Best Email Clients in 2026
Updated
In short: Zoho Mail is ranked #1 of 143 as of 7 October 2026, ahead of Mailbutler Smart Assistant and Spark Mail. The best-ranked option with a free plan is Mailbutler Smart Assistant. The lowest first paid tier on this page is Zoho Mail at $0.08/mo.
An email client can shape how you keep up with messages across accounts and devices, and whether related tasks such as scheduling or calendar use fit into the same routine. Compared on account limit, app coverage, calendar tools, offline access, scheduled sending, and unified inbox, the entries offer concrete differences to weigh. Free-plan availability and paid-from pricing add cost context. Zoho Mail, Mailbutler Smart Assistant, and Spark Mail are among the clients to compare. Consider how many accounts you manage, whether you need access offline, and which listed app coverage works for the devices you use.
143 email clients ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
143ranked
17free plans on this page
$0.08/molowest paid tier
7 Oct 2026last checked
Input list Email clients 25 channels on this page · 138 of 200 spec lines stated by the makers
Ch Tool Free planPaid fromApp coverageAccount limitUnified inboxOffline accessScheduled sendingCalendar tools Spec sheet Score
01 Zoho Mail Free planYesPaid from$1/user/moApp coveragenot statedAccount limitnot statedUnified inboxnot statedOffline accessnot statedScheduled sendingnot statedCalendar toolsnot stated 2/8spec lines stated 9.7
02 Mailbutler Smart Assistant Free planYesPaid from$4/user/moApp coveragenot statedAccount limitnot statedUnified inboxnot statedOffline accessnot statedScheduled sendingnot statedCalendar toolsnot stated 2/8spec lines stated 9.4
03 Spark Mail Free planYesPaid from$8.25/user/moApp coveragenot statedAccount limitnot statedUnified inboxYesOffline accessYesScheduled sendingYesCalendar toolsYes 6/8spec lines stated 9.3
04 Epistles Mail Free planYesPaid from$35/user/moApp coverageallAccount limit2 accountsUnified inboxYesOffline accessYesScheduled sendingYesCalendar toolsYes 8/8spec lines stated 9.3
05 eM Client Free planYesPaid from$39.95/user/moApp coverageallAccount limit2 accountsUnified inboxYesOffline accessYesScheduled sendingYesCalendar toolsYes 8/8spec lines stated 9.0
06 Mailspring Free planYesPaid fromnot statedApp coveragedesktopAccount limitnot statedUnified inboxYesOffline accessYesScheduled sendingYesCalendar toolsNo 6/8spec lines stated 9.0
07 Mozilla Thunderbird Free planYesPaid fromnot statedApp coverageEmail, calendar, contacts, and tasksAccount limitnot statedUnified inboxYesOffline accessYesScheduled sendingYesCalendar toolsYes 6/8spec lines stated 8.9
08 Spike Free planYesPaid from$4/user/moApp coverageallAccount limit3 accountsUnified inboxYesOffline accessnot statedScheduled sendingYesCalendar toolsYes 7/8spec lines stated 8.9
09 Newton Mail Free planYesPaid from$5/user/moApp coverageallAccount limit2 accountsUnified inboxYesOffline accessYesScheduled sendingYesCalendar toolsYes 8/8spec lines stated 8.8
10 Canary Mail Free planYesPaid from$3/user/moApp coverageallAccount limitnot statedUnified inboxYesOffline accessYesScheduled sendingYesCalendar toolsYes 7/8spec lines stated 8.8
11 Dove Free planYesPaid fromnot statedApp coverageallAccount limitnot statedUnified inboxYesOffline accessYesScheduled sendingnot statedCalendar toolsYes 5/8spec lines stated 8.6
12 Workspace ONE Boxer Free planNoPaid from$5.40/user/moApp coveragemobileAccount limit3 accountsUnified inboxYesOffline accessnot statedScheduled sendingnot statedCalendar toolsYes 6/8spec lines stated 8.5
13 Shortwave Free planYesPaid from$30/user/moApp coverageallAccount limitnot statedUnified inboxNoOffline accessnot statedScheduled sendingYesCalendar toolsYes 6/8spec lines stated 8.5
14 Missive Free planNoPaid from$14/user/moApp coverageallAccount limit15 accountsUnified inboxYesOffline accessYesScheduled sendingYesCalendar toolsYes 8/8spec lines stated 8.4
15 Saymail Free planYesPaid fromnot statedApp coverageallAccount limitnot statedUnified inboxYesOffline accessnot statedScheduled sendingnot statedCalendar toolsNo 4/8spec lines stated 8.4
16 Airmail Free planYesPaid fromnot statedApp coveragenot statedAccount limit1 accountsUnified inboxYesOffline accessYesScheduled sendingYesCalendar toolsYes 6/8spec lines stated 8.3
17 Superhuman Mail Free planNoPaid fromnot statedApp coverageallAccount limitnot statedUnified inboxNoOffline accessYesScheduled sendingYesCalendar toolsYes 6/8spec lines stated 8.2
18 BlueMail Free planYesPaid fromnot statedApp coverageallAccount limitnot statedUnified inboxYesOffline accessYesScheduled sendingnot statedCalendar toolsYes 5/8spec lines stated 8.2
19 Gmelius Free planNoPaid from$19/user/moApp coverageallAccount limitnot statedUnified inboxYesOffline accessnot statedScheduled sendingYesCalendar toolsYes 6/8spec lines stated 8.1
20 Polymail Free planNoPaid from$10/user/moApp coverageallAccount limit2 accountsUnified inboxYesOffline accessnot statedScheduled sendingYesCalendar toolsYes 7/8spec lines stated 8.0
21 Velo Free planYesPaid fromnot statedApp coveragedesktopAccount limitnot statedUnified inboxYesOffline accessYesScheduled sendingYesCalendar toolsYes 6/8spec lines stated 8.0
22 Twobird Free planYesPaid fromnot statedApp coverageallAccount limitnot statedUnified inboxYesOffline accessnot statedScheduled sendingnot statedCalendar toolsYes 4/8spec lines stated 8.0
23 EmailOps Free planYesPaid fromnot statedApp coveragenot statedAccount limitnot statedUnified inboxnot statedOffline accessnot statedScheduled sendingnot statedCalendar toolsnot stated 1/8spec lines stated 7.9
24 Edison Mail Free planYesPaid fromnot statedApp coveragenot statedAccount limitnot statedUnified inboxYesOffline accessnot statedScheduled sendingYesCalendar toolsYes 4/8spec lines stated 7.8
25 Ferry Email Free planYesPaid fromnot statedApp coveragedesktopAccount limitnot statedUnified inboxYesOffline accessnot statedScheduled sendingnot statedCalendar toolsYes 4/8spec lines stated 7.8
Compare all 25 in a table
| # | Tool | Score | Free plan | From | Free plan | Paid from | App coverage | Account limit |
|---|---|---|---|---|---|---|---|---|
| 1 | Zoho Mail | 9.7 | Free plan | $0.08/mo | Yes | $1/user/mo | — | — |
| 2 | Mailbutler Smart Assistant | 9.4 | Free plan | $7/mo | Yes | $4/user/mo | — | — |
| 3 | Spark Mail | 9.3 | Free plan | $8.25/mo | Yes | $8.25/user/mo | — | — |
| 4 | Epistles Mail | 9.3 | Free plan | $2.92/mo | Yes | $35/user/mo | all | 2 accounts |
| 5 | eM Client | 9.0 | Free plan | $3.33/mo | Yes | $39.95/user/mo | all | 2 accounts |
| 6 | Mailspring | 9.0 | Free plan | — | Yes | — | desktop | — |
| 7 | Mozilla Thunderbird | 8.9 | Free plan | Free | Yes | — | Email, calendar, contacts, and tasks | — |
| 8 | Spike | 8.9 | Free plan | $4/mo | Yes | $4/user/mo | all | 3 accounts |
| 9 | Newton Mail | 8.8 | Free plan | $5/mo | Yes | $5/user/mo | all | 2 accounts |
| 10 | Canary Mail | 8.8 | Free plan | $3/mo | Yes | $3/user/mo | all | — |
| 11 | Dove | 8.6 | Free plan | $20/mo | Yes | — | all | — |
| 12 | Workspace ONE Boxer | 8.5 | No | $5.40/mo | No | $5.40/user/mo | mobile | 3 accounts |
| 13 | Shortwave | 8.5 | No | $30/mo | Yes | $30/user/mo | all | — |
| 14 | Missive | 8.4 | No | $14/mo | No | $14/user/mo | all | 15 accounts |
| 15 | Saymail | 8.4 | Free plan | €3.25/mo | Yes | — | all | — |
| 16 | Airmail | 8.3 | Free plan | $2.50/mo | Yes | — | — | 1 accounts |
| 17 | Superhuman Mail | 8.2 | No | $2.08/mo | No | — | all | — |
| 18 | BlueMail | 8.2 | No | — | Yes | — | all | — |
| 19 | Gmelius | 8.1 | No | $19/mo | No | $19/user/mo | all | — |
| 20 | Polymail | 8.0 | No | $10/mo | No | $10/user/mo | all | 2 accounts |
| 21 | Velo | 8.0 | Free plan | Free | Yes | — | desktop | — |
| 22 | Twobird | 8.0 | Free plan | Free | Yes | — | all | — |
| 23 | EmailOps | 7.9 | Free plan | Free | Yes | — | — | — |
| 24 | Edison Mail | 7.8 | No | — | Yes | — | — | — |
| 25 | Ferry Email | 7.8 | Free plan | Free | Yes | — | desktop | — |
Is your tool on this list?
Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.
Questions about this list
Which email client is ranked first on Specifiction?
Zoho Mail is ranked #1 of 143 with a score of 9.7. Mailbutler Smart Assistant is second and Spark Mail third.
How many of these have a free plan?
17 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Zoho Mail has the lowest first paid tier we found: $0.08/mo.
How is this list ranked?
Ranked on what each maker publishes, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing.
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