; ReplyPen charges €0.25 per conversation at launch.

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	eesel	ReplyPen
Where it works	Inside your helpdesk, such as Zendesk, Freshdesk, Intercom, HubSpot, Gorgias, Help Scout or Front¹	In your own Gmail or Outlook. No helpdesk needed.
A plain Gmail or Outlook inbox	A Gmail integration drafts or sends replies in one Google mailbox. It is not self-serve yet and needs an automation before it starts.²	Connect Gmail or Outlook, including a shared address like support@, and every customer email gets a Draft
Who answers the customer	Draft replies or internal notes for your team to review, or replies straight to the customer¹	You send each Draft. Auto-send for kinds of email you choose is planned for a later version.
Where the facts come from	Your website, Google Drive, Notion, Confluence and files you upload³	Your help center, your website and the replies you sent before
Showing what it used	Says every answer links back to the source it came from³	A Check note under every Draft lists the help articles, website pages and past emails it used
Learning from you	Corrections you give in its chat are written into plain-language instructions you can edit⁴	Learns from the edits you make before sending and keeps a Knowledge log you can read and correct
Price	From $299 a month for 500 credits (a ticket is one credit) to $1,899 for 5,000. Unused credits reset each month; extra credits cost $0.80.⁵	€0.25 per conversation at launch. No monthly minimum, no tiers.

eesel

ReplyPen

Where it works

Inside your helpdesk, such as Zendesk, Freshdesk, Intercom, HubSpot, Gorgias, Help Scout or Front¹

In your own Gmail or Outlook. No helpdesk needed.

A plain Gmail or Outlook inbox

A Gmail integration drafts or sends replies in one Google mailbox. It is not self-serve yet and needs an automation before it starts.²

Connect Gmail or Outlook, including a shared address like support@, and every customer email gets a Draft

Who answers the customer

Draft replies or internal notes for your team to review, or replies straight to the customer¹

You send each Draft. Auto-send for kinds of email you choose is planned for a later version.

Where the facts come from

Your website, Google Drive, Notion, Confluence and files you upload³

Your help center, your website and the replies you sent before

Showing what it used

Says every answer links back to the source it came from³

A Check note under every Draft lists the help articles, website pages and past emails it used

Learning from you

Corrections you give in its chat are written into plain-language instructions you can edit⁴

Learns from the edits you make before sending and keeps a Knowledge log you can read and correct

Price

From $299 a month for 500 credits (a ticket is one credit) to $1,899 for 5,000. Unused credits reset each month; extra credits cost $0.80.⁵

€0.25 per conversation at launch. No monthly minimum, no tiers.

Which one should you choose?

Choose eesel if

Your team already works in a helpdesk such as Zendesk, Freshdesk, Intercom or Gorgias and wants AI inside it.
You want AI to answer routine tickets on its own, with the option to review drafts or notes first.
You want to steer it with plain-language instructions you can read and edit.

Choose ReplyPen if

You answer customer email from Gmail or Outlook and do not want a helpdesk.
You want a Draft for every customer email without setting up automations first.
Your volume is modest or uneven, and you would rather pay per conversation than a monthly bundle that resets.
You want it to learn from the edits you make in your inbox.

What does eesel do well?

eesel works inside the helpdesk a support team already uses, from Zendesk and Freshdesk to Intercom, Gorgias, Help Scout and Front, so its replies and notes land on the ticket itself. It learns from your website and documents, links answers to their sources, and lets each action run on its own or wait for a person. Corrections you give it become plain-language instructions you can read and edit, and there are no per-seat fees.

How do eesel and ReplyPen prices compare?

eesel sells monthly credit bundles: its pricing page lists $299 for 500 credits up to $1,899 for 5,000, where a ticket or chat is one credit. Unused credits reset each month, and extra credits cost $0.80. ReplyPen charges €0.25 for each conversation in which you use its Draft, and nothing for the rest.

For 100 customer conversations a month, ReplyPen costs €25 and eesel’s smallest paid plan costs $299. At 1,000 a month, ReplyPen costs €250 and eesel’s 1,000 credit plan $499. See ReplyPen pricing.

Do you need a helpdesk to use ReplyPen?

No. ReplyPen connects to the Gmail or Outlook mailbox you already answer from, including a shared address like support@, and puts a Draft in the thread of each customer email. The Check note under the Draft lists what it used, and you send the reply from your own inbox, on your computer or your phone.

Questions

Does eesel work with Gmail and Outlook?

eesel's documentation describes a Gmail integration that drafts or sends replies in one Google mailbox, turned on by eesel on request. As of 30 September 2026 its documentation does not describe an Outlook integration. ReplyPen works with both Gmail and Outlook.

What happens when you run out of eesel credits?

eesel's pricing page says its AI pauses until your credits reset, unless you turn on overage at $0.80 per extra credit with a monthly cap. ReplyPen has no credit bundle; each conversation in which you use its Draft costs €0.25 at launch.

Sources

eesel docs: Helpdesks Lists the helpdesks eesel works in, says replies, notes, tags and assignments land on the ticket, lists draft reply or internal note options, and says every helpdesk also has an action that replies straight to the customer. Checked 30 September 2026
eesel docs: Gmail Says the Gmail integration drafts or sends replies in one Google mailbox, is not self-serve yet, and needs an automation before it starts working. Checked 30 September 2026
eesel docs: Knowledge Lists website, Google Drive, Notion, Confluence, uploaded files and Slite as knowledge sources, and says every answer links back to the source it came from. Checked 30 September 2026
eesel docs: Instructions and memory Says a correction you confirm in chat is written into its instructions, as plain sentences you can edit by hand. Checked 30 September 2026
eesel pricing Lists a free plan with 100 credits and Teammate plans from $299 a month for 500 credits to $1,899 for 5,000, one credit per ticket or chat, credits that reset monthly, overage at $0.80, and no per-seat fees. Checked 30 September 2026

Last checked 30 September 2026. Products change often. If something here is out of date, email [email protected] and we correct it.

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