Sorted by starting price

9 Cheapest AI Email Assistants of 2026

By the Rankozo research desk · Updated November 9, 2026

Among the 10 tools in our best ai email assistants ranking, Canary Mail has the lowest verified paid starting price at $3 per user per month. Prices below are quoted from each vendor's US pricing page.

1. 01

   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

   Starts at

   $3

   Score 8.4

2. 02

   SaneBox

   People who want a cleaner inbox in the email app they already use, on any provider.

   No free plan; Snack from $4.54 per month billed every 2 years (1 account); Lunch $7.46; Dinner $22.04

   Full entry, No. 9 overall

   Starts at

   $4.54

   Score 7.8

3. 03

   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

   Starts at

   $8.25

   Score 8.8

4. 04

   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

   Starts at

   $12

   Score 8.4

5. 05

   Missive

   Small teams that handle client email together and want AI inside a shared inbox.

   No free plan; Starter from $14 per user per month billed yearly (up to 5 users); Productive $24; Business $36

   Full entry, No. 10 overall

   Starts at

   $14

   Score 7.6

6. 06

   Microsoft 365 Copilot in Outlook

   Companies already on Microsoft 365 that want AI in Outlook and the rest of the Office apps.

   Copilot Business add-on from $18 per user per month paid yearly (promotional, normally $21); bundles with Microsoft 365 from $23.50

   Full entry, No. 5 overall

   Starts at

   $18

   Score 8.2

7. 07

   Superhuman

   Executives and heavy email users on Gmail or Microsoft 365 who value speed above price.

   No free plan; Starter from $25 per member per month billed annually; Business $33

   Full entry, No. 2 overall

   Starts at

   $25

   Score 8.5

8. 08

   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

   Starts at

   $30

   Score 8.0

9. 09

   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

   Starts at

   $37

   Score 8.1

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