Post SMTP vs SMTP.com (2026): which should you pick?
As of Nov 13, 2026, Post SMTP grades higher than SMTP.com: 2.6 against 1.8 out of 4.0.
Checked Oct 18, 2026 and Nov 13, 2026 · graded Oct 18, 2026 and Nov 13, 2026 by ToolGPA
Post SMTP grades higher on value for money and the free plan. They get the same grade on features, ease of use and platforms.
Price, platforms and features side by side. The table says where each price was read and when.
Post SMTP
WordPress SMTP plugin with email logs, alerts and backup mailers
SMTP.com
SMTP relay and email API sold in monthly volume plans from 50,000
Which one is for you
Pick Post SMTP if
- Fits if you run WordPress and want failed-email alerts on your phone
- Works for sites that need a backup SMTP connection without paying
Look elsewhere if
- Skip it if you don't run WordPress, as it only works inside it
- Tight if you stay on free: one-click Gmail and Microsoft 365, Amazon SES, Zoho and auto-resend are Pro
- Watch out: Pro pricing couldn't be read, as the vendor's site showed a maintenance page
- Watch out: it needs an account with a separate mailer
Pick SMTP.com if
- Fits if you already send 50,000 emails a month and want one flat monthly price
- Works for senders moving from SendGrid or Mailgun who want help with the switch
Look elsewhere if
- Skip it if you want to try sending before you pay, since there's no free plan or trial
- Too light for apps that need webhooks, templates or incoming email, which the listing doesn't mention
- Pricey if you send a few thousand emails a month, as the smallest plan is $25 for 50,000
- Watch out: Reputation Defender and Insight Engine each add 20% of the plan price, $5 a month each on Essential
- Tight if you want a dedicated IP on Essential, which sends from a shared one until the $80 plan
How we grade them
| 2.6GPAPost SMTPGood | 1.8GPASMTP.comWeak | |
|---|---|---|
| Value for money | BThe free plugin covers logs, alerts and a backup connection. Pro pricing couldn't be read, because the vendor's own site showed a maintenance page on 13 November 2026. | CGraded on 50,000 emails a month: Essential is $25 for exactly that, on a shared IP, the middle of this category at that volume. Reputation Defender and Insight Engine add $5 a month each, and a dedicated IP means Starter at $80 for 100,000. |
| Free plan and trial | BFree plugin on WordPress.org with a setup wizard, email logs, failure alerts, a fallback mailer and mailers such as SMTP.com, Brevo and Mailgun. | FNothing free: no free plan and no trial. The smallest plan is $25 a month, so you pay before you've sent a single email. |
| Features | CSetup wizard, logs, alerts, fallback, DNS checks and a mobile app. One-click Gmail and Microsoft 365 setup, Amazon SES, Zoho, auto-resend and batching are Pro. | CSMTP relay and an email API, detailed delivery reports, dedicated IPs from the $80 plan, and paid add-ons that weed out bad addresses as you send. It handles the sending, but nothing on record covers templates, webhooks or inbound email. |
| Ease of use | CNo store rating on record. You install it in WordPress and connect a mail provider. | CJudged on how fast a developer sends a first email: you choose a plan and pay before you get to send, then use SMTP or the API. No rating on record. Managed onboarding and migration help are offered if you're moving from another provider. |
| Platforms and integrations | BRuns inside WordPress, with an iOS and Android app, and connects to Gmail, Microsoft 365, SES, Brevo, Mailgun, SendGrid, Postmark and Slack. | BWeb, with an SMTP relay and an email API, plus WordPress, Shopify, Google Forms, Google Docs, Wufoo, Airtable, Trello and Slack. No desktop or phone app, so B is the top. |
| Best for | a WordPress mail plugin with logs and a phone app | senders already past 50,000 emails a month |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Post SMTP and SMTP.com. How we grade
Where they differ
- Post SMTP also covers reports.
At a glance
| Post SMTP | SMTP.com | |
|---|---|---|
| Pricing | Free plan | Paid |
| Starts at | Not published | $25 per month for 50,000 emails |
| Free plan | Free plugin on WordPress.org with a setup wizard, email logs, failure alerts, fallback mailer and mailers such as SMTP.com, Brevo and Mailgun. | None |
| Free trial | None listed | None listed |
| Web | ||
| iOS | ||
| Android | ||
| Made by | Saad Iqbal | J2 Global Canada, Inc. |
| Price read from | wordpress.org | smtp.com |
| Checked | Nov 13, 2026 | Oct 18, 2026 |
Worth knowing
Post SMTP
- Runs only inside WordPress and needs an account with a separate mailer.
- The plugin listing marks Microsoft 365 and Gmail one-click setup, Amazon SES, Zoho Mail, auto-resend of failed emails and email batching as Pro features.
- Pro pricing could not be read: the vendor's own site, postmansmtp.com, showed a maintenance page on 2026-11-13.
SMTP.com
- There is no free plan or free trial; the smallest plan is $25 a month for 50,000 emails.
- Reputation Defender and Insight Engine each cost 20% of the plan price; on Essential that is $5 a month each.
- Essential sends from a shared IP; a dedicated IP starts with the $80 Starter plan.
Key features
Post SMTP
- Setup wizard
- A three-step wizard configures a mailer using API keys, with a one-click setup for Gmail and Microsoft 365 listed as Pro features.
- Email logs
- Lists sent and failed emails with their status and error messages, and can be filtered.
- Failure alerts
- Alerts by email, Slack, SMS through Twilio or push notification when an email fails to deliver.
- Fallback mailer
- A backup SMTP connection sends email when the main mailer is unavailable.
- Mobile app
- A companion app shows email status and failure alerts on a phone; resending and multi-site monitoring are Pro.
- DNS record checks
- A spam score checker looks at a domain's SPF, DKIM and DMARC records.
SMTP.com
- SMTP relay and email API
- Send from an app or another platform through SMTP or the email relay API, with documentation for developers and help with custom API integrations.
- Dedicated IPs
- Every plan from the $80 Starter plan up sends from a dedicated IP address; Essential uses a shared one.
- Reputation Defender add-on
- Checks addresses at the moment of sending and suppresses invalid ones, to cut hard and soft bounces and protect your domain and IP reputation.
- Insight Engine add-on
- A daily report with extra data about the people on your lists, meant for building customer profiles and new segments.
- Migration help
- Managed onboarding and help moving over from providers such as SendGrid and Mailgun, with in-house support on every plan.
Plans
Post SMTP
Free$0
Free plugin from WordPress.org: setup wizard, email logs, reports, failure alerts and a backup SMTP connection.
SMTP.com
Essential$25
per month for 50,000 emails
Shared IP, email relay API, support and detailed reporting. Overage is $0.000625 per email ($0.63 per 1,000).
Starter$80
per month for 100,000 emails
Adds a dedicated IP address, with the same API, support and reporting.
Growth$300
per month for 500,000 emails
Dedicated IP, email relay API, support and detailed reporting.
Business$500
per month for 1,000,000 emails
Dedicated IP, email relay API, support and detailed reporting.
High Volume SendersCustom
At least 250 million emails a month: a dedicated instance of the platform, its own IP and mail server, and a dedicated account manager.
Common questions
Which is cheaper, Post SMTP or SMTP.com?
As of Nov 13, 2026, Post SMTP publishes no starting price, and SMTP.com starts at $25 per month for 50,000 emails.
Which has a free plan, Post SMTP or SMTP.com?
As of Nov 13, 2026, only Post SMTP has a free plan. SMTP.com does not.
Which platforms do Post SMTP and SMTP.com run on?
As of Nov 13, 2026, only Post SMTP lists iOS and Android apps. Both list a web app. A platform missing from a listing is one its maker's pages did not mention.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.