Free plans only

5 Best Free AI Email Assistants of 2026

By the Rankozo research desk · Updated November 9, 2026

5 of the 10 tools in our best ai email assistants ranking offer a permanent free plan. Spark Mail scores highest among them at 8.8 out of 10.

1. 01

   Spark Mail

   Professionals with several accounts on different providers who want AI help for under $10 a month.

   Free plan; Plus from $8.25 per user per month billed yearly ($99 a year), $10 monthly; Pro $16.58 billed yearly

   Full entry, No. 1 overall

   Paid from

   $8.25

   Score 8.8

2. 02

   Canary Mail

   Individuals who want AI replies and summaries in a full email app at the lowest price.

   Free plan; Growth from $3 per month billed yearly at $36 a year; Pro+ $10 per month billed yearly; lifetime options

   Full entry, No. 3 overall

   Paid from

   $3

   Score 8.4

3. 03

   MailMaestro

   Outlook and Gmail users who want AI drafting without switching to a new email app.

   Free plan; Email from $12 per seat per month billed annually; MaestroDuo with meetings $25

   Full entry, No. 4 overall

   Paid from

   $12

   Score 8.4

4. 04

   Fyxer AI

   Client-facing professionals who want an assistant that drafts every reply and tracks follow-ups.

   Free plan; Pro from $37 per person per month billed annually, $49 monthly; Team $64 billed annually

   Full entry, No. 6 overall

   Paid from

   $37

   Score 8.1

5. 05

   Shortwave

   Google Workspace users who want the most capable AI search and filters in their inbox.

   Free plan; Business from $30 per seat per month, billed monthly; Premier $45; Max $120

   Full entry, No. 7 overall

   Paid from

   $30

   Score 8.0

Scores and prices come from our Best AI Email Assistants ranking, which uses one method for every tool. Questions or corrections: editorial@rankozo.com