
Create email drafts instantly.
Create email drafts instantly.
Custos creates email drafts in your style and with full context, so you can respond fast and still sound like yourself.




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How it works
Step 1: Install the Google Chrome extension
Install the Custos extension from the Chrome store.
Step 1: Install the Google Chrome extension
Install the Custos extension from the Chrome store.
Step 1: Install the Google Chrome extension
Install the Custos extension from the Chrome store.
Step 1: Install the Google Chrome extension
Install the Custos extension from the Chrome store.

Step 2: Connect your Google account
Connect your Google Calendar and Gmail to Custos so we can write better emails.

Step 2: Connect your Google account
Connect your Google Calendar and Gmail to Custos so we can write better emails.

Step 2: Connect your Google account
Connect your Google Calendar and Gmail to Custos so we can write better emails.

Step 2: Connect your Google account
Connect your Google Calendar and Gmail to Custos so we can write better emails.
Step 3: Reply to emails in your Gmail inbox
Click on 'Reply' or 'Reply all' to any email and a draft response will be generated.
Step 3: Reply to emails in your Gmail inbox
Click on 'Reply' or 'Reply all' to any email and a draft response will be generated.
Step 3: Reply to emails in your Gmail inbox
Click on 'Reply' or 'Reply all' to any email and a draft response will be generated.
Step 3: Reply to emails in your Gmail inbox
Click on 'Reply' or 'Reply all' to any email and a draft response will be generated.


















Your best emails start here.
Your best emails start here.
Your best emails start here.
No more second-guessing or digging through scattered notes to write emails. Your perfect email is generated in seconds.
No more second-guessing or digging through scattered notes to write emails. Your perfect email is generated in seconds.
No more second-guessing or digging through scattered notes to write emails. Your perfect email is generated in seconds.

Respond fast

Respond fast

Respond fast

Respond fast
Reply to emails in seconds.
Reply to emails in seconds.
Reply to emails in seconds.
Instantly generate a draft response in any email chain that sounds like you and understands the context.
Instantly generate a draft response in any email chain that sounds like you and understands the context.
Instantly generate a draft response in any email chain that sounds like you and understands the context.








Tweak your text on the fly.
Easily adjust style, intent, or content by explaining what you want to change.

Refine text quickly

Refine text quickly









Refine text quickly

Refine text quickly

Refine text quickly
Tweak your text on the fly.
Tweak your text on the fly.
Easily adjust style, intent, or content by explaining what you want to change.
Easily adjust style, intent, or content by explaining what you want to change.
Get started
Get the Chrome extension and stop wasting time writing emails.
Try for free
Step into the future of email writing.







