Last updated 08-11-2026
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Serif.ai (formerly EmailTriager)
Serif.ai, formerly EmailTriager, is a Gmail email assistant that sorts incoming mail and drafts replies in your voice while you review and send. It plugs into Gmail with a one-click install, trains on your past emails to build a private knowledge base, and surfaces ready-to-send drafts in about a minute. The product sits in the email assistant category for people drowning in inbox volume.
Compared with generic AI writers, Serif.ai emphasizes True Voice training from your sent mail rather than generic tone presets. It never sends email on your behalf, and billing counts only Accepted Drafts you send with less than 20 percent word changes.
The assistant triages messages, drafts follow-ups, and keeps workflow inside Gmail without a Chrome extension. Serif Inc runs the product, which is CASA Tier 2 accredited and states that training emails are not stored after the knowledge base is built.
Founders, support leads, and operators with heavy Gmail volume use Serif.ai to turn email into reviewing drafts instead of writing every reply from scratch.
One-click Gmail install with drafts appearing directly in your inbox
True Voice training from past emails for replies that match your tone
Automatic inbox sorting plus background draft generation for messages needing replies
Accepted Draft billing counts only sends with less than 20 percent word edits
Private knowledge base you can view or delete; training emails are not stored long term
CASA Tier 2 security accreditation with no auto-send on your behalf
Drafts appear directly in Gmail without a Chrome extension.
True Voice training from your sent mail produces replies that sound like you.
You keep send control because Serif.ai never auto-sends email.
Accepted Draft billing only charges drafts you actually send with minimal edits.
Gmail-only workflow; not built for Outlook or other mail clients on the public site.
Pricing page emphasizes Accepted Draft quotas without listing public dollar tiers during research.
Rebrand from EmailTriager to Serif.ai may confuse users following older links.
What is Serif.ai (formerly EmailTriager)?
Serif.ai, formerly EmailTriager, is a Gmail email assistant that organizes incoming mail and drafts replies in your voice. You review drafts in Gmail and send them yourself; the tool does not auto-send.
Does Serif.ai send emails automatically?
No. Serif.ai never sends email on your behalf. It only creates drafts inside Gmail for you to review, edit, and send when ready.
How does Serif.ai learn my writing style?
Serif.ai reads your past emails once to build a private knowledge base used for drafting. According to emailtriager.com, training emails are not saved after that knowledge base is created.
What is an Accepted Draft on Serif.ai?
An Accepted Draft is a Serif.ai draft you send after changing fewer than 20 percent of the words. Heavily edited or deleted drafts do not count toward your monthly quota on the pricing FAQ.
Is there a free trial for Serif.ai?
Yes. Serif.ai offers a free trial with no credit card required and a one-click Gmail install from the emailtriager.com homepage signup flow.
How do I remove Serif.ai from Gmail?
You can remove Serif.ai at any time and your Gmail account returns to normal with no further drafts created, according to the emailtriager.com pricing FAQ.