These 10 apps lead WordPress Plugin Directory's Smtp category as of September 2026 — ranked by user rating, review count, and audit score, refreshed every 24 hours from the canonical WordPress marketplace listing.
Discover the top-rated smtp apps available on WordPress Plugin Directory. Rankings based on user ratings, review count, and market performance.
This is the curated shortlist — the top-ranked smtp apps. To browse every smtp app on WordPress Plugin Directory, see the full Smtp category.
This list ranks the top 10 WordPress apps classified under Smtp by the source marketplace's own taxonomy — apps appear here only because WordPress Plugin Directory itself tags them in this category, not because of any AppRanks editorial decision. Within the category set, ranking uses a Bayesian-ish blend of average rating × natural log of review count: the formula is rating × ln(reviewCount + 1), so a high-rating-low-review app doesn't leapfrog an established listing on a single 5-star outlier. The blend favors apps that are both well-reviewed AND have an established user base.
AppRanks does not invent a proprietary score for public surfaces — the rank shown mirrors the marketplace's published category position exactly, scraped on a 12-24 hour refresh cycle from the canonical WordPress Plugin Directory listing. The category lookup happens at request time and the page is cached at the edge for 1 hour to absorb traffic spikes; the underlying ranking data refreshes daily so the list stays accurate within one day of any source change. AppRanks does not editorially promote or demote apps based on advertiser or partnership status — the same blend formula applies uniformly across every app on this platform.
Contact Form & SMTP Plugin for WordPress by PirateForms
Ranks #1 in the WordPress Plugin Directory smtp category as a highly rated listing. Currently has a growing review traction (223 reviews). Position holds for the trailing 30-day window.
Pick if: Pick this if you prioritize merchant satisfaction over scale — Contact Form & SMTP Plugin for WordPress by PirateForms holds a 4.7-star average across 223 reviews in the smtp category.
Ranks #2 in the WordPress Plugin Directory smtp category as a category-leading listing. An early-stage review volume (1 reviews) with a no-rating average. Position holds for the trailing 30-day window.
Pick if: Pick this if you prioritize merchant satisfaction over scale — MultiMailer holds a 5.0-star average across 1 reviews in the smtp category.
WebKernelAI – Advanced Form Builder
Ranks #3 in the WordPress Plugin Directory smtp category as a category-leading listing. Tracks at no-rating across 1 reviews — early-stage review volume. Position holds for the trailing 30-day window.
Pick if: Pick this if you prioritize merchant satisfaction over scale — WebKernelAI – Advanced Form Builder holds a 5.0-star average across 1 reviews in the smtp category.
MailerSend – Official SMTP Integration
Holds position #4 in the WordPress Plugin Directory smtp category as a mixed-rating listing. Currently has an early-stage review volume (12 reviews). Refresh: daily from the source marketplace.
Currently sits at #5 in the WordPress Plugin Directory smtp category as a highly rated listing. A growing review traction (525 reviews) with a no-rating average. Refresh: daily from the source marketplace.
Holds position #6 in the WordPress Plugin Directory smtp category as a category-leading listing. Tracks at no-rating across 400 reviews — growing review traction. Refresh: daily from the source marketplace.
SureMail – SMTP and Email Logs Plugin with Amazon SES, Postmark, and Other Providers
Currently sits at #7 in the WordPress Plugin Directory smtp category as a category-leading listing. Currently has an early-stage review volume (23 reviews). AppRanks tracks this listing on a 24-hour cycle.
SMTP2GO for WordPress – Email Made Easy
Holds position #8 in the WordPress Plugin Directory smtp category as a category-leading listing. An early-stage review volume (66 reviews) with a no-rating average. AppRanks tracks this listing on a 24-hour cycle.
Currently sits at #9 in the WordPress Plugin Directory smtp category as a highly rated listing. Tracks at no-rating across 3 reviews — early-stage review volume. AppRanks tracks this listing on a 24-hour cycle.
WP Mail SMTP by WPForms – The Most Popular SMTP and Email Log Plugin
Holds position #10 in the WordPress Plugin Directory smtp category as a category-leading listing. Currently has an established review history (5,185 reviews). Source: WordPress Plugin Directory's own published category position.
Same data as the ranked cards, condensed into a sortable-by-eye grid: rating × review depth × pricing tier across the top 10 smtp apps on WordPress Plugin Directory.
Want to compare any two apps in detail (features, ratings trend, pricing plans side-by-side)? Open the head-to-head page from the "Compare to #N" link on each card above. Custom multi-app comparisons, historical rank trajectory, and CSV export are available on a paid plan.
Methodology details: /glossary/audit-score · /about.
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