Side-by-side comparison · 24 data points
Configure a SMTP server to send email from your WordPress site. Configure the wp_mail() function to use SMTP instead of the PHP mail() function.
| Gravity PDF | SMTP Mailer | |
|---|---|---|
| Tagline | ||
| Description | ||
| Screenshots | — | — |
| Languages | ||
| Platforms | ||
| Developer | — | — |
| Listed | — | — |
| Last updated | — | — |
Automatically generate, email and download PDF documents from Gravity Forms entries
| Metric | Gravity PDF | SMTP Mailer |
|---|---|---|
| Rating | ★ 4.9 ★ | 4.5 ★ |
| Total reviews | ★ 317 | 65 |
| Active installs | 20,000+ | 70,000+ |
| Free plan | — | — |
| Built for Shopify | — | — |
Based on the data on this page, Gravity PDF is the stronger choice for most WordPress Plugin Directory merchants — 4.9★ vs SMTP Mailer's 4.5★ is a meaningful gap that usually reflects real product or support quality differences across the user base. Gravity PDF has the larger user base (317 reviews vs 65), which usually maps to broader integration coverage, faster bug-fix cadence, and a deeper bench of community workflow patterns. SMTP Mailer's smaller cohort can be an advantage for niche workflows where the bigger app has accumulated bloat. Recommended by store size: small/early-stage merchants who need fast install and low risk should default to Gravity PDF; mid-market and enterprise merchants with specific feature requirements should evaluate both — SMTP Mailer's 65-review base may include the workflow context that matches your specific use case better than Gravity PDF's broader-but-shallower coverage. This verdict is generated from the live marketplace data on this page — rating, review count, pricing tier, and category position all refresh from the canonical WordPress Plugin Directory listing every 24 hours. AppRanks does not accept payment to influence comparison outcomes; the methodology is documented on the About page and applies identically to every pair on the site.
Read each app's audit: Gravity PDF audit • SMTP Mailer audit
| Keyword | Gravity PDF | SMTP Mailer |
|---|---|---|
| online forms | #50 | Not ranked |
| forms | #116 | Not ranked |
| online form | #242 | Not ranked |
| form builder | Not ranked | #261 |
| contact form | Not ranked | #270 |
Gravity PDF has the higher average rating (4.9★ from 317 reviews) compared to SMTP Mailer (4.5★ from 65 reviews). Both are tracked daily by AppRanks, so the figures here update each refresh cycle.
It depends on what you're optimizing for. Gravity PDF fits better if you prioritize rating consistency; SMTP Mailer is the call if you need the larger user base. Read both apps' detail pages on AppRanks for the full feature breakdown, install counts, and recent listing changes.
Both apps are one-click installs from the WordPress Plugin Directory marketplace. Gravity PDF has more onboarding documentation maturity (317 reviews vs 65), which usually translates to better-tested setup wizards and quicker time-to-value. AppRanks doesn't measure setup time directly — read the recent reviews on each app's detail page for merchant-reported install experience.
Gravity PDF typically suits early-stage and growth-mode stores based on its review-base composition (317 reviews). SMTP Mailer aligns more with early-stage and growth-mode stores (65 reviews). Larger review bases generally mean the app has been load-tested at scale — relevant if you're processing high order volume or handling enterprise compliance requirements.
Migration support varies by app and category. Gravity PDF and SMTP Mailer both publish their export options on their marketplace listing pages (or in their support docs); some apps offer one-click import from competitors, others require CSV. The fastest check: search "import from SMTP Mailer" in each app's help center. AppRanks does not track migration tooling directly — this is a category-specific capability worth verifying before commitment.
