# WP Mail SMTP by WPForms vs ZDN Whitelist Outgoing Em…

> WP Mail SMTP by WPForms vs ZDN Whitelist Outgoing Em… compared on installs, downloads, ratings, updates, compatibility and support. WP Mail SMTP by WPForms comes out ahead, winning 7 of 7 head-to-head checks against ZDN Whitelist Outgoing Email.

**WP Mail SMTP by WPForms comes out ahead, winning 7 of 7 head-to-head checks against ZDN Whitelist Outgoing Email.** Choose WP Mail SMTP by WPForms if you care most about active installs, downloads (30 days) and download trend.

| | WP Mail SMTP by WPForms – Free SMTP Plugin with Gmail, Outlook, Amazon SES, SendGrid, Mailgun, Zoho & other SMTP | ZDN Whitelist Outgoing Email |
|---|---|---|
| Active installs | 4M+ ✅ | <10 |
| Downloads (30 days) | 2.4M ✅ | 51 |
| Download trend | +292.1% ✅ | +45.7% |
| Rating | 4.8/5 | — |
| Reviews | 5,205 ✅ | 0 |
| Health score | 95/100 ✅ | 55/100 |
| Last updated | 13 hours ago ✅ | 3 months ago |
| Tested up to | WP 7.1.3 ✅ | WP 7.0.7 |
| Support resolved | 82% | — |
| Requires PHP | 7.4+ | 7.4+ |
| First released | Sep 2007 | Jul 2026 |

## Frequently asked questions

### Which is better, WP Mail SMTP by WPForms or ZDN Whitelist Outgoing Email?
WP Mail SMTP by WPForms comes out ahead, winning 7 of 7 head-to-head checks against ZDN Whitelist Outgoing Email. Choose WP Mail SMTP by WPForms if you care most about active installs, downloads (30 days) and download trend.

### Is WP Mail SMTP by WPForms more popular than ZDN Whitelist Outgoing Email?
WP Mail SMTP by WPForms is the more popular of the two with 4M+ active installs, compared with <10 for ZDN Whitelist Outgoing Email.

### Can I use WP Mail SMTP by WPForms and ZDN Whitelist Outgoing Email together?
Both plugins cover email, so most sites only need one. Running two plugins that do the same job can cause conflicts and slow your site down — pick the one that fits best and remove the other.

### Are WP Mail SMTP by WPForms and ZDN Whitelist Outgoing Email free?
Yes. Both are free to download from the official WordPress.org plugin directory. Either may also offer paid upgrades from its developer.


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Source: live WordPress.org data · HTML version: https://pageforge.pro/directory/compare/wp-mail-smtp-vs-zdn-whitelist-outgoing-email/ · Generated 2026-10-08 04:00 UTC by PageForge