WP Mail SMTP Pro allows you to easily set up WordPress to use a trusted provider to send emails.
Demo: https://wpmailsmtp.com
Mail Mint Is a powerhouse in itself when it comes to handling your leads for any email marketing campaign.
Demo: https://getwpfunnels.com/email-marketing-automation-mail-mint/
MailEngine has an in built detector for these words and it warns you if you use them.
Demo: https://mailengine.in
Auto Mail is an WordPress email plugin that make you can manage your customer relationships, build your email lists, send email campaigns, build funnels and make more profit and increase your conversion rates.
Make your WordPress site support temporary mailbox service (as know as disposable email, trash mail or 10 minute mail).
Demo: https://www.wpmoose.com/plugins/wp-temp-mail/
Email Verifier Pro is a professional tool that allows you to check a large list of email addresses and validate them with an easy-to-read report divided into several categories such as valid, invalid, duplicate, unknown addresses with syntax error.
Demo: https://codecanyon.net/item/email-verifier-pro-bulk-email-addresses-validation-mail-sender-email-lead-management-tool/24407503