Put email in queue and send it one by one, by limits.
More Plugins
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No Version Tags
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MouseWheel Smooth Scroll
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Jetpack Search
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Sortable Dashboard To-Do List
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Hitbox.TV Widget
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XT Points & Rewards for WooCommerce
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Doneren met Mollie
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InstaWP Connect – 1-click WP Staging & Migration
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Country & Phone Field Contact Form 7
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WC Vendors – WooCommerce Multivendor, WooCommerce Marketplace, Product Vendors
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Local Google Analytics for WordPress – caches external requests
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HelloAsso Payments for WooCommerce
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WP Editor
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pipDisqus – Lightweight Disqus Comments
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Simple Pin It Button for Pinterest
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Link Shortner
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AudioIgniter Music Player
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BCC Everything
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Progress Bar & Skill Bar
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Scratch and Win