Plugin/Compare
Suggest a plugin

Site building

Marketing & growth

Performance

Security

Selling online

WooCommerce

Solid Mail vs SureMail

Updated 11 Oct 2026. 23 features compared side by side.

Solid Mail

★★★★★★★★★★ 4.2 (52)

Free SMTP plugin from SolidWP (formerly WP SMTP, now moving to Kadence) with provider presets, From-based routing, fallback and an email log.

Free installs60K+
FromFree
UpdatedMay 2026
Visit site Full profile
VS

SureMail

★★★★★★★★★★ 4.7 (25)

Free SMTP and email log plugin from Brainstorm Force with 15+ mailers, backup connections, auto-retry, resend and email simulation.

Free installs200K+
FromFree
UpdatedOct 2026
Visit site Full profile

Choose Solid Mail if…

  • Existing WP SMTP users or simple sites that want free From-address routing across SMTP providers

Choose SureMail if…

  • You need Gmail & Google workspace and failure alerts
  • You also want resend from the log and secure credential storage
  • You want the more complete feature set (81/100 vs 40/100)
  • You prefer the more widely used option

SureMail has 7 that Solid Mail lacks, including Gmail & Google Workspace, Setup wizard and Resend from the log. Both include 12 of the 23 features we track. 1 feature is not yet verified for one or both plugins.

At a glance

Solid Mail
SureMail
40/100
Feature score
81/100
12 of 23
Features included
19 of 23
4.2/5
WordPress.org rating
4.7/5
60K+
Active installs
200K+
0%
Support threads resolved
0%

Feature comparison

Click a screenshot to see both plugins side by side.

Feature
Solid Mail
SureMail
Sending & mailers5/87/8
Any SMTP server KeySend through any SMTP host with your own credentials.
Solid Mail Included

Manual SMTP connection for any host with port, encryption and authentication.

SureMail Included

'Other SMTP' connection takes any host, port, SSL/TLS and optional login.

API mailer integrations KeyNative API connections to SendGrid, Mailgun, Brevo, Postmark and similar.
Solid Mail Partial

Presets for SendGrid, Mailgun, Brevo and Postmark; most connect via the provider's SMTP relay, not its API.

SureMail Included

API connections for SendGrid, Mailgun, Postmark, Brevo, SparkPost, Mailjet, MailerSend, SMTP2GO and more.

Gmail & Google Workspace KeySign in with Google (OAuth) instead of storing a password.
Solid Mail Not included

No Google OAuth; Gmail works only through manual SMTP with an app password.

SureMail Included

Google Workspace / Gmail connection authorises with Google OAuth using your Cloud client ID and secret.

Microsoft 365 / OutlookSend through Outlook or Microsoft 365 with OAuth.
Solid Mail Not included

No Microsoft OAuth; Outlook/365 only via manual SMTP settings.

SureMail Not included

No Microsoft 365 or Outlook OAuth connection among the listed providers; generic SMTP only.

Amazon SESNative Amazon SES integration.
Solid Mail Partial

SES preset uses SES SMTP credentials and endpoint rather than the SES API.

SureMail Included

Dedicated Amazon SES connection.

Backup connection KeyFalls back to a second mailer if the main one fails.
Solid Mail Included

Default connection plus 'Use Alternative Connections on Failure' retries via other connections.

SureMail Included

Connections for the same From email are tried in sequence until one succeeds.

Smart routingSend different emails through different connections by rules.
Solid Mail Partial

Each connection handles emails from its own From address; no other rule types.

SureMail Partial

Emails go to the connection matching their From address; no other routing rules.

Setup wizardGuided setup with a test email at the end.
Solid Mail Not included

Per-provider setup forms but no guided wizard; test email is a separate tab.

SureMail Included

Onboarding wizard (v1.7+) sets up the first connection; the SureContact path ends with a test step.

Logs & monitoring3/76/7
Email log KeyKeeps a record of every email sent from the site.
Solid Mail Included

Mail Log records sender, recipient, subject, time and SMTP errors.

SureMail Included

Logs every email with status, body, headers, attachments and server response.

Resend from the logResend failed or individual emails from the log.
Solid Mail Not included

No resend option in the log.

SureMail Included

Resend one email or bulk-resend selected emails from the log.

Open & click trackingSee whether emails were opened and links clicked.
Solid Mail Not included

No open or click tracking.

SureMail Not included

Logs show delivery status only; no open or click tracking is offered.

Failure alerts KeyAlerts by email, Slack, SMS or push when sending fails.
Solid Mail Not included

No email or chat alerts when sending fails.

SureMail Via add-on

Needs the separate OttoKit plugin (free plan available) using the 'Email Failed to Send' trigger.

Automatic retry & queueQueues emails and retries failed sends automatically.
Solid Mail Partial

Failed sends are retried immediately through another connection; no queue or delayed retries.

SureMail Included

Failed emails are retried automatically across all connections after 30 minutes.

Delivery reportsCharts or weekly summaries of sent and failed emails.
Solid Mail Not included

No charts or summary reports.

SureMail Included

Dashboard charts of sent and failed emails plus an optional weekly email summary.

Log retention & attachmentsControl how long logs are kept, with optional attachment storage.
Solid Mail Partial

Logging can be turned off and logs deleted or exported; no automatic retention period.

SureMail Included

Choose when logs are auto-deleted; optional attachment storage.

Email control2/43/4
Force from name & addressOverride the sender name and address on every email.
Solid Mail Partial

Each connection stores a From name and email, but there is no option to force one sender on all emails.

SureMail Included

Per-connection Force From Email and Force From Name toggles override other plugins.

Turn WordPress emails on or offDisable individual core, update or WooCommerce notification emails.
Solid Mail Not included

No options to disable individual WordPress or WooCommerce emails.

SureMail Not included

No settings to switch off individual WordPress or WooCommerce notification emails.

Stop sending / test modeBlock outgoing email on staging sites or while testing.
Solid Mail Not included

No option to block or simulate outgoing email.

SureMail Included

Email Simulation logs outgoing emails without delivering them.

Test email & diagnosticsSend a test email and see a readable error if it fails.
Solid Mail Included

Email Test tab sends a test through a chosen connection and records errors.

SureMail Included

Send Test Mail from the Connections tab; failures show the provider's response in the log.

Security & admin2/43/4
Secure credential storageStore keys in wp-config constants or encrypted in the database.
Solid Mail Not included

Credentials are kept in the database without encryption; wp-config support was legacy (v1.1.10).

SureMail Partial

Connection credentials are encrypted in the database; no wp-config.php constants.

Multisite supportNetwork-wide or per-site settings on multisite.
Solid Mail Not verified

Multisite support is not documented.

SureMail Not verified

Multisite support is not documented.

No paywalled mailersAll supported mailers are available in the free version.
Solid Mail Included

Free plugin with no paid edition; all providers included.

SureMail Included

No paid version; every mailer is in the free plugin.

Developer hooks & WP-CLIHooks, filters or WP-CLI commands for developers.
Solid Mail Partial

REST endpoints for connections and a few filters; no documented hooks or WP-CLI.

SureMail Included

Filters such as suremails_before_send_email and suremails_provider_list, plus Abilities API; no WP-CLI.

Statuses: Yes Pro Add-on Partial 3rd-party No ?

Pricing compared

Solid Mail Free

Free$0
FreeFree per year, Unlimited

SureMail Free

Free$0
FreeFree per year, Unlimited

Downloads trend

Solid Mail

1,363 downloads last week

SureMail

16,270 downloads last week

Verdict

Based on our feature data Checked 11 Oct 2026

SureMail scores higher on our feature checklist (81/100 against 40/100) and includes Gmail & Google workspace, failure alerts and resend from the log that Solid Mail does not. Check the features you rely on in the table below before deciding.

Biggest differences

Gmail & Google Workspace

Solid Mail: not included. SureMail: included. Google Workspace / Gmail connection authorises with Google OAuth using your Cloud client ID and secret.

Failure alerts

Solid Mail: not included. SureMail: via add-on. Needs the separate OttoKit plugin (free plan available) using the 'Email Failed to Send' trigger.

Resend from the log

Solid Mail: not included. SureMail: included. Resend one email or bulk-resend selected emails from the log.

Secure credential storage

Solid Mail: not included. SureMail: partial. Connection credentials are encrypted in the database; no wp-config.php constants.

Setup wizard

Solid Mail: not included. SureMail: included. Onboarding wizard (v1.7+) sets up the first connection; the SureContact path ends with a test step.

Delivery reports

Solid Mail: not included. SureMail: included. Dashboard charts of sent and failed emails plus an optional weekly email summary.

Written from the feature, pricing and install data on this page, not from hands-on testing. How we compare.

Which would you choose?

0 votes so far. Vote to see the results.

FAQ

Which is better, Solid Mail or SureMail?

SureMail scores higher on our feature checklist (81/100 against 40/100) and includes Gmail & Google workspace, failure alerts and resend from the log that Solid Mail does not. Check the features you rely on in the table below before deciding.

Which has more features?

SureMail includes 19 of the 23 features we track, against 12 for Solid Mail. Feature count is only part of the picture; check which of the differences matter to you.

Is Solid Mail free?

Solid Mail has a free version on WordPress.org.

Is SureMail free?

SureMail has a free version on WordPress.org.

Feature data last changed 11 Oct 2026. Spotted something wrong? Suggest an edit to Solid Mail or SureMail. Some links are affiliate links. We may earn a commission at no cost to you; it never affects our data or rankings.